Import

Import MGT files as well as other types of files.

From the Main Menu select File > Import > Gen MGT File.

From the Main Menu select File > Import > AutoCAD DXF File.

From the Main Menu select File > Import > SAP2000(V6, V7) File.

From the Main Menu select File > Import > SAP2000(V8) File.

From the Main Menu select File > Import > STAAD2000 File.

From the Main Menu select File > Import > STAAD2002 File.

Gen MGT: Import an MGT file (text input file of midas Gen)

AUTOCAD DXF: Import an AUTOCAD DXF file.

Import DXF File dialog box

Note 1
When importing an DXF file, models can be generated by layers.

Even in case of element shape errors (e.g., overlapping nodes) during DXF file import, the import can be executed as the program is ignoring the parts with errors. In the message window, the following error messages will display. "[WARNING] Invalid Node(No.XX) is skipped!", "[WARNING] Invalid Element(No.XX) is skipped!"

Polyline cannot be imported. Split a Polyline into Lines.

Note 2

Various polyline types, such as polygon, triangle, rectangle, etc., can be imported to midas Gen as plate elements in .DXF format, where plate elements are imported as thick type (without drilling DOF)

SAP2000(V6, V7) File

Convert a fn.s2k file (SAP2000 data file) into an MGT text input file of MIDAS/Gen. The fn.s2k file is created by *.s2k Export in SAP2000.

The limitations of converting a SAP2000 file into a MIDAS/Gen data file are as follows:

SAP2000 command	Detail command	Conversion	Limitation	MIDAS/Gen function
System	DOF	O	-	*STRUCTYPE
	LENGTH, FORCE	O	-	*UNIT
	CYC	O	Converted into Static Analysis in the case of Harmonic Steady-State Analysis	-
COORDINATE	-	O	-	-
JOINT	-	O	-	*NODE
LOCAL	ANG	O	-	*LOCALAXIS
LOCAL	AXVEC, PLVEC	O	-	*LOCALAXIS
RESTRAINT	-	O	-	*CONSTRAINT
CONSTRAINT (1)	-	O	-	*RIGIDLINK
WELD	-	X	-	-
PATTERN	-	O	-	-
SPRING	-	O	-	-
MASS	-	O	-	-
MATERIAL (2)	Isotropic	O	-	*MATERIAL
	Orthotropic	O	Only one axis converted	*MATERIAL
	Anisotropic	O	Only one axis converted	*MATERIAL
FRAME SECTION (3)	Prismatic R, P, B, C, T, A, I, L, 2L Shape Section	O	-	*SECTION
	Prismatic General Section	O	-	*SECTION
	Prismatic Database Section	X	-	-
	Nonprismatic Section	O	-	*SECTION
SHELL SECTION	-	O	-	*THICKNESS
NLPROP (4)	-	O	-	SPRING ELASTICLINK
FRAME	GEN, DEL	O	-	*ELEMENT
	LOCAL, ANG, PLVEC	O	-	*ELEMENT
	IOFF, JOFF	O	-	*OFFSET
	RIGID (5)	O	Converted into 1.0 for a value other than 1.0.	*OFFSET
	IREL, JREL	O	-	*FRAME-RLS
SHELL	GEN, DEL	O	-	*ELEMENT
SHELL	PLVEC,ANG	X	-	-
PLANE	GEN, DEL	O	-	*ELEMENT
	3,4 Node element	O	-	*ELEMENT
	9 Node element	X	-	-
	MATANG	X	-	-
ASOLID	GEN, DEL	O	-	*ELEMENT
	3,4 Node element	O	-	*ELEMENT
	9 Node element	X	-	-
	MATANG, ARC	X	-	-
SOLID	GEN, DEL	O	-	*ELEMENT
	6,8 Node element	O	-	*ELEMENT
	MATANG	X	-	-
NLLINK (6)	1 Node element	O	-	*SPRING
NLLINK (6)	2 Node element	O	-	*ELASTICLINK
MATTEMP	-	X	-	-
REFTEMP	-	O	-	-
PRESTRESS	-	O	-	*PRESTRESS
LOAD	FORCE	O	-	*CONLOAD
	RESTRAINT DISPLACEMENT	O	-	*SPDISP
	SPRING DISPLACEMENT	O	MIDAS does not have a corresponding command. Converted into Specified Displacement at the closest support.	*SPDISP
	GRAVITY (Beam)	O	-	*BEAMLOAD
	GRAVITY (Shell)	O	-	*PRESSURE
	GRAVITY (Plane/Asolid/Solid)	X	-	-
	CONCENTRATED SPAN	O	-	*BEAMLOAD
	DISTRIBUTED SPAN	O	-	*BEAMLOAD
	PRESTRESS	O	-	*PRESTRESS
	UNIFORM	O	-	*PRESSURE
	SURFACE PRESSURE	O	-	*PRESSURE
	PORE PRESSURE	X	-	-
	TEMPERATURE	O	-	ELTEMPER THERGRAD
	ROTATE	X	-	-
PDFORCE	-	O	-	*INIFORCE
PDELTA	-	O	-	*PDEL-CTRL
MODES	N,CUT,TOL	O	-	*EIGEN-CTRL
	RITZ	O	-	*EIGEN-CTRL
	SHIFT	X	-	-
	ACC, LOAD, NCYC, NLLINK	X	-	-
FUNCTION	The file being used by FUNCTION must be in the same folder containging *.s2k.	O	If a file is used for FUNCTION, the file must be in the same folder, which contains *.2k.	SFUNCTION TFUNCTION
SPEC	NAME, ANG, DAMP, F1, F2, DIRF,MODC (CQC,SRSS,ABS)	O	-	*SPLDCASE
SPEC	MODC (GMC)	X	-	-
HISTORY	Linear Transient/ Periodic Analysis	O	-	*THLDCASE
	Nonlinear Transient Analysis	X	-	-
	Acceleration Data	O	-	*GROUND-ACC
	Load Data (7)	O	-	*DYN-SLOAD
LANE	-	O	-	*LINELANE
VEHICLE	DB Vehicle (8)	O	-	*VEHICLE
VEHICLE	User Define Vehicle	X	Converted into DB24 vehicle load & a warning issued.	*VEHICLE
VEHICLE CLASS	-	O	-	*VCLASS
BRIDGE RESPONSE	-	X	-	-
MOVING LOAD	NAME, RF, CLASS, LANE, LMIN, LMAX, SF	O	-	*MVLDCASE
	CALC	O	-	*MOVE-CTRL
	TOL, SET	X	-	-
COMBO	-	O	-	*LOADCOMB
Output	-	X	-
END	-	X	-

Notes

1. CONSTRAINT

☐ Constraint of DIAPH, PLATE, ROD or BEAM Type having Auto Axis is converted into Global Z Axis.

☐ The node closest to the center of the constrained nodes defined in SAP2000 is converted into the Master Node in MIDAS.

☐ EQUAL and LOCAL are converted into the Rigid Link of MIDAS, and a warning message is generated.

2. MATERIAL

☐ SAP2000 uses Weight Density and Mass Density. If Mass Density exists in the absence of Weight Density, the Mass Density is converted into Weight Density (Weight Density = Mass Density * Gravitational acceleration).

☐ When Mass Density exists, the form of Converting Type of Model Weights to Masses of Structure Type in MIDAS is transformed into Convert to X,Y,Z.

3. FRAME SECTION

☐ MPL (Mass Per Length) assigned to Frame Element is converted into Nodal Mass at each end of the element.

☐ WPL (Weight Per Length) assigned to Frame Element is converted into Beam Load. The Beam Load is included in the load case containing Gravity Load.

4. NLPROP

☐ Elements pertaining to NLLINK are converted into Elastic Link in MIDAS. Only the linear stiffness of NLPROP is retained.

☐ If both KE and K exist, KE is converted into the stiffness of Elastic Link.

☐ If K alone exists in the absence of KE, K is converted into the stiffness of Elastic Link.

☐ If neither KE nor K exists, 0 is assigned to the stiffness of Elastic Link.

5. RIGID

☐ RIGID in SAP2000 represents the Factor of Rigidity in the Offset part defined in Frame. 1 and 0 signify Fully Rigid and Fully Flexible respectively. MIDAS permits only the Fully Rigid case.

6. NLLINK

☐ 1-node NLLINK is converted into Spring support and 2-node NLLINK is converted into Elastic link.

7. Load Data

☐ Dynamic Nodal Load in MIDAS is defined by applying loads at specific nodes, whereas Static Load Case is assigned in SAP2000 for such loads. If nodal loads exist in Static Load Case, Load Function is assigned to the corresponding nodes. If no such nodal loads exist in Static Load Case, no conversion is carried out and a warning message is generated.

8. Vehicle loads

☐ Convertible Vehicle loads: COOPERE80, P5, P7, P9, P11, P13, AML

☐ Vehicle loads not converted: HL-93M, HL-93K, HL-93S, RL, HN-44, HSN-44, HN-44L, HSN-44L

☐ Converted into DB24 Load and a warning message is generated.

SAP2000(V8) File

**Target File: Unmodified *.s2k file created by Export in SAP2000(V8) can be converted.

Contents	Table	Conversion	MIDAS	Remarks
Joint	Summary - Joint Assignments	O	-
	Joint Coordinates	O	*NODE
	Joint Restraint Assignments	O	*CONSTRAINT
	Joint Local Axes Assignments 1 - Typical	O	*LOCALAXIS
	Joint Local Axes Assignments 2 - Advanced	O	*LOCALAXIS
	Joint Pattern Assignments(1)	O	-
	Joint Pattern Definitions(1)	O	-
	Joint Spring Assignments 1 - Uncoupled	O	*SPRING
	Joint Spring Assignments 2 - Coupled	O	GSPRING GSPRTYPE
	Joint Panel Zone Assignments	X	- N/A
Frame	Summary - Frame Assignments	O
	Connectivity - Frame/Cable	O	*ELEMENT
	Frame Cable Assignments	X
	Frame Design Procedures	X
	Frame Insertion Point Assignments	O	*SECTION
	Frame Local Axes Assignments 1 - Typical	O	*ELEMENT
	Frame Local Axes Assignments 2 - Advanced	O	*ELEMENT
	Frame Material Temperatures	X	- N/A
	Frame NL Hinge Assignments	X
	Frame Offset Along Length Assignments(2)	O	*OFFSET
	Frame Output Station Assignments	X	- N/A
	Frame P-Delta Force Assignments	O	*INIFORCE
	Frame Prestress 1 - Patterns	O	*PRESTRESS
	Frame Prestress 2 - Load Multipliers	O	*PRESTRESS
	Frame Property Modifiers	O	*SECT-SCALE
	Frame Reference Temperatures	O	*ELTEMPER
	Frame Release Assignments 1 - General(3)	O	*FRAME-RLS
	Frame Release Assignments 2 - Partial Fixity(3)		*FRAME-RLS
	Frame Spring Assignments(4)		*SPRING
	Frame Auto Subdivision Assignments	X	- N/A
	Frame Tension And Compression Limits	X	-
Area	Summary - Area Assignments	O
	Connectivity - Area(5)	O	*ELEMENT
	Area Auto Mesh Assignments	X	- N/A
	Area Local Axes Assignments 1 - Typical(6)	X	- Undefined
	Area Local Axes Assignments 2 - Advanced(6)	X	- Undefined
	Area Material Temperatures	X	- N/A
	Area Reference Temperatures	O	*ELTEMPER
	Area Spring Assignments(5)		*SPRING
Solid	Summary - Solid Assignments	O	-
	Connectivity - Solid	O	*ELEMENT
	Solid Local Axes Assignments 1 - Typical(6)	X	- Undefined
	Solid Local Axes Assignments 2 - Advanced(6)	X	- Undefined
	Solid Material Temperatures	X	- N/A
	Solid Property Assignments	X	- N/A
	Solid Property Definitions	X	- N/A
	Solid Reference Temperatures	O	*ELTEMPER
	Solid Spring Assignments(4)	X	- Undefined
	Solid Auto Mesh Assignments	X	- N/A
Link	Summary - Link Assignments	O	-
	Connectivity - Link	O	ELASTICLINK, NL-LINK
	Link Local Axes Assignments 1 - Typical	O	ELASTICLINK, NL-LINK
	Link Local Axes Assignments 2 - Advanced	O	ELASTICLINK, NL-LINK
	Link Property Definitions 01 - General	O	*NL-PROP
	Link Property Definitions 02 - Linear	O	*NL-PROP
	Link Property Definitions 03 - MultiLinear	X	- N/A
	Link Property Definitions 04 - Damper	O	*NL-PROP
	Link Property Definitions 05 - Gap	O	*NL-PROP
	Link Property Definitions 06 - Hook	O	*NL-PROP
	Link Property Definitions 07 - Rubber Isolator	O	*NL-PROP
	Link Property Definitions 08 - Sliding Isolator	O	*NL-PROP
	Link Property Definitions 09 - Plastic (Wen)	O	*NL-PROP
	Link Property Definitions 10 - Plastic (Kinematic)	X	- N/A
	Link Property Assignments	O	*NL-PROP
	Program Control	O	*UNIT
MATERIAL	Material Properties 1 - General	O	*MATERIAL
	Material Properties 2 - Advanced		*MATERIAL	- anisotropic
	Material Properties 3 - Design Steel	X	-
	Material Properties 4 - Design Concrete	X	-
	Material Properties 5 - Design Aluminum	X
	Material Properties 6 - Design ColdFormed	X
SECTION	Frame Section Assignments	O	*SECTION
	Frame Section Properties 1 - General	O	SECTION SECT-SCALE
	Frame Section Properties 2 - Concrete Column	X
	Frame Section Properties 3 - Concrete Beam	X
	Frame Section Properties 4 - Auto Select	X
	Frame Section Properties 5 - Nonprismatic		*SECTION	- sect. scale
Thickness	Area Section Properties	O	*THICKNESS
Thickness	Area Stiffness Modifiers	O	- N/A
Static Load Case	Joint Loads - Force	O	*CONLOAD
	Joint Loads - Ground Displacement	O	*SPDISP
	Frame Loads - Distributed	O	*BEAMLOAD
	Frame Loads - Gravity(7)	O	*BEAMLOAD	- SelfModifier
	Frame Loads - Point	O	*BEAMLOAD
	Frame Loads - Temperature(8)	O	ELTEMPER THERGRAD *NDTEMPER	- Joint Pattern
	Area Loads - Gravity(7)	O	*PRESSURE	- SelfModifier
	Area Loads - Pore Pressure	X	- N/A
	Area Loads - Rotate	X	- N/A
	Area Loads - Surface Pressure	O	*PRESSURE
	Area Loads - Temperature(8)	O	ELTEMPER,THERGRAD
	Area Loads - Uniform To Frame	X	- Lack of data	- FLOADTYPE - FLOORLOAD
	Area Loads - Uniform	O	*PRESSURE	- Joint Pattern
	Area Loads - Wind Pressure Coefficients	X	- Undefined
	Solid Loads - Gravity(7)	X	- Undefined	- SelfModifier
	Solid Loads - Pore Pressure	X	- N/A
	Solid Loads - Surface Pressure	X	- Undefined
	Solid Loads - Temperature(8)	O	ELTEMPER THERGRAD
	Link Loads - Gravity(7)	X	- N/A
	Case - Static 1 - Load Assignments	O	*STLDCASE
	Load Case Definitions	O	*STLDCASE
LOAD	Bridge Loads 1 - Lane Definitions	O	*LINELANE	- Both - Independent
	Bridge Loads 2 - Standard Vehicles	O	*VEHICLE
	Bridge Loads 3 - General Vehicles 1	O	*VEHICLE
	Bridge Loads 4 - General Vehicles 2	O	*VEHICLE
	Bridge Loads 5 - Vehicle Classes	O	*VCLASS
	Bridge Loads 6 - Bridge Response	O	*VEHICLE
	Case - Moving Load 1 - Lane Assignments	O	*MVLDCASE
	Case - Moving Load 2 - Lanes Loaded	O	*MVLDCASE
	Case - Moving Load 3 - MultiLane Factors	O	*MVLDCASE-
	Combination Definitions	O	*LOADCOMB
Eigen Value Problem	Masses 1 - Mass Source	O	*LOADTOMASS
	Masses 2 - Assembled Joint Masses	X	- Generated after analysis
	Joint Added Mass Assignments	O	*NODALMASS
	Frame Added Mass Assignments(9)		*NODALMASS
	Area Added Mass Assignments(9)		*NODALMASS
	Case - Modal 1 - General	O	*EIGEN-CTRL
	Case - Modal 2 - Load Assignments - Eigen	X	- N/A
	Case - Modal 3 - Load Assignments - Ritz	O	*EIGEN-CTRL
Response Spectrum Analysis	Function - Response Spectrum - BOCA96	X	- N/A
	Function - Response Spectrum - EuroCode8	O	*SFUNCTION
	Function - Response Spectrum - From File	X	- N/A
	Function - Response Spectrum - IBC2000	O	*SFUNCTION
	Function - Response Spectrum - NBCC95	O	*SFUNCTION
	Function - Response Spectrum - NEHRP97	X	- N/A
	Function - Response Spectrum - NZS4203	X	- N/A
	Function - Response Spectrum - UBC94	O	*SFUNCTION
	Function - Response Spectrum - UBC97	O	*SFUNCTION
	Function - Response Spectrum - User	O	*SFUNCTION
	Case - Response spectrum 1 - General(10)	O	SPEC-CTRL SPLDCASE
	Case - Response spectrum 2 - Load Assignments(10)	O	*SPLDCASE
	Case - Response spectrum 3 - Interpolated Damping	X	- N/A
	Case - Response spectrum 4 - Proportional Damping	X	- N/A
	Case - Response spectrum 5 - Damping Overrides	X	- N/A
Analysis	Analysis Case Definitions	O	*ANAL-CTRL
	Active Degrees of Freedom	O	*STRUCTYPE
	Case - Static 2 - Nonlinear Load Application	X
	Case - Static 3 - Nonlinear Stage Information	X	- Lack of data	*STAGE
	Case - Static 4 - Nonlinear Parameters	X	- Lack of data	STAGE NONL-CTRL
	Case - Direct History 1 - General(11)	O	*THLDCASE
	Case - Direct History 2 - Load Assignments	O	GROUND-ACC DYN-SLOAD
	Case - Direct History 3 - Proportional Damping	O	*THLDCASE
	Case - Direct History 4 - Integration Parameters	X	- N/A
	Case - Direct History 5 - Nonlinear Parameters	O	*THLDCASE
	Case - Modal History 1 - General	O	*THLDCASE
	Case - Modal History 2 - Load Assignments	O	GROUND-ACC DYN-SLOAD
	Case - Modal History 3 - Interpolated Damping	X	- N/A
	Case - Modal History 4 - Proportional Damping	O	*THLDCASE
	Case - Modal History 5 - Damping Overrides	O	*THLDCASE
	Case - Modal History 6 - Nonlinear Parameters	O	*THLDCASE
	Case - Buckling 1 - General(12)	O	*BUCK-CTRL
	Case - Buckling 2 - Load Assignments	O	*BUCK-CTRL
	Case - Steady State 1 - General	X
	Case - Steady State 2 - Load Assignments	X
Rigid Link	Joint Constraint Assignments(13)	O	*RIGIDLINK
	Constraint Definitions - Beam		*RIGIDLINK	- Auto Axes
	Constraint Definitions - Body	O	*RIGIDLINK
	Constraint Definitions - Diaphragm		*RIGIDLINK	- Auto Axes
	Constraint Definitions - Equal	O	*RIGIDLINK
	Constraint Definitions - Line	O	*RIGIDLINK
	Constraint Definitions - Local	X	- N/A
	Constraint Definitions - Plate		*RIGIDLINK	- Auto Axes
	Constraint Definitions - Rod		*RIGIDLINK	- Auto Axes
	Constraint Definitions - Weld	O	*RIGIDLINK
Lateral Load (Wind)	Auto Wind - ASCE7-88	X	- N/A
	Auto Wind - ASCE7-95	X	- N/A
	Auto Wind - ASCE7-98	O	*WIND
	Auto Wind - BOCA96	X	- N/A
	Auto Wind - BS6399-95	X	- Lack of data
	Auto Wind - NBCC95	O	*WIND
	Auto Wind - UBC94	X	- N/A
	Auto Wind - UBC97	O	*WIND
	Auto Wind - User	X	- N/A
	Auto Wind Exposure For Horizontal Diaphragms	X	- N/A
	Auto Wind Loads To Groups	X	- N/A
	Auto Wind Loads To Horizontal Diaphragms	X	- N/A
	Auto Wind Loads To Joints	X	- N/A
Lateral Load (Seismic)	Auto Seismic - BOCA96	X	- N/A
	Auto Seismic - IBC2000	X	- Lack of data	- Seismic Group
	Auto Seismic - NBCC95	O	*SEIS
	Auto Seismic - NEHRP97	X	- N/A
	Auto Seismic - UBC94	X	- N/A
	Auto Seismic - UBC97	O	*SEIS
	Auto Seismic - UBC97 Isolated	X	- N/A
	Auto Seismic - User Coefficient	X	- N/A
	Auto Seismic - User Loads	X	- N/A
	Auto Seismic Eccentricity Overrides	X	- N/A
	Auto Seismic Loads To Groups	X	- N/A
	Auto Seismic Loads To Horizontal Diaphragms	X	- N/A
	Auto Seismic Loads To Joints	X	- N/A
Time History Functions	Function - Time History - Cosine	X	- N/A
	Function - Time History - From File	O	*TFUNCTION
	Function - Time History - Ramp	X	- N/A
	Function - Time History - Sawtooth	X	- N/A
	Function - Time History - Sine	X	- N/A
	Function - Time History - Triangular	X	- N/A
	Function - Time History - User	O	*TFUNCTION
	Function - Time History - User Periodic	X	- N/A
COMBO	Groups 1 - Definitions	X
Output	Groups 2 - Assignments	X	- Lack of data	GROUP BNDR-GROUP
END	Groups 3 - Masses and Weights	X

Notes

Commentary

1. Joint Pattern

☐ For the present, it is applied to Element Temperature Load, Temperature Gradient and Area Surface Load.

2. Beam End Offset

☐ No Rigid Factor function

Note
Converted into Fully Rigid Offset

3. Beam End Release

☐ SAP inputs Partial Fixity as Stiffness whereas MIDAS inputs it as Proportion in the case of Frame Release.

Note
Converted into Full Fixity

4. Element Spring

☐ Frame Spring Assignment: Converted into Node Spring

☐ Area Spring Assignment: Converted into Node Spring (only in the case of face#5 and #6 (∵local axes))

☐ Solid Spring Assignment: Not converted since local axes are not defined

5. Area element

SAP2000(V8)			MIDAS/Gen		Remark
Section-Type	sub-type		Element	type
Shell	Shell	Thick	Plate(5-1)	Thick
		Thin		Thin
	Membrane		Plane Stress(5-2)
	Plate	Thick	Plate	Thick	Consistent Element Properties
		Thin		Thin
Plane	Stress		Plane	Stress	Consistent Element Properties
	Strain			Strain
Asolid			Axisymmetric solid		Consistent Element Properties

5-1. In SAP 2000, Shell-Shell Element is the combination of Shell-Membrane Element and Shell-Plate Element, and the element has both translational and rotational degrees of freedom in ECS (element coordinate system) x, y, and z directions. In MIDAS/Gen, however, since there is no corresponding element to Shell-Shell Element of SAP 2000, it is converted into Plate Element.

5-2. In SAP 2000, Shell-Membrane Element has translational degrees of freedom in two in-plane directions and a rotational degree of freedom (drilling moment) perpendicular to the plane. As the counterpart of MIDAS/Gen, Wall-Membrane Element may be used. But it has a limitation in that the nodes of Wall-Membrane Element have to be connected counterclockwise starting from the bottom left and the element must be parallel to the Global Z-axis. Due to the limitations, the Shell-Membrane Element of SAP2000 is replaced with the Plane-Stress Element of MIDAS, which has only translational degrees of freedom in two in-plane directions.

6. Local Axes

☐ Area Local Axes: SAP - default: Identical to GLOBAL Axes

MIDAS - default: Local Axes are defined by the sequence of nodes.

SAP2000 (default:GLOBAL)

MIDAS/Gen

Ex(1)

Ex(2)

7. Gravity Load

☐ Frame: Converted into Element Beam Load (*if self modifier > 0, self weight is applied)

☐ Area: Converted into Pressure Load (in the direction of Global Axes of face#5, #6 since local axes are not defined)

☐ Solid: Not converted since local axes are not defined

8. Temperature Load

☐ Frame Temperature Load

☐ It is converted into Nodal Temperature if Joint Pattern exists. The average of Joint Pattern is converted into Element Temperature Load.

☐ Frame Temperature Gradient

☐ Neglect Pattern if Joint Pattern exists.

☐ Area Temperature load

☐ It is converted into Nodal Temperature if Joint Pattern exists. The average of Joint Pattern is converted into Element Temperature Load.

☐ Area Temperature Gradient

☐ Neglect Pattern if Joint Pattern exists.

☐ Solid Temperature Load

☐ It is converted into Nodal Temperature if Joint Pattern exists. The average of Joint Pattern is converted into Element Temperature Load.

9. Added Mass

☐ Frame Added Mass -> Converted into Nodal Mass

☐ Area Added Mass -> Converted into Nodal Mass

10. Response Spectrum Analysis Control

☐ It is possible to assign Analysis Control for every Response Spectrum Load Case in SAP, but in MIDAS only one Analysis Control can be assigned. So only the first Analysis Control is converted.

11. Time History Load Case

☐ Among Direct Integration Analysis Method, only Newmark method's parameter can be converted.

12- Buckling Analysis Control

☐ It is possible to assign Buckling Analysis Control for every load case in SAP, but in MIDAS only one Analysis Control can be assigned. So only the first Analysis Control can be converted.

☐ It is converted only when Load Type is "Load Case" in SAP.

13. Rigid Link

☐ Master node is assigned to the first Slave node.

☐ In the case of Diaphragm and Plate, node (center of mass) to which mass is added is assigned as Master node.

☐ Beam, Diaphragm, Plate and Rod: They are not converted after processing Auto Axis Message.

14. Miscellaneous

- Section Offset and Beam End Offset cannot be taken into account simultaneously.

Global Type and Element Type of Beam End Offset cannot be taken into account simultaneously.

- Frame Auto Subdivision

☐ Not converted

- Area Auto Mesh

☐ Not converted

STAAD2000/2002 File

Checklist

1. Target files to be converted (*.std) are restricted to the files, which were opened from and saved in the STAAD program.

2. Abbreviated commands are not supported (ex. SECTION => SEC: not supported; abbreviated commands not to be used in carrying out No. 1).

3. The conversion in the current version is limited to the data related to static analysis.

STAAD command	Detail command	Conversion	Limitation	MIDAS/Gen function
Unit	-	O	- Converted into Neutral Unit System (Newton, Meter)	*UNIT
Joint Coordinate	JOINT COORDINATE	O	-	*NODE
	JOINT COORDINATE CYLINDRICAL Or CYLINDRICAL REVERSE	X	- To be upgraded in a Future Version
	REPEAT	O	-
	REPEAT ALL	O	-
Member Incidence	MEMBER INCIDENCE	O	- If SHELL and SOLID have the same ID, it prints out a warning message, reassigns IDs to them and then converts them.	*ELEMENT ( Beam, Truss )
	REPEAT	O
	REPEAT ALL	O
Element Incidence (Shell)	ELEMENT INCIDENCE (SHELL)	O	- If MEMBER and SOLID have the same ID, it prints out a warning message, reassigns IDs to them and converts them.	*ELEMENT ( Plate, Plane Stress)
	REPEAT	O
	REPEAT ALL	O
Element Incidence Solid	ELEMENT INCIDENCE SOLID	O	- If MEMBER and SHELL have the same ID, it prints out a warning message, reassigns IDs to them and then converts them.	*ELEMENT ( Solid )
	REPEAT	O
	REPEAT ALL	O
Element Mesh Generation	-	X	-	-
Redefined of Joint and Member Numbers	-	X	-	-
Groups	GEOMETRY	O	- Nodes and Elements with corresponding IDs Convert into the MIDAS GROUP Command	*GROUP
	JOINT	O	-
	MEMBER	O	-
	ELEMENT	O	-
	SOLID	O	-
Rotate of Structure Geometry	-	X	-	-
Inactive/Delete Specification	-	X	-	-
Start User Table	External File Name	X	- User Section Table using files is not converted.	-
	TYPE	O	-	*SECTION
	NAME	O	-
	PROPERTY	O	-
Member Properties	DB Section		- Only AISC DB can be converted	-
	PRISMATIC	O	- Converted into Value Type if Property (AX, AY, AZ, IX, IY, and IZ) is present. - Trapezoidal Shape is converted into Rectangular Shape.	*SECTION
	TAPERED	O	-
	UPTABLE	O	- User Table input using files is not converted
	ASSIGN	X	- Cannot convert into a command that automatically assigns sections after analysis and design. - Arbitrary IDs are assigned to corresponding elements after printing out a warning message (assign #1)	-
Element Properties	-	O	- Only f1 is converted. - A warning message is printed out if f2f4 (Thickness at other nodes of the element) exist.	*THICKNESS
Define Material	E, G, POISSON, DENSITY, ALPHA	O	- Only Material used in CONSTANT Command is converted. Converted after arbitrary Material Name and IDs are assigned.	*MATERIAL
Define Material	DAMPING,CDAMP	X	-	*MATERIAL
Constant	E, G, POISSON, DENSITY, ALPHA	O	- Only Material used in CONSTANT Command is converted. Converted after arbitrary Material Name and IDs are assigned. Converted into values if CONCRETE, STEEL and ALUMINUM are used.	*MATERIAL
	CDAMP	X	-
	BETA, REF, REFJT	O	-
Member Truss	-	O	-	*ELEMENT
Member Cable	-	O	-	*ELEMENT
Member Tension	-	O	-	*ELEMENT
Member Compression	-	O	-	*ELEMENT
Element Plane Stress(1)	-	O	- ELEMENT TYPE is assigned as Plane Stress.	*ELEMENT
Element Ignore (Inplane Rotation)(1)	-	O	-	*ELEMENT
Support	INCLINED	X	- To be upgraded	-
	FOOTING	X	-	-
	ELASTIC MAT	X	-	-
	FX, FY, FZ, MX, FY, MZ	O	-	*CONSTRAINT
	KFX, KFY, KFZ, KMX, KMY, KMZ	O	-	*SPRING
Member Offsets	LOCAL	X	-	-
Member Offsets	GLOBAL	O	Converted into DB24 vehicle load & a warning issued.	*OFFSET
Member Release	Partial Moment Release	X	-	-
Member Release	Release other than Partial Moment	O	-	*FRAME-RLS
Master / Slave	-	O	- Not converted when slave nodes are assigned using XRANGE, YRANGE and ZRANGE (to be upgraded)	*RIGIDLINK
Loading	-	O	- MIDAS uses Name for defining load cases. LDC Load Case Numbers define the names of converted load cases.	*STLDCASE
Joint Load	-	O	-	*CONLOAD
Member Load	UNI or UMOM	O	- f4 value (Perpendicular distance from the member shear center to the plane of loading) is not converted. - Loads input in X, Y and Z Axes (Local Axes) are converted into Loads in the Global Axes.	*BEAMLOAD
	CON or CMOM	O		*BEAMLOAD
	LIN	O		*BEAMLOAD
	TRAP	O		*BEAMLOAD
Element Load	PRESSURE	O	- Element Concentrated Load prepared with the input of only x1 and y1 is not converted. - Loads applied to certain points of element with the input of x1, y1, x2 and y2 are not converted.	*PRESSURE
Element Load	TRAP	O	-	*PRESSURE
Area Load	-	X	-	-
Floor Load	-	X	-	-
Prestress Load	PRESTRESS	O	-	*PRESTRESS
Prestress Load	POSTSTRESS	O	-	*PRESTRESS
Fixed End Load	-	X	-	-
Support Displacement	-	O	-	*SPDISP
TEMPERAURE LOAD	-	X	-
SELFWEIGHT	-	O	-	*SELFWEIGHT
SPECTRUM	-	X	- To be upgraded
TIME LOAD	-	X	- To be upgraded
REPEAT LOAD	-	X
LOAD GENERATION	-	X
UBC LOAD	-	X
WIND LOAD	-	X
CALCULATE NATURAL	-	X	- To be upgraded
MODAL	-	X	- To be upgraded
LOAD COMBINATION	Linear Combination	O	-	*LOADCOMB
LOAD COMBINATION	SRSS	O	- If LOAD CASE Number is a negative number, SRSS and Linear Combination coexist. In such a case, SRSS Combination and Linear Combination are created as separate LOAD COMBINATIONs (LCBSRSS and LCBADD) respectively, and then they become Sub Combinations of a NEW COMBINATION.	*LOADCOMB

Notes

Commentary

1. Shell element

STAAD2000/2002		MIDAS/Gen		Remark
Element	type	Element	type	Remark
Shell	Default	Plate(1-1)	Thick
	Plane Stress	Plane Stress		Consistent Element Properties
	IGNORE (INPLANE ROTATION)	Plate	Thick	Consistent Element Properties

1-1. In STAAD 2000, Shell Element has both translational and rotational degrees of freedom in ECS (Element Coordinate System) x, y and z directions. In MIDAS/Gen, however, since there is no corresponding element to Shell Element of STAAD 2000, Plate Element is used instead.