Click to the right of Create Elements: Display the Element Table
Start Node Number
Assign a number to the new starting node created together with new elements in the Model Window. This number is auto-set to the largest node number in use +1. To modify this item, click and select an option to specify a desired number.
Start Element Number
Assign a new starting element number. This number is auto-set to the largest element number in use +1. To modify this item, click and select an option to specify a desired number.
Element Type
Assign an element type and enter additional data.
Truss: Truss Element
Tension-only/Hook/Cable: Tension-only Elements
Truss
Allow. Comp : Allowable maximum compressive force
Tens. Limit : Allowable tensile force used in the process of iterative analysis
For tension-only elements, Allow Comp. is assigned 0 and Tens. Limit is checked off generally. If Tens. Limit is checked on and a specific value is entered, the element no longer resists forces exceeding the Tens.
Limit, and the excess forces will be transferred to neighboring elements.
Hook
If a displacement takes place beyond the Hook Distance, the element starts resisting tension
Cable
Enter the ratio of unstrained length of unstrained length to element length (Lu/L) and the Pretension load additionally.
"Cable Element" is auto-converted into equivalent Truss Element in the case of a linear analysis and Elastic Catenary Element in the case of a geometric nonlinear analysis.
Generate a Cable Element and introduce Tension Force at the same time.
Lu: Enter the unstrained length of Cable (Lu), which will indirectly adjust element stiffness and tension force from element length. (Lu: Unstrained length of Cable, L: Element length)
If Lu/L>1, the cable is sagging and reduced stiffness is applied. If Lu/L<1, the distance between the two nodes is longer than the unstrained length, and it has an effect of introducing a tension force.
Pretension: Enter the Pretension load to be introduced to Cable.
Horizontal: Enter the Horizontal pretension load, which will be automatically converted into the pretension load to be introduced to Cable.
Entered pretension is applied only when nonlinear analysis is performed. Unless geometric nonlinear analysis is performed, the entered pretension will be ignored. For linear analysis, pretension should be entered using Load>Prestress Loads> Pretension Loads.
Compression-only/Gap: Compression-only Elements
Compression-only Truss
Allow. Tens : Allowable maximum tensile force
Comp. Limit : Allowable compressive force used in the process of
iterative analysis
For compression-only elements, Allow Tens. is assigned 0 and Comp. Limit is checked off generally. If Comp. Limit is checked on and a specific value is entered, the element no longer resists forces exceeding the Comp. Limit, and the excess forces will be transferred to neighboring elements.
Gap
If a displacement takes place beyond the Gap Distance, the element starts resisting compression.
Note Usage tip of Tension-only/Compression-only element
General beam/Tapered Beam: Beam Element/Non-prismatic Beam Element
Plate: Plate Element
Thick: Thick plate element
Thin: Thin plate element
With Drilling DOF: To consider the degree of freedom about the perpendicular direction to the plate
Note Usage Tip of Plate Element
Plane Stress: Plane Stress Element
With Drilling DOF: To consider the degree of freedom about the perpendicular direction to the plat
Note Usage Tip of Plane Stress Element
Plane Strain: 2-D Plane Strain Element
Axisymmetric: 2-D Axisymmetric Element
Solid: 3-D Solid Element
Wall: Wall Element
Sub Type: Two types of wall elements are included in midas Gen.
Membrane: In-plane stiffness + rotational stiffness about the vertical direction. It is generally used to model shear walls being subjected to in-plane loads only.
Plate: in-plane stiffness + rotational stiffness about the vertical direction + out-of-plane bending stiffness. It is suitable for modeling common walls intended to resist in-plane loads as well as out-of-plane bending moments.
Wall Type:
Plate Base: Wall element type for elastic analysis
CRB: Wall element type for inelastic time history or pushover analysis
Wall ID: In case of Wall, the wall ID is additionally entered. Select [Auto Inc.] to increase the ID by 1, as wall elements are entered.
Node Connect: Select the boundary condition of 4 nodes in a wall element used in inelastic time history and pushover analysis.
Pin: Pin type is generally used to model shear walls being subjected to in-plane loads only.
Fixed: It is suitable for modeling common walls intended to resist in-plane loads as well as out-of-plane bending moments.
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