Material-General

For new or additional Material, click

in the Properties dialog box and select Structure for structural material or Ground for ground material.

Poisson's ratio is used to calculate the Shear Modulus of Elasticity.
Weight Density

The dialog boxes, where material properties are defined by the user, used to be activated with default values. GTS automatically inactivates unnecessary parameters of each material model for analysis. For example, properties in the elastic model, such as cohesion and internal friction angle, which are not used for calculation, are inactivated.

Poisson's ratio is used to calculate the Shear Modulus of Elasticity
Unit Weight

<Ko-Anisotropy Property dialog box>

Relation to the Global Axes

Parallel

Unparallel

Parallel to the Global Axis

Kox

Koy

Koz

Unparallel to the Global Axis

Ko Max

Ko Min

Angle of Ko Max from Reference Axis

Reference Axis

This option defines permeability function and water content function which are used in the unsaturated seepage analysis. If no function has been defined, click

button to add a new unsaturated property function.

Note: In order to fully activate an undrained condition, this option must also be activated in "Define Construction stage." Refer to Define Construction Stage.

Select ground material model. MIDAS/GTS provides the following 13 material models. Please refer to Analysis Manual for detail information.

To modify previously entered Material data, select the Material to be modified in the list of the Material dialog box and click

to modify the related data.

To remove previously entered Material data, select the Material to be deleted in the list of the Material dialog box and click

To copy previously entered Material data, select the Material to be copied in the list of the Material dialog box and click

To import previously entered Material data from another GTB file, click

and select the GTB file containing Material data or specify a file name and then click Open button.

To modify previously entered material property numbers, Select Material numbers to be renumbered from the list in the Material dialog box and modify the related data followed by clicking

Modify a material property number. Using this option will modify the previously defined material property number. If this option is not checked, the selected material having previously defined number will become undefined and the additional user-defined material number will be created without any assigned elements.

Property: Material

Function	Define the material properties of structures and ground.

Call	Model > Property > Material

For new or additional Material, click in the Properties dialog box and select Structure for structural material or Ground for ground material. <Material> Add/Modify Structural Material <Add/Modify Structural Material> General ID Material property number. Name Material property name. Color Select the color of Material property. Material Parameter Modulus of Elasticity Enter the Modulus of Elasticity. Poisson's Ratio Poisson's ratio is used to calculate the Shear Modulus of Elasticity. Weight Density Use Weight Density to calculate self-weights and masses. Thermal Coefficient Enter Thermal Coefficient for thermal stress analysis. Add/Modify Ground Material The dialog boxes, where material properties are defined by the user, used to be activated with default values. GTS automatically inactivates unnecessary parameters of each material model for analysis. For example, properties in the elastic model, such as cohesion and internal friction angle, which are not used for calculation, are inactivated. <Add/Modify Ground Material> General ID Material property number. Name Material property name. Color Select the color of Material property. Material Parameter Modulus of Elasticity Enter the Modulus of Elasticity. Poisson's Ratio Poisson's ratio is used to calculate the Shear Modulus of Elasticity Unit Weight Enter the unit weight of ground material. Unit Weight (Saturated) Enter the unit weight of ground material after saturation. Cohesion Enter the cohesion parameter. Frictional Angle Enter the frictional angle of ground material. Initial Stress Parameter If Anisotropy is not checked Ko : Coefficient of Earth Pressure at Rest If Anisotropy is checked <Ko-Anisotropy Property dialog box> Relation to the Global Axes Parallel Unparallel Parallel to the Global Axis Kox Koy Koz Unparallel to the Global Axis Ko Max Ko Min Angle of Ko Max from Reference Axis Reference Axis Seepage Parameter Permeability Coefficient Enter Permeability Coefficient in each direction. Vol. Water Content Enter the water content in terms of volume. Unsaturated Property This option defines permeability function and water content function which are used in the unsaturated seepage analysis. If no function has been defined, click button to add a new unsaturated property function. Drainage Parameter Drained Check on to consider drained condition. Undrained Check on to consider undrained condition. Note: In order to fully activate an undrained condition, this option must also be activated in "Define Construction stage." Refer to Define Construction Stage. Skempton's B Coefficient Input parameter for Skempton's B Coefficient. Constitutive Model Select ground material model. MIDAS/GTS provides the following 13 material models. Please refer to Analysis Manual for detail information. Elastic Transversely Isotropic Tresca von Mises Drucker Prager Mohr Coulomb Hoek-Brown Hyperbolic(Duncan-Chang) Strain Softening Modified Cam Clay Jointed Rock Mass Jardine Model Modified Mohr-Coulomb To modify previously entered Material data, select the Material to be modified in the list of the Material dialog box and click to modify the related data. To remove previously entered Material data, select the Material to be deleted in the list of the Material dialog box and click. To copy previously entered Material data, select the Material to be copied in the list of the Material dialog box and click . To import previously entered Material data from another GTB file, click and select the GTB file containing Material data or specify a file name and then click Open button. <Import Material> Material List Display Material data contained in the existing *.GTB file. Selected List Select Material data to be imported and register the data in the Selected List. Numbering Type of Material Specify the Import mode for material property numbers. Keep ID Import the data keeping the same material property numbers. New ID Assign new numbers to the imported material property data. To modify previously entered material property numbers, Select Material numbers to be renumbered from the list in the Material dialog box and modify the related data followed by clicking . <Renumbering Material> Start number Assign a new starting number for Material to be modified. Increment number Enter the increment for numbering Material numbers. Change element's material number Modify a material property number. Using this option will modify the previously defined material property number. If this option is not checked, the selected material having previously defined number will become undefined and the additional user-defined material number will be created without any assigned elements.

Property: Material

Function

Call