Select Materials in the Job Preferences dialog and click the Modification button. Select the Aluminum tab to access the following parameters. 
Define the following: 
Name 
The representative name of the defined aluminum. 
Note: The material name must be assigned before the Add button is pressed. 
 
Description
The representative description of the defined aluminum. 
 
Elasticity
- Youngs modulus - the Young's modulus value for the defined aluminum. 
 
- Poisson ratio - the Poisson's ratio for the defined aluminum. 
 
- Shear modulus - the shear modulus for the defined aluminum. This recognizes the influence of shear forces on structure deformation. 
 
 
Others
- Force density (unit weight) - the density (unit weight) of the defined aluminum. 
 
- Thermal expansion coefficient - the thermal expansion coefficient for the defined aluminum. 
 
- Damping ratio - the damping ratio of the defined aluminum.