Here you enter the physical material parameters which ATHENA uses for the computations in structural analysis and building physics for the selected material.
Dialog box Physical Material Properties
db_ath_mat_sys_phys
Dialog box section Unit
Metric Activates metric units for material parameters.
British - imperial Activates British units for material parameters.
US - imperial Activates American units for material parameters.
Dialog box section Coefficients
Enter the physical material parameters in the appropriate input fields. In doing this, take note of the units located to the right of the input fields. It is not mandatory to enter all values. In the computational dialog fields ATHENA only lists the materials for which the required parameters are present.
db_ath_mat_sys_phys_omega
Omega Activates the table for (omega values) buckling values which are needed for the calculation of supports.
Table Opens up and closes the table of omega values. Click in a field of the table to activate it and to change the corresponding value.
End of program
Click OK to close the dialog box and to save the material values. Click Cancel to discard the settings. In both cases ATHENA returns to the Dialog box Material properties.
Information on density:
In the as-shipped state, a value for the density is already entered for most materials.
If several values exist for the density of a material or it cannot be unambiguously determined (density from... to...), then the mean value is used. For example, this is the case for wood, where the following factors affect the density:
