Special Topics: Temperature Dependence

Description

Material properties including modulus of elasticity, thermal expansion coefficient, etc., can vary as a function of temperature by associating them with Factor vs Temperature tables in Common Properties: Tables. The temperature profile that is used to evaluate temperature dependent material properties can be described by a single load case or by combining temperature profiles from all active load cases.

For Nonlinear Static solver

Temperature distribution is calculated by combining temperature values from all included load cases using the factors from the load table.
Quasi-static and Nonlinear Transient Dynamic solvers

Temperature distribution is calculated by combining temperature values from all included load cases using the factors from the load table. Alternatively, it can be determined by a transient heat analysis by selecting the transient heat solution file under SOLVERS Home: Temperature.
For all other solvers

Temperature distribution is defined by the nodal temperature attributes specified in a selected load case.

For an analysis based on initial solutions or the mode superposition technique, the temperature case is implicitly defined by the initial solution and will be automatically applied.

The first group of analyses includes linear buckling and natural frequency with initial conditions. If the temperature case has been selected in the previous analysis, it cannot be changed for the present analysis.

The second group of analyses includes harmonic response, spectral response and linear transient dynamic (mode superposition) where the temperature case has been implicitly selected in the natural frequency analysis.

The following table summarises the options to include temperature dependence in different solver.

Solvers	Material Temperature Dependence
Linear Static	Case selectable.
Linear Buckling	Depends on the case used in the Initial Conditions solution.
Load Influence	Case selectable.
Nonlinear Static	Combined case.
Quasi-static	Combined case or results in a transient heat analysis file.
Natural Frequency	Case selectable if no Initial Conditions are used, otherwise, the case used in the Initial Conditions solution.
Harmonic Response	Depends on case used in the Natural Frequency solution.
Spectral Response	Depends on case used in the Natural Frequency solution.
Linear Transient Dynamic - Mode Superposition	Depends on case used in the Natural Frequency solution.
Linear Transient Dynamic - Full System	Case selectable.
Nonlinear Transient Dynamic	Combined case or results in a transient heat analysis file.
Steady Heat	Included if Nonlinear Analysis is set.
Transient Heat	Included if Nonlinear Analysis is set.