Home / What Femtet Can Do / Details of Analysis Functions / Tips on Thermal-Stress Analysis

Tips on Thermal-Stress Analysis

There are 4 types of thermal-stress analysis available in Femtet. Please select the right one which suits your requirement.

Select the analysis type on the Step/Thermal Load tab and Step/Thermal Load (Thermal-Stress Coupled) tab.

Analysis Type	Applicable Case	Solver	Example	Notes
Thermal Load	Model temperature changes from the even reference temperature (non-stress) to the reached temperature evenly.	Stress Analysis	Example 1 Example 2
Multi-Step Thermal Load Analysis	Model temperature changes from the even reference temperature (non-stress) to the multiple reached temperatures evenly in steps.	Stress Analysis	Example 1 Example 2 Example 3 Example 4	Analysis is divided into substeps. Birth/death is applicable where bodies are newly added or removed during the analysis.
Thermal-Coupled Steps	Model temperature changes from the even reference temperature (non-stress) to the distributed reached temperature.	Thermal Analysis Stress Analysis (Coupled Analysis)	Example	The temperature distribution acquired through the thermal analysis is used as the reached temperature for the stress analysis.
Multi-Step Thermal Load + Thermal-Coupled Steps	Model temperature changes from the even reference temperature (non-stress) to the multiple reached temperatures evenly in steps, and further changes to the distributed reached temperature.	Thermal Analysis Stress Analysis (Coupled Analysis)	Example 1	Multi-step thermal load analysis and thermal coupled step analysis are combined.

Refer to Stress-Static Analysis of the Technical Notes for the details of thermal load analysis and multi-step thermal load analysis.

Other Settings

By setting the reference temperature and the reached temperature to each body attribute, you can analyze each body whose temperature changes individually from the even reference temperature to the even reached temperature.

Also, by setting as in How to Set Distributed Boundary Condition and Body Attribute, temperature change from distributed reference temperature (non-stress) to distributed reached temperature can be analyzed without thermal coupled analysis.