How ANSYS gets temperature dependent material properties that are define in engineering data? For example Young’s Modulus specified at 23 C and 100 C based on experimental data, and static analysis is performed at 0 C, 23 C, 85 C and 200 C to understand the behavior at different temperatures, then how the values are calculated in ANSYS?
January 25, 2023 at 7:34 amFAQParticipant
For the scenario as described of having the Young’s Modulus property defined at 23 and 100 degrees, following are the values used at different temperature: Element temperature Analysis will use property evaluated at 23 C as it is minimum temperature; 100 C as it is maximum temperature Linear interpolation is used to solve for the elastic modulus at 85 C: (85-23) (EX85-EX23) ———- = ——————– (100-23) (EX100-EX23) All properties are evaluated at the integration points. If the temperature of the centroid or integration point falls below or rises above the defined temperature range of tabular data, ANSYS assumes the defined extreme minimum or maximum value, respectively, for the material property outside the defined range. One should compare values at the integration points by issuing ERESX,NO to copy the integration point values to the nodes.
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