Explanation Of Thermal Strain Effects In ANSYS Mechanical
In ANSYS Mechanical analyses, you can define the behavior of the parts whether they deform or not. This adjusment is called as stiffness behavior, and it is very important like other settings for parts: thermal strain, non-linear effects… In here, we explan the stiffness behavior options in ANSYS Mechanical below.
Stiffness behavior definition in ANSYS Mechanical is very simple process. As you see above, click on the required parts from ‘Geometry’ tab in outline tree as shown by red arrow above, then select the required stiffness behavior from drop-down list beneath ‘Definition’ section as shown in red box above.
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There are three options for stiffness behavior of parts; Flexible Bodies, Rigid Bodies and Gasket Bodies. You need to select a proper one to save CPU and analyses times in ANSYS Mechanical.
Flexible Option: Flexible option for parts in ANSYS Mechanical is default option fo each parts. If the flexible option is adjusted for parts, deformation results will shown. Mesh structure also created on these parts because, CPU calculations for deformations is required.
Rigid Body Option: You can adjust your parts as rigid bodies in ANSYS Mechanical. If you are not expecting deformations from your parts in analyses, you can set these bodies as rigid bodies.
Rigid bodies are considered as single bodies which have only inertia effects. Mass moment of inertia is considered for rigid parts, but deformational characteristics are not considered from program. So, bodies that are selected as rigid in ANSYS Mechanical, will not be meshed. So, CPU and solution times will be saved with the selection of rigid bodies properly.
Gasket Bodies: As you know thati gaskets are used for tranfer forcesi stresses between machinery components, and they generally designed as thin parts. Most of materials can be gaskets. And by selecting this, you can define the parts as gaskets in ANSYS Mechanical analyses. The deformations and stresses through thicknesses of gaskets are considered from program.
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