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4 point bending modeling
Posted 6 nov. 2016, 23:29 UTC−5 Geometry, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.2 2 Replies
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I am trying to model a 4 point bending on an elliptical cylinder. I have created the model and fixed constraint the two bottom points. I want to apply two loads on specific points of the cylinder, but I don't know how. Could anyone give me some suggestions on how I could do this? Thanks
The picture attached bellow will help explain the situation a lot better.
The picture attached bellow will help explain the situation a lot better.
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2 Replies Last Post 9 nov. 2016, 14:11 UTC−5
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Posted:
8 years ago
Updated:
5 years ago
Hello Perry,
Make sure that you have set up points in the geometry at the locations where ou want to apply the two forces.
The documentation contains many resources you can draw upon to learn how to use the graphical user interface. In particular, the manuals for the Structural Mechancis Module include many tutorials - See in particular its Applications Library and Verification manual. All manuals are accessed through File > Help > Documentation.
Note that fixing two points is not sufficient to make the problem well posed: the rigid body rotation about the line connecting the two points remains unconstrained. So you'll need to reconsider the boundary conditions.
Best regards,
Jeff
Make sure that you have set up points in the geometry at the locations where ou want to apply the two forces.
The documentation contains many resources you can draw upon to learn how to use the graphical user interface. In particular, the manuals for the Structural Mechancis Module include many tutorials - See in particular its Applications Library and Verification manual. All manuals are accessed through File > Help > Documentation.
Note that fixing two points is not sufficient to make the problem well posed: the rigid body rotation about the line connecting the two points remains unconstrained. So you'll need to reconsider the boundary conditions.
Best regards,
Jeff
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Posted:
8 years ago
Note also that point supports and point loads will cause singularities, as discussed in
www.comsol.com/blogs/singularities-in-finite-element-models-dealing-with-red-spots/
Regards,
Henrik
www.comsol.com/blogs/singularities-in-finite-element-models-dealing-with-red-spots/
Regards,
Henrik