Learning Forum

[purichmunlow]

I am performing a static analysis on a wing of an aircraft. A problem that I am encountering is the modelling of solid elements with shell elements.

[Rahul Kumbhar]

You can try different settings in 'Constraint type' in Bonded contact advanced options to check wich one gives better result. Probably 'Distributed, inside pinball egion' could work best. n

[purichmunlow]

Thank you for your suggestion! I appreciate it. I tried all the options that you suggested but still did not work out. Any other suggestions you could provide? Any other ways to model this?n

[Rahul Kumbhar]

Any reason you believe its not working? Are you just checking highest stresses in the model. There can be the other reasons for higher stress like large deflection is off, or linear material. The contact area is very close to the support. You should have very fine mesh both on solid face as well shell edge in contact.nTo check if the contact is properly working or not, you should plot the stress on the contact face. The bending stress should look symmetrical on the contact face.n

[mzhossain2001]

It is always better to apply similar dof elements at the joints. May be shell to shell or solid to solid. Other than that, If other methods are used like MPC or CE, or coupling - then you need to test your model very carefully, for ensuring the accuracy of the results. Basic FEA fundamental theories shall be applied to get the correct result. There is no shortcut to that.n