Contact Shell and Solid

Altair Forum User

Hi,

my name is Nicola ed i've a problem with the contact between a shell and a solid . I've a load distribution on a shell and i want to transmit them on the solid (with different mesh). I've done a CONTACT FREEZE, but when i do the static analysis you can see that the shall has a bad behaviour (master is the shell and slave is the solid). I tried to increase the thickness until 1 mm; this improved behaviour of deformation but doing that we are increasing stiffness of the system and decreasing displacements.. i expect  thant the shell is completely attached to the surface of the solid so without compenetration or something..

Thank you for your help.. i need it.

Nicola
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Simon Križnik

Hi,

 

try the following suggestions:

1. In linear static analysis, the contact status does not change, does not slide and the contact stiffness is constant throughout. 

2. The coarser mesh should be the master. https://insider.altairhyperworks.com/wp-content/uploads/2015/07/T-T-1119-OptiStruct-Defining-master-and-slave-roles-for-contact-surfaces-in-a-contact-pair.pdf

3.  Surface to surface contact (S2S) should distribute the contact forces more evenly

 

Check these tutorials:

OS-1392: Node-to-Surface versus Surface-to-Surface Contact

OS-1393: Basics of Contact Properties and Debugging

 

Share the model if the issue persists.