Objects coming into contact then stuck

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Last Post 11 July 2019

abcdandy posted this 11 July 2019

I would like to model objects coming into contact then not being able to come apart, but slide relatively. Does a 'no separation' definition achieve this or does it have to be initially in contact?

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contact no-separation

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peteroznewman posted this 11 July 2019 - Last edited 11 July 2019

You might use the COMBIN40 element which has a Gap feature. A "lockup" feature may be selected with KEYOPT(1). This feature removes the gap opening capability once the gap has closed.

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jj77 posted this 11 July 2019 - Last edited 11 July 2019

No separation does this.

An example is shown below. Two blocks. One fixed and the top one falling onto it. If one has normal frictional contact then it will bounce of (see below)