Some nodal displacements must be fixed in every FE model. Why? Choose all correct responses.

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answerhappygod
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Some nodal displacements must be fixed in every FE model. Why? Choose all correct responses.

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Some nodal displacements must be fixed in every FE model. Why?Choose all correct responses.
Some Nodal Displacements Must Be Fixed In Every Fe Model Why Choose All Correct Responses 1
Some Nodal Displacements Must Be Fixed In Every Fe Model Why Choose All Correct Responses 1 (12.88 KiB) Viewed 31 times
Because without some fixed nodes, the model may undergo rigid body motion. Because without some fixed nodes, [Kglobal] would be singular. Because without some fixed nodes, it would be impossibel to solve for the unknown displacements.
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