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Drastic Difference in Static vs. Riks analysis

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frztrb

Mechanical
Joined
Sep 29, 2010
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151
Location
IT
Hi All

in the files attached you see the results for the static and Riks analysis for a loading in the z direction =100 N , that have a drastic difference , I will have to do a buckling analysis on this model , but first for another reason I need to know that reaction results in different load cases , but for the analysis , for example for tension i tried both static general and Riks method , but the results have too much difference , as the riks stresses are so much higher than the static one , while I also don,t know that whether i should expect nonlinear behavior for this geometry , while the parts are orthotopic materil , the first one is the risk analysis with a 50 MPa result for a 100 N loading

i appreciate your attetion
 
btw btw I am doing the analysis in ABAQUS
 
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