0 votes
in Mechanical by jeremy Guru (380 points)
I have performed a mechanical analysis and the stresses I get are all painted blue except one node which is red.

What am I doing wrong?
by
there is nothing wrong in that.

its a stress singularity where stresses are “theoretically infinite" and its based on analysis inputs which is due to Point load or Boundary condition applied to a point or Sharp “inside” corner or Contact on a corner etc.

2 Answers

0 votes
by jeremy Guru (380 points)
edited by jeremy

Do you mean something like this?

It usually means that you have hit a singularity. One (or a few) node(s) has (have) an artificial stress due to some unusual condition (in this case is the way that displacement boundary conditions were set) so the automatic scale adjusts to show this very big values rendering most of the other nodes like zero.

To see something useful, change the scale until the colors make sense. And even better, avoid singularities: https://nickjstevens.netlify.com/post/2019/stress-singularities/

0 votes
by

there is nothing wrong in that.

its a stress singularity where stresses are “theoretically infinite" and its based on analysis inputs which is due to Point load or Boundary condition applied to a point or Sharp “inside” corner or Contact on a corner etc.

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