https://forums.autodesk.com/t5/fusion-support-forum/simulation-solve-doesn-t-work-consistently-for-identical-parts/m-p/12460714#M23680 <P>I have a static stress simulation for a body, let's call it Body A, that's a few basic tubes joined together.&nbsp; There are 4 additional pin bodies for applying force.&nbsp; 2 pins are fixed x/y/z, 2 pins are fixed z, and Body A is fixed z as well.<BR /><BR />The general idea is move 2 of the pins x/y and watch the show.&nbsp; It kind of works.&nbsp; The safety factor and stresses are a complete joke, but if I apply comically large forces then I can get some stress gradients to show up.&nbsp; Sucks that I can't really do FEA to figure out overall structural strength, but it's still useful for comparison to other similar designs ... or so I thought.<BR /><BR />I have another part, let's call it Body B.&nbsp; Body A is a save-as from Body B and then a couple tubes removed.&nbsp; Body B has the copy-pasted force/constraint pins from Body A's simulation.&nbsp; So basically the same part, same setup.&nbsp; Went through super carefully, made sure all the simulation settings were exactly the same.<BR /><BR />Sim runs on Body B, but no matter how much force I apply, there's no stress.&nbsp; I mean like "Max: 0.00 psi" where the highest stress should be - which is interesting because it's doing some calculation in order to correctly locate the max stress riser, but there are no opposing forces, etc.<BR /><BR />Anyways, it's a single solid body with 12 tubes.&nbsp; I can't make the model any simpler.&nbsp; It would just be really really nice if this one thing worked just this one time, so I can finally get a 3-year proof of concept vehicle out the door without having it completely fail on the first run, causing a spectacular crash, leaving me to bleed out in nature, alone and freezing.&nbsp; Any help here is deeply appreciated.<BR /><BR />Happy to provide additional details.&nbsp; Thanks <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> Sun, 24 Dec 2023 21:54:59 GMT Anonymous 2023-12-24T21:54:59Z https://forums.autodesk.com/t5/fusion-support-forum/simulation-solve-doesn-t-work-consistently-for-identical-parts/m-p/12460714#M23680 <P>I have a static stress simulation for a body, let's call it Body A, that's a few basic tubes joined together.&nbsp; There are 4 additional pin bodies for applying force.&nbsp; 2 pins are fixed x/y/z, 2 pins are fixed z, and Body A is fixed z as well.<BR /><BR />The general idea is move 2 of the pins x/y and watch the show.&nbsp; It kind of works.&nbsp; The safety factor and stresses are a complete joke, but if I apply comically large forces then I can get some stress gradients to show up.&nbsp; Sucks that I can't really do FEA to figure out overall structural strength, but it's still useful for comparison to other similar designs ... or so I thought.<BR /><BR />I have another part, let's call it Body B.&nbsp; Body A is a save-as from Body B and then a couple tubes removed.&nbsp; Body B has the copy-pasted force/constraint pins from Body A's simulation.&nbsp; So basically the same part, same setup.&nbsp; Went through super carefully, made sure all the simulation settings were exactly the same.<BR /><BR />Sim runs on Body B, but no matter how much force I apply, there's no stress.&nbsp; I mean like "Max: 0.00 psi" where the highest stress should be - which is interesting because it's doing some calculation in order to correctly locate the max stress riser, but there are no opposing forces, etc.<BR /><BR />Anyways, it's a single solid body with 12 tubes.&nbsp; I can't make the model any simpler.&nbsp; It would just be really really nice if this one thing worked just this one time, so I can finally get a 3-year proof of concept vehicle out the door without having it completely fail on the first run, causing a spectacular crash, leaving me to bleed out in nature, alone and freezing.&nbsp; Any help here is deeply appreciated.<BR /><BR />Happy to provide additional details.&nbsp; Thanks <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span></P> Sun, 24 Dec 2023 21:54:59 GMT https://forums.autodesk.com/t5/fusion-support-forum/simulation-solve-doesn-t-work-consistently-for-identical-parts/m-p/12460714#M23680 Anonymous 2023-12-24T21:54:59Z https://forums.autodesk.com/t5/fusion-support-forum/simulation-solve-doesn-t-work-consistently-for-identical-parts/m-p/12461001#M23681 <BLOCKQUOTE><HR />@Anonymous&nbsp;wrote:<BR /><P>Any help here is deeply appreciated.<BR />Happy to provide additional details.&nbsp;</P><HR /></BLOCKQUOTE><P>@Anonymous&nbsp;</P><P>Can you File&gt;Export your *.f3d file to your local drive and then Attach it here to a Reply?</P> Mon, 25 Dec 2023 05:05:44 GMT https://forums.autodesk.com/t5/fusion-support-forum/simulation-solve-doesn-t-work-consistently-for-identical-parts/m-p/12461001#M23681 TheCADWhisperer 2023-12-25T05:05:44Z