https://forums.autodesk.com/t5/fusion-design-validate-document/non-monotonic-loading-in-event-simulation/m-p/14251852#M334915 <P>I am having an issue with applying and releasing a force to create non-monotonic loading in event simulation. I would expect the reaction force results to mirror the force curve shape but they do not.&nbsp;</P><P>&nbsp;</P><P>Autodesk would suggest this is easily achieved in their page here:&nbsp;<A title="Dynamic event simulation amplitude curves" href="https://help.autodesk.com/view/fusion360/ENU/?guid=EVENTSIM-DYN-MULTIPLIER-CURVE-CONCEPT" target="_blank" rel="noopener">https://help.autodesk.com/view/fusion360/ENU/?guid=EVENTSIM-DYN-MULTIPLIER-CURVE-CONCEPT</A>&nbsp;</P><P>&nbsp;</P><P>Figure 4 shows what I need to do. I have also tried that loading scheme but to similar illogical results.&nbsp;</P><P>&nbsp;</P><P>Has anyone had success with non-monotonic loading in order to quantify permanent deformation?</P><P>&nbsp;</P><P>Setup: 0.01 seconds of event duration, 25 steps</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Setup Parameters.png" style="width: 924px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659238iBCC80CD617DBA992/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Setup Parameters.png" alt="Event Simulation Setup Parameters.png" /></span></P><P>&nbsp;</P><P>Force application: apply load ramped, hold load, release load ramped, hold no load</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Force Curve.png" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659239i9FA548FE9D44DEA8/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Force Curve.png" alt="Event Simulation Force Curve.png" /></span></P><P>&nbsp;</P><P>Results for reaction force: shape of reaction force curve does not match force application curve</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Reaction Force Results Curve.png" style="width: 895px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659240i7009736BFFD46DDD/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Reaction Force Results Curve.png" alt="Event Simulation Reaction Force Results Curve.png" /></span></P> Tue, 01 Sep 2026 16:52:43 GMT AutoCadLTEng 2026-09-01T16:52:43Z https://forums.autodesk.com/t5/fusion-design-validate-document/non-monotonic-loading-in-event-simulation/m-p/14251852#M334915 <P>I am having an issue with applying and releasing a force to create non-monotonic loading in event simulation. I would expect the reaction force results to mirror the force curve shape but they do not.&nbsp;</P><P>&nbsp;</P><P>Autodesk would suggest this is easily achieved in their page here:&nbsp;<A title="Dynamic event simulation amplitude curves" href="https://help.autodesk.com/view/fusion360/ENU/?guid=EVENTSIM-DYN-MULTIPLIER-CURVE-CONCEPT" target="_blank" rel="noopener">https://help.autodesk.com/view/fusion360/ENU/?guid=EVENTSIM-DYN-MULTIPLIER-CURVE-CONCEPT</A>&nbsp;</P><P>&nbsp;</P><P>Figure 4 shows what I need to do. I have also tried that loading scheme but to similar illogical results.&nbsp;</P><P>&nbsp;</P><P>Has anyone had success with non-monotonic loading in order to quantify permanent deformation?</P><P>&nbsp;</P><P>Setup: 0.01 seconds of event duration, 25 steps</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Setup Parameters.png" style="width: 924px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659238iBCC80CD617DBA992/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Setup Parameters.png" alt="Event Simulation Setup Parameters.png" /></span></P><P>&nbsp;</P><P>Force application: apply load ramped, hold load, release load ramped, hold no load</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Force Curve.png" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659239i9FA548FE9D44DEA8/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Force Curve.png" alt="Event Simulation Force Curve.png" /></span></P><P>&nbsp;</P><P>Results for reaction force: shape of reaction force curve does not match force application curve</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Event Simulation Reaction Force Results Curve.png" style="width: 895px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1659240i7009736BFFD46DDD/image-size/large?v=v2&amp;px=999" role="button" title="Event Simulation Reaction Force Results Curve.png" alt="Event Simulation Reaction Force Results Curve.png" /></span></P> Tue, 01 Sep 2026 16:52:43 GMT https://forums.autodesk.com/t5/fusion-design-validate-document/non-monotonic-loading-in-event-simulation/m-p/14251852#M334915 AutoCadLTEng 2026-09-01T16:52:43Z https://forums.autodesk.com/t5/fusion-design-validate-document/non-monotonic-loading-in-event-simulation/m-p/14259622#M335210 <P>Hi <SPAN style="background: var(--ck-color-mention-background); color: var(--ck-color-mention-text);"><a href="https://forums.autodesk.com/t5/user/viewprofilepage/user-id/11908927">@AutoCadLTEng</a></SPAN> ,</P> <P>&nbsp;</P> <P>Hope you are doing good! Just wanted to follow up on this, were you able to find an answer to your question, or do you still need assistance with this?</P> Wed, 09 Sep 2026 06:05:00 GMT https://forums.autodesk.com/t5/fusion-design-validate-document/non-monotonic-loading-in-event-simulation/m-p/14259622#M335210 bhavani_sankuratri 2026-09-09T06:05:00Z