Carry Over of pre stress for parametric optimisation while using Livelink for Solidworks

Sharan Kumar Reddy Kogatam

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I aim to perform a simulation that involves compliant mechanisms (mechanisms that achieve their motion due to their elasticity). Specifically, I am interested in orthoplanar mechanisms. These are flat sheets that have specific cuts to enable motion in perpendicular to plane direction. I have created a Livelink for Solidworks to allow ease of modelling and parametrization.

I have 4 layers of orthoplanar flexure mechanisms. I want to perform a simulation in 2 phases. Phase 1 involves the assembly of orthoplanar flexures. But the catch is the top most orthoplanar flexure and the bottom most orthoplanar flexure are to be pre deflected. The other 2 flexures in the middle are in neutral position. Phase 2 is analysis phase for which I want to connect all four orthoplanar flexures. That is the top most connects to the middle, middle connects to lower middle, lower middle flexure connects to lower most. But for me in phase 2 it is important that the top most and bottom most are pre deflected and pre stressed. So at end of this phase two of my flexures are deflected and two are not deflected. But they are all connected together at the end of this phase.

How can I do this in the most effective way. Keep in mind I am using Livelink for Solidworks and am aiming to perform optimisation on design parameters. I have tried to use remesh deformed configuration but realised that this would not contain the pre stress that I would need. It would be great if you could provide a simple easy-to- implement solution that would integrate in my current workflow with minimal changes.



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