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Mesh Independence

Question asked by Eddie Chua on Sep 7, 2017
Latest reply on Sep 7, 2017 by Siavash Khajehhasani

Hi all,

 

I'm a new user to Solidworks so please forgive me if I'm asking stupid questions here.

 

Recently I have a chamber model that I would like to simulate pressure, and achieve a deflection study as part of my final year project.

However along the way I've learnt that a mesh independence study should be conducted before I carry out an accurate simulation.

 

From what I know (or picked up on youtube, so sorry if I'm missing out on something) is that I should carry out many reiterations of a simulation while slowly moving from a coarse mesh size to a fine one.

From there I will plot a max stress vs mesh size graph, and eventually the graph should reach a point where decreasing mesh size will not affect max stress too much.

 

I have tried doing this on my chamber (550x500x20-ish size), going from 64mm element size to 4mm. The results seem to not have achieved the aforementioned point, and so if I'm understanding this, I should go even further and decrease the sizes.

 

However the problem is that my computer seems to be unable to handle that many elements (it's reaching 7m DOF) and I don't know what I can do to complete my mesh independence study.

 

So my question is, how am I able to complete this study without a supercomputer, assuming I'm understanding this correctly.

 

Thank you!

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