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imvinothvj

How to mesh a cruved surface without Warpage and Jacobian

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Hello,

 

I've been trying to improve the quality of mesh for a vehicle frame. I built the FE model and found quiet a lot of quality errors most of which were warpage and Jacobian. I understand the importance of the two criteria. But I'm just not able to bring them down to 0. I've tried reducing the element size of the whole components. I have two questions in the process.

 

1. Can I keep the element size of the curved surfaces very low (around 0.1mm) while keeping the rest of the components (without any quality problem) somewhere around 2mm ?

2. What can be done to keep the model out of quality errors on the whole ? Because I have around 86 components to deal which will become tedious. 

 

Thanks in advance

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1- depends on your analysis type, if you are simulating vehicle crash, you should make mesh size equally

2- if you cannot make ideal model, just expand quality thresholds example warpage up to 10Deg, jacobian down to 0.5 . If you don't know how much quality is good => let hm default values are your choice.

VINOTH KUMAR likes this

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Hello,

 

1- If you are doing a simple static analysis on the vehicle frame you can go for the different mesh sizes at different places. But if you are doing some other analysis the mesh size should be same no matter if trias are coming.

 

2- This also depends on what kind of analysis you are doing. If you are doing a very critical analysis and the slightest change will affect the results then those components you need to mesh as accurately as possible but the components which are not so important to your study you can increase the check element quality values in HM and go along with it.

 

Thankyou

VINOTH KUMAR likes this

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