Shell elements contact
SOLIDWORKS Forums
21 days ago

I am trying to make a static simulation for the following assembly. The tow suspension bars and the three plates are modeled as shells. The rest of the assembly is solid bodies. The middle plate (MP) has contact with the suspension bars (SP). So, there is shell-shell elements contact in the interfacing region.

model.PNG

The shell definition for both MP and SP bar are shown here.

shell.PNG

The global contact is bounded but I set the contact between shell- shell elements and between shell - solid elements as 'No penetration'. The results plot shows that the MP penetrates the SP Although I set the contact to 'No penetration '.

nop1.PNGnop2.PNG


Categories: Simulation

Comments
Last comment By: Bill McEachern   Thu, 23 Nov 2017 22:45:18 GMT
Re: Shell elements contact

shell to shell contact is very tricky only one of the four shell normal combinations will work - I thin it is top top or bottom bottom. If one is solid it is a lot more reliable as solids know which side is the interior and which is the exterior.

By: Bill McEachern  Thu, 16 Nov 2017 16:30:55 GMT
Re: Shell elements contact

It works, Thank you

By: Ayham Aljawabrah  Thu, 16 Nov 2017 17:12:47 GMT
Re: Shell elements contact

The problem came back
I  tried bottom-bottom, top-top and bottom-top combinations but non of them works.

By: Ayham Aljawabrah  Wed, 22 Nov 2017 12:41:55 GMT
Re: Shell elements contact

The problem came back

I  tried bottom-bottom, top-top and bottom-top combinations but non of them works

By: Ayham Aljawabrah  Thu, 23 Nov 2017 20:02:58 GMT
Re: Shell elements contact

what kind of analysis is it? Static or non linear static or non linear dynamic? I may not have an answer as it is a bit hit and miss with this product.

By: Bill McEachern  Thu, 23 Nov 2017 20:07:13 GMT
Re: Shell elements contact

Static Simulation

By: Ayham Aljawabrah  Thu, 23 Nov 2017 20:13:04 GMT
Re: Shell elements contact

how far apart are they at the beginning of the simulation? How thick are the shells? Is there a gap? If so how big is it?

By: Bill McEachern  Thu, 23 Nov 2017 20:21:30 GMT
Re: Shell elements contact

Both middle plate and suspension bars are 0.2 mm thick.

There is no gap between them.

def.PNG

sd1.PNG

sdef2.PNG sd3.PNG

By: Ayham Aljawabrah  Thu, 23 Nov 2017 22:21:48 GMT
Re: Shell elements contact

try a small gap between the parts/surfaces where the contact is failing, like 0.01 mm.

By: Bill McEachern  Thu, 23 Nov 2017 22:45:18 GMT
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