Increase in demand on Models containing Contracts with Friction

Hi Andy,

How big is the model in terms of number of nodes?

Can you run without friction and search distance set to auto?

Hello Prakash,

Number of nodes = 772,243

Elements = 776,988 (vast majority QUAD4).

With search distance set to auto, I assume you mean no distance specified.

Yes it runs with those settings

Hi

How are you calculating the search distance?

It is twice the average edge length on the master surface when using contact type Slide.

I measured it as 2mm

Hi Andy,

 I think the problem is with Search Distance. Can you run with Auto,

Meanwhile I will check with experts about the issue.

Can you provide details about analysis?

Many thanks Prakash,

It is still complaining of memory requirement. A curious thing is that .out file is disagreeing with the optistruct run screen... .out (attached) suggests only 41GB ram required for in-core whilst the optistruct states 80GB

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

Unable to find an attachment - read this blog

@Andy,

Is the .out and screen shot are for same run and same model?

I both cases the memory is not sufficient, though.

That's correct, they are both same models

Are there any parameter cards which can be used to help?

@Andy@LamteqSolutions

One way is to increase the RAM.

Maybe you can change the mesh size, have a finer mesh where contact is required and coarse at areas of non-interest, have contacts only where necessary