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Cheol

Difference composite model from contact surface(freeze) model

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Hi. I want to be compare the composite analysis and contact surface (freeze)

example.png.ee563d458ca1fb3c960d3ef82957f329.png

the example is above picture. And I want to check the ERP between 0~3000Hz. and I can get the follow this. (damping material density is 1856.07kg/m^3)

 

composite_vs_contact(linear).thumb.png.e85a2e03377a896af92a1ebd10a939c0.png

 

composite_vs_contact(log).thumb.png.7c46b7baaa0ace356d12fa66e6e2f551.png

 

The blue line is contact surface(freeze) model, The black line is composite model.

 

why the blue line is more big value than black line abouy twice.

why the blue line is more big value than black line.

I want to know why two lines are different exactly.

 

 

 

 

contact_al_dam.fem

contact_al_dam.pch

compostie_test_revised.fem

compostie_test_revised.pch

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The Normal Modes and FRF results match pretty well between the two models.

The difference in ERP results could be coming from the PANELG definition. We see that, for the contact model you have included all the elements to define PANELG.

Please re-run the job by considering only the top plate under PANELG card.

Cheol likes this

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