FEAP User Forum

FEAP => Input File Issues => Topic started by: crepes on September 19, 2022, 04:35:13 AM

Title: Question for Examples for Linear Viscoelasticity Complex Arithmetic
Post by: crepes on September 19, 2022, 04:35:13 AM

Dear all,

are there any examples for using linear viscoelasticity in the complex arithmetic?

There is some information in the manual, but it feels kind of tricky to use it.

Kind regards

Title: Re: Question for Examples for Linear Viscoelasticity Complex Arithmetic
Post by: Prof. R.L. Taylor on September 19, 2022, 06:05:03 AM

Try the attached file

Title: Re: Question for Examples for Linear Viscoelasticity Complex Arithmetic
Post by: crepes on September 20, 2022, 01:43:58 AM

Thank you very much, this helps a lot. With that, I was able to create input files for some simple simulations for 2D solids. The results seem to be reasonable.

I have a follow-up question:

Does the "PERIodic HILL" command work within the complex arithmetic?

I used it assuming that it would produce a real-valued strain which seems to work. However, even though I have included viscoelastic behavior, the imaginary stress is zero. I would have expected it to be nonzero.

Kind regards

Title: Re: Question for Examples for Linear Viscoelasticity Complex Arithmetic
Post by: Prof. R.L. Taylor on September 20, 2022, 04:26:01 AM

I do not think it is coded for complex.

Title: Re: Question for Examples for Linear Viscoelasticity Complex Arithmetic
Post by: crepes on September 20, 2022, 06:50:16 AM

Okay, thanks