Learning Forum

[sonerulger]

Hello to everyone

I want to make an analysis about HDPE pipes. The analysis must be include heat, time and pressure. I want to bend a plastic pipe and see results for spring-back etc. The pipe's temperature will be 100 degrees C at the begining. Then I'm gonna bend it to make an elbow. And then the pipe will wait for room temperature for 24 hours. Can I do that analysis on Ansys? Can Static Structural analysis include those parameters? Thanks for your help.

[John Doyle]

As you know, HDPE is a hard thermoplastic material. ANSYS does not have a standard material model for thermoplastics. You would probably have to resort to a custom USERMAT routine. What you describe does not sound like small strain. If it were very small strain and proportional, monotonic loading, you might be able to do something approximate with BKIN metal plasticity as long as you validated it carefully. Development is working on a "Three Network Model" intended on representing theromplastics. Hopefully, it is supported for Release R2022.