Can we show shape memory effect und

[pravin karna]

Can we show shape memory effect under thermal loads in ABAQUS 2020 by in built features or do we need to write an additional sub routine for that?Thanks in advance.

 

[Mustaine3]

What exactly do you mean with "shape memory effect"? Do you mean residual strains and stresses after thermal processes? Or does it refer to a shape memory alloy (Nitinol)?

 

[FEA way]

Superelasticity material model can be used only with stress-displacement elements, not with coupled temperature-displacement ones. User specifies stress levela at which the transformation takes place at the reference temperature. It is assumed that these stress levels change linearly with temperature.

 

[pravin karna]

I want to show shape memory effect of NiTi SMA thin film when actuated by temperature variation. Is there any in-built ABAQUS function for that or do we need to write subroutine? I am working in ABAQUS 2020. Thanks in advance