Learning Forum

[1976197987]

Hello everyone,

I am confused about the derivation of the constitutive equation for Shape Memory Alloys in LS-DYNA Theory Manual. 

When the bulk and shear modulus are functions of the martensite fraction according to formula (23.30.4), the formula (23.30.15) about (F_trial and belta) is obtained.

 

[1976197987]

What does the expression in formula (23.30.27) look like and what's the difference between in formula （23.30.16）

[Pedram Samadian]

Hello,

in (23.30.16) is calculated at the timestep n, so it is the same as .

  can be obtained using Equations (23.30.15) and (23.30.16).

Thanks,

Pedram