Viscoelasticity and solve speed

- October 8, 2025 at 3:40 pm
  
  Dennis Chen
  Subscriber
  
  Hello, I am looking to understand how including viscoelasticity in a material model affects the total solve speed when compared to just a pure linear elastic model. basically, how does adding the prony series affect the solve speed.
  I am looking for the equation in the documentation if this exists inside the Ansys or LS-Dyna docs.
- October 9, 2025 at 12:42 pm
  
  Subodh Adake
  Ansys Employee
  
  Hello,
  Adding prony series might increase the solve time as this includes a non-linearity in the model. For equations on Prony series you can check the Ansys help documentation:
  Ansys help > Mechanical APDL > Material Reference > 4.8. Viscoelasticity.
  Regards.