XFEM crack growth in bi-material model

- July 18, 2019 at 2:08 pm
  theodoreyang
  Subscriber
  Hello everyone,
  
  I'm trying to realise the crack growth simulation in bimaterial model by xfem (phantom node method, maximum circumferential stress criterion).
  
  However, it seems difficult to apply two fracture criteria separately on MAT 1 and MAT 2 by
  
  TB,CGCR,,,,STTMAX
  
  TBDATA,1,VALUE
  
  Because each time in /SOLU, we can only choose one fracture criterion in CGROW, and cannot capture the crack tip position directly during the solution period. It means that we cannot apply (IF ELSE) command to choose the criterion either.
  
  Is it possible to overcome this limitations in ANSYS APDL?
  
  Thanks!
```
CGROW, NEW, 1

CGROW, CID, 1

CGROW, METHOD, XFEM       ! Uses XFEM method for the crack propagation

CGROW, FCOPTION, MTAB, 2  ! Fracture criterion
```

Viewing 0 reply threads

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series

The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

Trending discussions