Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Lodham

    Controlling crack propagation with the XFEM approach

    Thank you guys, this is going to be very useful. I have also seen that there is no enrichment with singular fields at the crack tips in Abaqus. This means that tha crack has to cross completely an element at each increment. I will work on your documents and come back to you if I have additional...
  2. Lodham

    Controlling crack propagation with the XFEM approach

    Anyone using XFEM crack propagation in Abaqus here ?
  3. Lodham

    Controlling crack propagation with the XFEM approach

    Hi there, I am trying to model a quasistatic crack propagation in a solid subjected to bending. I have inserted a precrack and defined a MaxPs traction separation law for the cracked domain. I don't understand how Abaqus deals with the crack propagation ! At the beginning, the stress increases...
  4. Lodham

    Crack propagation in thermal induced stress field

    OK I found how to import the deformed mesh as well as the stress field. You have to be careful because Abaqus add a "-1" extension to the part you import, and the name of the part does not correspond anymore to the one of the .odb file that you have imported. You thus have to delete this "-1"...
  5. Lodham

    Crack propagation in thermal induced stress field

    The thing is the parts are loaded without any crack at the beginning. Once the stress induced by the thermal cooling has reached a certain critical value, a crack initiates and propagates dynamically. Now, I need to import a stress field (or temperature field), but also the deformed geometry...
  6. Lodham

    Crack propagation in thermal induced stress field

    Hi there, I have performed a coupled temp-displacement analysis to simulate the cooling stage of two bodies in contact. Due to the thermal expansion mismatch, a stress tensile stress field appears in one of the two bodies. Now I would like to study how a crack would initiate and propagate in...
  7. Lodham

    Cooling stage simulation of two bodies in contact

    Thanks a lot Corus for your very valuable help :)
  8. Lodham

    Cooling stage simulation of two bodies in contact

    Another question: How do I define the heat loss to the ambient air? Is this in the boundary conditions, load? thanks again
  9. Lodham

    Cooling stage simulation of two bodies in contact

    Another question: How do I define the heat loss to the ambient air? Is this in the boundary conditions, load? thanks again
  10. Lodham

    Cooling stage simulation of two bodies in contact

    Thank you for your answer Corus, I will use the Temp-Displ analysis. I just need to find physical values for gap conductance properties between Silicon and Epoxy. Such data are always difficult to find in the literature! When the two bodies are in contact, there is no real gap between them...
  11. Lodham

    Cooling stage simulation of two bodies in contact

    Hi everybody, I would like to model the cooling operation of two bodies sticked together and with two distincts expansion coefficient. I would like to observe the stress concentration appearing due to the difference in terms of expansion coefficient. I have some difficulties to build the case...

Part and Inventory Search

Back
Top