Learning Forum

[wissenlam]

The above given figures shows the experimental test piece bonded with an adhesive and the mechanical push test is performed on the test piece to find out the bond strength resulting force vs displacement graph. I wanted to simulate the same in ANSYS workbench to compare both the test results, how can I get the same force vs deformation graphs in ANSYS to compare it with mechanical test. Could someone please help me in this regard. Thank you in advance. 

[peteroznewman]

Read up on CZM.  There are many discussions on this site you can find using a Google search.

There is also help on the ANSYS Help system.  Cohesive Zone Model (CZM).

[wissenlam]

Dear Peteroznewman,

Thank you very much for your reply, I have read the articles on CZM, but defining them for my material in ANSYS is confusing. In Ansys, for some models, I cant even see an option for Fracture. Could you please help me further with the problem. I wanted to simulate the mechanical push test in ANSYS, resulting the Force Vs Displacement graphs. Is it possible to get the same Force Vs Displa. graphs in ANSYS too ?. Thank you in advance.

[peteroznewman]

In Mechanical, right click on Model in the Outline and Insert > Fracture.

Yes, you can get a similar Force vs Displacement graph.

Solving the model will be much simpler if you use 1/4 symmetry.  In Figure 2 above, draw a vertical line through the center of the left view and a vertical line through the center of the right view. These are the two symmetry planes. That means you can apply a fixed support to the bottom face of the lower 1/2 leg, and you can apply a displacement to the top face of the center 1/4 leg.  Use a Probe, Reaction Force to extract the force applied by that displacement. Multiply the force by 4 to recover the equivalent full model result.