Contact strength in ANSYS Workbench

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SUMMARY

The discussion focuses on modeling contact strength between bricks and mortar in ANSYS Workbench, specifically using "Bonded contact" and "Contact Debonding" with "Cohesive zone material" properties. The user intends to apply maximum normal and shear stresses derived from experimental data to define contact parameters. However, they encountered issues with the contact not debonding under applied shear forces in Mode II. The conversation highlights the challenges of simulating brittle failure due to loss of adhesion in contact mechanics.

PREREQUISITES
  • Understanding of ANSYS Workbench contact modeling techniques
  • Knowledge of cohesive zone material properties
  • Familiarity with normal and shear stress calculations
  • Experience with simulating brittle failure mechanisms
NEXT STEPS
  • Research "Cohesive zone modeling in ANSYS Workbench"
  • Learn about "Contact Debonding" implementation techniques
  • Explore "Failure criteria for brittle materials" in simulations
  • Investigate "ANSYS Workbench Mode II shear testing" methodologies
USEFUL FOR

This discussion is beneficial for mechanical engineers, simulation specialists, and researchers focused on contact mechanics and material failure analysis in ANSYS Workbench.

Jiri Fila
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Hello,
I want to model in Ansys Workbench contact between bricks and mortar. From experiments I know maximum normal stress and maximum shear stress. Respectively I know forces in which the contact fails. The failure is brittle due to lost of adhesion.
I tried to use "Bonded contact" and "Contact Debonding" with "Cohesive zone material" properties (see pic. bellow). For "Maximum Normal Contact Stress" I will use maximum normal stress calcutated from maximum force measured during experiments. For "Maximum Equivalent Tangential Contact Stress" I will use maximum shear stress calcutated from maximum force measured during experiments. "Contact Gap" and "Tangential Slip" I choose as 0,001 mm because I want contact nondeformable.
Can anyone tell me, if my idea is correct? When I tried to test it, contact in Mode II (with applied shear force) did not debonded at supposed applied force.
Thank you in advance for any help.
 

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Hi Jiri Fila, I would like to ask did you solve the problem or still working on it? I am also trying to simulate some similar contact behavior in ansys workbench.
 
Unfortunately, not yet.
 

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