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Simple beam model for the shear failure of interfaces.
F Raischel1, F Kun, H J Herrmann
1ICP, University of Stuttgart, Pfaffenwaldring 27, D-70569 Stuttgart, Germany. raischel@ica1.uni-stuttgart.de
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 31, 2005
Summary
We developed a model for glued interface shear failure using elastic beams. This model predicts progressive failure and macroscopic behavior under load, enabling efficient simulation of large systems.
Area of Science:
- Materials Science
- Mechanical Engineering
- Solid Mechanics
Background:
- Glued interfaces are critical in many engineering applications.
- Understanding shear failure mechanisms is essential for structural integrity.
- Existing models may not fully capture the complex failure processes.
Purpose of the Study:
- To propose a novel model for the shear failure of glued interfaces.
- To analytically derive the macroscopic constitutive behavior of the interface.
- To develop an efficient simulation technique for studying progressive failure.
Main Methods:
- Modeling the interface as an array of elastic beams.
- Incorporating stretching and bending deformation modes with random breaking thresholds.
- Applying a von Mises-type breaking criterion for combined modes.
- Utilizing global load sharing assumptions.
- Developing an efficient simulation technique for large systems.
Main Results:
- Analytical derivation of the macroscopic constitutive behavior.
- Description of the microscopic process of progressive interface failure.
- Demonstration of an efficient simulation technique for large-scale analysis.
- Exploration of localized interaction effects via computer simulations.
Conclusions:
- The proposed model accurately captures the shear failure of glued interfaces.
- The analytical and simulation methods provide valuable tools for predicting interface behavior.
- The study offers insights into the fundamental mechanisms governing progressive failure in bonded materials.