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Studying Large Amplitude Oscillatory Shear Response of Soft Materials
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Simulation of shear bands with Soft PARticle Code (SPARC) and FE.
Barbara Schneider-Muntau1, Chien-Hsun Chen1, S M Iman Bathaeian1
1Division of Geotechnical and Tunnel Engineering, University of Innsbruck, Technikerstr. 13, 6020 Innsbruck, Austria.
GEM : International Journal on Geomathematics
|June 10, 2017
Summary
This study numerically investigates shear band development in clay using the Soft Particle (SPARC) and Finite Element (FE) methods. Results compare SPARC
Area of Science:
- Continuum Mechanics
- Geotechnical Engineering
- Computational Methods
Background:
- Shear bands are critical in soil mechanics, influencing material behavior under stress.
- Understanding shear band development requires advanced numerical simulations.
- Existing methods may have limitations in capturing localized deformations.
Purpose of the Study:
- To numerically investigate shear band development, thickness, and orientation.
- To compare the meshless Soft Particle (SPARC) method with the mesh-based Finite Element (FE) method.
- To analyze the performance of a novel barodesy constitutive model for clay.
Main Methods:
- Simulating biaxial tests using the Soft Particle Code (SPARC) and Finite Element Method (FEM).
- Employing a novel nonlinear constitutive model, barodesy, for clay behavior.
- Utilizing a collocation numerical method based on strong formulation for SPARC.
Main Results:
- Evaluation and analysis of shear band inclination and thickness.
- Comparison of SPARC and FE method simulation results for localized deformation.
- Identification of advantages and limitations of the SPARC method.
Conclusions:
- SPARC and FE methods provide insights into shear band phenomena.
- The study highlights the capabilities and constraints of SPARC for geotechnical simulations.
- Numerical results are validated against experimental and theoretical data.
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