Numerical simulation of triaxial test to determine the Druger-Prager parameters for silicon

Mir, Amir and Luo, Xichun and Siddiq, Amir (2015) Numerical simulation of triaxial test to determine the Druger-Prager parameters for silicon. In: Automation and Computing (ICAC), 2015 21st International Conference on. IEEE, Piscataway. ISBN 97809926801

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    Abstract

    Finite element simulation of material response behavior under deformation entails identification of constitutive model parameters to truly expound the material behavior. Silicon is found to be hard and brittle and in the absence of experimental data, it is difficult to obtain constitutive model parameters to simulate the material deformation. In this paper numerical simulation of triaxial compression and triaxial tension tests are performed at different confining pressures and a method was adopted to determine the Drucker Prager parameters of silicon. The method involves extracting the data from stress-strain plots of triaxial compression and tension tests to calibrate the ultimate yield surface and then plotting the data in the meridional (p-t) stress plane.