Effect of Uniaxial Tensile Loading on the Stiffness of Two-Dimensional Woven SiC/SiC - Modeling and Numerical Simulation

Authors

  • H. Ismar
  • F. Schröter
  • F. Streicher

Abstract

The behavior of two-dimensional woven SiC/SiC ceramic matrix composites (CMC) is studied by numerical simulations based on the finite element method (FEM). Starting point of the investigations is a
micromechanical model regarding a three-dimensional unit cell. Damage as well as fracture of the single
components - fiber bundles and inter yarn matrix - are regarded from a statistical point of view using
Weibull distribution. Statements of the behavior of the whole composite are possible by building up a
macrostructure. The purpose of the current study is set on the stifiness reduction of the 2Dw composite
subjected to tensile loading in one of the fiber directions. Because of the strong anisotropy of the dam-
age a tensor approach is used considering the terms of the elasticity matrix, which are determined for
increasing load. Regarding the elasticity matrix the behavior of the composite for any loading situation
can be predicted after an arbitrary preloading in one of the fiber direction.

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Published

2019-09-16

How to Cite

Ismar, H., Schröter, F. and Streicher, F. (2019) “Effect of Uniaxial Tensile Loading on the Stiffness of Two-Dimensional Woven SiC/SiC - Modeling and Numerical Simulation”, Technische Mechanik - European Journal of Engineering Mechanics, 21(2), pp. 91–100. Available at: https://journals.ub.ovgu.de/index.php/techmech/article/view/1046 (Accessed: 24 November 2024).

Issue

Vol. 21 No. 2 (2001)

Section

Article