Numerical Analysis of a Ceramic Matrix Composites with Strain Induced Damage Using Finite Element Method

被引：0

作者：

Pandu, Ratnakar ^{[1
]}

Ramakrishnudu, I ^{[2
]}

Babu, Vimal ^{[3
]}

机构：

[1] SR Int Inst Technol, Dept Mech Engn, Keesara Mandal Hyderabad, AP, India

[2] St Martin Eng Coll, Dept Engn Mech, Hyderabad, Andhra Pradesh, India

[3] Dept Engn Mech, Hyderabad, Andhra Pradesh, India

来源：

2013 INTERNATIONAL CONFERENCE ON ADVANCED NANOMATERIALS AND EMERGING ENGINEERING TECHNOLOGIES (ICANMEET) | 2013年

关键词：

Finite Element Method; Damage Mechanisms; Ceramic Matrix Composites; Tows; Orthotropic Material; MODEL;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A computationally efficient FE model has been developed to predict the mechanical behavior of ceramic matrix composites with strain-induced damage. The effects of different damage modes and their interactions on mechanical behavior have been considered. The non-linear longitudinal material properties are discretised to a multi-linear elastic curve. The constitutive equations for orthotropic materials are used to update the stresses for each increment of the analysis. The model is implemented by a Finite Element package, ANSYS with a user defined subroutine, UMAT. In all analyses, the expected mechanical behavior has been obtained. Strain induced damage modes and their interactions are modeled using the finite element method for Ceramic Matrix Composites (CMC) tows and 0 degrees/90 degrees laminates. For both situations, bi-axial straining is addressed, together with the degradation of Young's modules and Poisson's ratios. In all cases, the expected stress-strain behavior is calculated.

引用

页码：648 / 654

页数：7

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