A Direct Micromechanical Approach toward the Development of Quadratic Stress Gradient Failure Criteria for Textile Composites

Ryan L Karkkainen; Bhavani V Sankar; Jerome T Tzeng

doi:10.1177/0021998307069905

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A Direct Micromechanical Approach toward the Development of Quadratic Stress Gradient Failure Criteria for Textile Composites

Journal article

Peer reviewed

A Direct Micromechanical Approach toward the Development of Quadratic Stress Gradient Failure Criteria for Textile Composites

Ryan L Karkkainen, Bhavani V Sankar and Jerome T Tzeng

Journal of composite materials, Vol.41(16), pp.1917-1937

2007-08

DOI: https://doi.org/10.1177/0021998307069905

Abstract

Based upon previous results of direct micromechanical method (DMM) analysis of the representative volume element (RVE) of a plain-weave textile composite, two methods for predicting failure envelopes are presented: a parametric ellipse-fitting scheme, and a 27-term quadratic stress-gradient failure criterion. Both include the consideration of micro level stress gradients and effectively predict failure in agreement with the DMM. The parametric ellipse-fitting method was found to agree with DMM results to within a few percent. The quadratic failure criterion was found to agree within 9.3%, but the method is more robust in its ability to predict failure for complex loading cases.

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Collaboration types: Domestic collaboration
Citation topics: 7 Engineering & Materials Science; 7.63 Mechanics; 7.63.367 Delamination
Web Of Science research areas: Materials Science, Composites
ESI research areas: Materials Science

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Details

Title: A Direct Micromechanical Approach toward the Development of Quadratic Stress Gradient Failure Criteria for Textile Composites
Creators: Ryan L Karkkainen - Department of Mechanical & Aerospace Engineering, PO Box 116250 University of Florida, Gainesville, FL, 32611-6250, USA
Bhavani V Sankar - Department of Mechanical & Aerospace Engineering, PO Box 116250 University of Florida, Gainesville, FL, 32611-6250, USA
Jerome T Tzeng - US Army Research Laboratory, Aberdeen Proving Ground, MD 21005-5066, USA
Publication Details: Journal of composite materials, Vol.41(16), pp.1917-1937
Academic Unit: College of Engineering; CoE - Mechanical & Aerospace Engineering
Language: English
Resource Type: Journal article
Record Identifier: 991031614623502976