Finite strip analysis of cracked laminate: Stress based plane strain approach

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • The Petroleum Institute

Abstract

Stress based finite strip model is developed for analysis of cracked laminate. Plane strain state is assumed and finite strip method is formulated. Total complementary potential energy is minimized and fourth order Euler Lagrange governing equations are presented. This stress based plane strain approach analyzes general lay up and loading conditions. It provides flexibility to control the number of finite strip nodal lines within each lamina hence stress behavior can be predicted across each lamina at desired location of the structure. It enhances the capability of stress based approach by differentiating stress behavior near and away from the crack tip. Boundary conditions including natural boundary conditions are imposed appropriately to solve governing Euler's equations. Results from this current semi analytical model are compared with analytical models available in literature. These are also compared with already available generalized plane strain based finite strip model for cracked laminate which evaluates displacements as unknowns by minimizing total potential energy. This work has extended the analysis of the cracked laminate by developing it with stress based finite strip approach which is applicable to any layup including non cross ply structures. Limitations of this model due to plane strain approach are discussed and results are compared with array of examples from the available literature.

Details

Original languageEnglish
Title of host publicationProceedings of the American Society for Composites - 29th Technical Conference, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting
Publication statusPublished - 1 Jan 2014
Event29th Annual Technical Conference of the American Society for Composites, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting - La Jolla, San Diego, United States
Duration: 8 Sep 201410 Sep 2014

Conference

Conference29th Annual Technical Conference of the American Society for Composites, ASC 2014; 16th US-Japan Conference on Composite Materials; ASTM-D30 Meeting
CountryUnited States
CityLa Jolla, San Diego
Period8/09/1410/09/14

ASJC Scopus subject areas