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Fem analysis on mixed-mode fracture of CSM-GRP

✍ Scribed by S. Zhang; C.M. Leech

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 781 KB
Volume: 23
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(86)90160-8

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✦ Synopsis

An FEM analysis for studying a mixed-mode fracture problem of chopped strand mat glass tibre reinforced polyester laminate is presented. The analysis is formulated on the basis of eight-node quadrilateral isoparametric elements. The collapsed triangular quarter-point singular elements were used for calculating stress intensity factors Kr and Krr. The crack propagation process was computed by implementing a constraint release technique. Three different approaches to the solution of stress intensity factors K, and Ku, were compared. The effect of constraint condition imposed upon the displacement of the three collapsed nodes of the crack tip elements on the KI and KII results was evaluated. The mixed-mode critical stress intensity factors KI,. and KII, were estimated for CSM-GRP through the consideration of K, and KII calculated and the measured failure load and critical crack length in the experiment.

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