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Asymptotic Analysis of Free‐Edge and Free‐Corner Effects in Laminate Structures
Author(s) -
Mittelstedt Christian,
Becker Wilfried
Publication year - 2005
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200510102
Subject(s) - singularity , gravitational singularity , delamination (geology) , enhanced data rates for gsm evolution , finite element method , composite laminates , boundary (topology) , stress (linguistics) , structural engineering , geometry , fracture (geology) , mathematical analysis , boundary value problem , materials science , boundary element method , mathematics , composite material , engineering , geology , paleontology , telecommunications , linguistics , philosophy , subduction , tectonics
Stress fields in the vicinity of free edges and corners of composite laminates exhibit singular characteristics and may lead to premature interlaminar failure modes like delamination fracture. It is of practical interest to investigate the nature of the arising free‐edge and free‐corner stress singularities ‐ i.e. the singularity orders and modes ‐ closely. The present investigations are performed using the Boundary Finite Element Method (BFEM) which in essence is a fundamental‐solution‐less boundary element method employing standard finite element formulations. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)