کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10627790 990142 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Theoretical and experimental investigation of stress redistribution in open hole composite laminates due to damage accumulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Theoretical and experimental investigation of stress redistribution in open hole composite laminates due to damage accumulation
چکیده انگلیسی
Three-dimensional ply level modeling of discrete damage near an open hole in a quasi-isotropic composite laminate was subsequently considered. Normally the mesh configuration is dictated by the boundaries of the specimen, such as the presence of a hole, creating formidable difficulties to modeling matrix cracking, which is aligned with the fiber direction in a given ply. A mesh independent displacement discontinuity modeling method based on higher order shape functions was constructed for this purpose. The surface of the displacement jump associated with matrix cracking was defined in terms of the domain Heaviside function approximated by using higher order polynomial B-splines. Moiré interferometry was used to determine the strain and displacement fields in the surface layers of a quasi-isotropic composite, previously prestressed beyond the damage initiation load. Good correlation between the experimental data and the stress redistribution predicted by the mesh independent damage modeling technique was observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 36, Issue 2, February 2005, Pages 163-171
نویسندگان
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