کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6708427 502946 2014 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An XFEM-based methodology for fatigue delamination and permeability of composites
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
An XFEM-based methodology for fatigue delamination and permeability of composites
چکیده انگلیسی
A methodology for the simulation of thermal fatigue delamination in composites and prediction of delaminated crack opening displacement (DCOD) and composite laminate permeability is presented. This is critical for the safe design of composite cryogenic fuel tanks. The methodology, which is based on an extended finite element method for simulation of crack growth, does not require a priori definition of initial crack (delamination) length or crack propagation path. In contrast, previous work required estimation of delamination length and corresponding number of thermal cycles based on experimental measurements. The methodology is validated against measurements from standardised static and fatigue delamination test methods. Prediction of delamination crack growth in a quasi-isotropic laminate under cryogenic fatigue loading is used to establish the effect of initial interlaminar defect length on subsequent crack growth, as well as the effect of delamination length on DCOD and permeability. A key additional benefit is that the proposed method can simulate both inter- and intralaminar crack growth in two- and three-dimensional geometries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 107, January 2014, Pages 205-218
نویسندگان
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