Fracture Analysis of 3D Cracked Orthotropic Shells with Extended Finite Element Method
محل انتشار: شانزدهمین کنفرانس بین المللی انجمن هوافضای ایران
سال انتشار: 1395
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 472
فایل این مقاله در 7 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
AEROSPACE16_314
تاریخ نمایه سازی: 13 شهریور 1396
چکیده مقاله:
In this study shell type structures with 3D geometries made of orthotropic materials containing through the thickness cracks are considered. XFEM has been previously utilized for just 2D orthotropic planes andthe available commercial FEM packages likeABAQUS do not support cracked orthotropic shell elements to be solved with XFEM method. Authors prepared a programming code in MATLAB softwarewhich can model 3D orthotropic structures with shellelements. Crack-tip enrichment functions based onanalytical solution of orthotropic cracked plates are used besides Heaviside enrichment functions, toconsider discontinuities. Examples of 2D and 3D shellelement problems with different crack angles and fiber orientations are investigated to validate results in mixed-mode fracture conditions. Parametric studiesare performed to observe the fracture behavior of a pipe with different orientations of the crack and also for different directions of the fiber composites
کلیدواژه ها:
نویسندگان
h zarrinzadeh
PhD student of Structural Engineering Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran,P.O. Box: ۱۵۸۷۵۴۴۱۳, Iran
a deylami
Assistant Professor Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran,P.O. Box: ۱۵۸۷۵۴۴۱۳, Iran
m.z kabir
Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran,P.O. Box: ۱۵۸۷۵۴۴۱۳, Iran