کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6704121 1428518 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling fracture and delamination in composite laminates: Energy release rate and interface stress
ترجمه فارسی عنوان
شکست مدل سازی و لایه بندی در لمینیت کامپوزیت: میزان انتشار انرژی و استرس رابط
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This article presents an approach for modelling fracture and delamination, based on the partition of finite elements and on the energy release rate due to crack propagation in cross-ply laminates. The energy release rate is implemented within an Extended Finite Element Method (XFEM) framework. This approach is enabling the prediction of delamination propagation without pre-allocating damage zones. No element deletion techniques were used either. Mesh refinement was not needed for the propagation of cracks. Virtual testing of transverse cracks - eventually triggering delamination in cross-ply laminates - is presented to show the technique efficiency. Thus, a maximum energy release rate of 0.9kJ/m2 is found for a transverse crack within [00,900]s laminate. When maximum energy release rate is reached, delamination in the {00/900} interface is triggered. Furthermore, delamination in a composite double cantilever beam is simulated and presented in some detail. The results were compared with experimental outputs and/or by other numerical means showing an excellent correlation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 189, 1 April 2018, Pages 641-647
نویسندگان
, , ,