کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7178708 1467471 2014 80 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mixed Mode cohesive law with interface dilatation
ترجمه فارسی عنوان
قانون متجانس حالت یکپارچه با انعطاف پذیری رابط
کلمات کلیدی
شکستگی حالت ترکیبی، قوانین همجوشی همجنسگرا، زبری رابط
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Experimental investigations of adhesive joints and fibre composites have shown that under Mode II cracking, the fracture process induces a displacement normal to the fracture plane. This effect can be attributed e.g. to roughness of the fracture surface under dominating tangential crack face displacements. As the crack faces displace relatively to each other, the roughness asperities ride on top of each other and result in an opening (dilatation) in the normal direction. Furthermore, the interaction of the crack surfaces in the contact zone gives rise to compressive normal stresses and frictional shear stresses opposing the crack face displacements. A phenomenological Mixed Mode cohesive zone law, derived from a potential function, is developed to describe the above mentioned fracture behaviour under monotonic opening. The interface dilatation introduces two new lengths. The cohesive law is implemented in the commercial finite element program Abaqus. The model is validated and tested against experimental results under various mode mixities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics of Materials - Volume 70, March 2014, Pages 76-93
نویسندگان
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