کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
281139 508439 2017 19 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Three-dimensional stress analyses in composite laminates with an elastically pinned hole
ترجمه فارسی عنوان
تجزیه و تحلیل استرس سه بعدی در ورقه های کامپوزیت با یک سوراخ الاستیکی الصاق شده
کلمات کلیدی
تجزیه و تحلیل تنش سه بعدی؛ ورقه کامپوزیت؛ پیوند پیچ شده ؛ بارگذاری بای پس؛ تماس اصطکاکی؛ روش اجزاء مرزی
Three-dimensional stress analysis; Composite laminates; Bolted joint; Bearing and bypass loading; Frictional contact; Boundary element method
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

We present a three-dimensional (3-D) stress analysis for composite laminates with an elastically pinned circular hole. The effects of friction, bearing force and bypass loading on the stress redistribution are studied in detail. The numerical approach is based on a multilayer boundary element method (MLBEM), a non-traditional BEM particularly designed for anisotropic composite laminates, coupled with the traditional BEM for the pin filling the hole. The unique characteristic of the MLBEM is that the fundamental solution employs Green’s functions that satisfy the interfacial continuity conditions and top- and bottom-surface traction-free and symmetry conditions. This fundamental solution allows us to design a BE scheme without involving discretization on the interfaces and surfaces unless the laminates are imposed by different boundary conditions. Consequently, in this case of pinned joint, only the hole surface among the composite boundary and interfaces needs to be discretized. A Coulomb-type friction law is used to simulate the frictional contact interaction between the composite and pin. To solve the frictional contact problem, an iterative scheme of successive over-relaxation has been proposed where the contact location and frictional contact condition are determined at the same time in the iteration solution. By applying the MLBEM, stress analyses are performed for a laminate plate with the stacking sequence . The issues of engineering interests, such as the loading-sequence and cycling dependencies of stress state due to the presence of friction, are addressed. The solutions, shown by complicated contact maps and stress states around the hole, suggested that a 3-D approach to pinned composite joints is necessary for the interpretation of the underlying physics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 40, Issue 8, April 2003, Pages 2017–2035
نویسندگان
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