کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9706086 1465101 2005 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analytical and numerical approach to prediction of forming limit in tube hydroforming
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Analytical and numerical approach to prediction of forming limit in tube hydroforming
چکیده انگلیسی
Analytical and numerical analyses of forming limit in tube hydroforming under combined internal pressure and independent axial feeding are discussed in this paper. To predict the initiation of necking, Swift's criterion for diffuse plastic instability is adopted based on Hill's general theory for the uniqueness to the boundary value problem. In addition, in order to predict fracture initiation, Oyane's ductile fracture criterion is introduced and evaluated from the histories of stress and strain calculated by means of finite element analysis. From the comparison with a series of tube bulge tests, the prediction of the bursting failure based on the plastic instability and the ductile fracture criterion demonstrates to be reasonable so that these approaches can be extended to a wide range of practical tube hydroforming processes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mechanical Sciences - Volume 47, Issue 7, July 2005, Pages 1023-1037
نویسندگان
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