کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5026902 1470629 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High-rate Deformation and Spall Fracture of Some Metals
ترجمه فارسی عنوان
تغییر شکل با سرعت بالا و شکست در بعضی از فلزات
کلمات کلیدی
روش کالسکی، آزمایش هواپیما، قدرت شکست دماسنج آلومینیوم، فلز مس، فولاد ضد زنگ،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی

An investigation of high-rate deformation and spall fracture of some metals in a wide range of strain rate was carried out by using the Kolsky method and plane-wave shock experiment. The dynamic stress-strain curves were obtained and speed dependences of the strength characteristics were constructed for commercially pure aluminum and copper, as well as for stainless steel. The strength limits and their dependences on the strain rate and temperature are determined. Based on the obtained mechanical characteristics, the parameters of Johnson-Cook model for stainless steel were determined with due allowance for the influence of the strain rate and temperature on the yield surface radius. It is noted that the time dependence of the spall strength weakly dependent on temperature. A rationale is offered that explains the results within the framework of Zhurkov's kinetic theory of strength.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Procedia Engineering - Volume 197, 2017, Pages 260-269
نویسندگان
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