کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11032066 1645695 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Construction of whole stress-strain curve by small punch test and inverse finite element
ترجمه فارسی عنوان
ساخت منحنی کل فشار استرس با آزمون پانچ کوچک و عنصر محدود معکوس
کلمات کلیدی
آزمون پانچ کوچک عنصر محدود معکوس، مدل کشش مدل آسیب دیدگی منحنی تنش و تنش کامل
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
Small punch test is applied to estimate mechanical properties and damage evolution by a miniature specimen. Combining small punch test and inverse finite element, the elastoplastic parameters in Hollomon model and damage parameters in Gurson-Tvergaard-Needleman (GTN) model were identified by the undamaged and damaged stages of the load-displacement curve. Then, the whole stress-strain curve of 316L austenitic stainless steel was constructed based on finite element simulation of a tensile specimen considering the constructed Hollomon model and GTN model. To validate the constructed whole stress-strain curve, standard tensile test was performed as a control group. The result demonstrates that the constructed stress-strain curve is in agreement with the experimental data obtained by standard tensile test. Finally, the plastic damage distribution and fracture mechanism of the miniature specimen were analyzed to understand the damage evolution of small punch test.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Results in Physics - Volume 11, December 2018, Pages 440-448
نویسندگان
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