کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6751377 509136 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Research on damage evolution in thick steel plates
ترجمه فارسی عنوان
تحقیق در مورد تکامل آسیب در صفحات فولادی ضخیم
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
This paper reports on the modeling of damage evolution in thick steel plates under load with a continuum damage model proposed by Lemaitre (1985). A constitutive elastic-plastic-damage model was implemented in ABAQUS for the analysis. A set of material tests, including monotonic and repeated tensile tests, were conducted to obtain the mechanical parameters of Grade Q345C steel in 120 mm and 100 mm thick plates. The mechanical properties of material in different directions (horizontal and through-thickness directions) and locations (outer surface, 1/4 thickness and mid-depth) were investigated. Since the numerical load-displacement curves are not matching the experimental curves, a criterion for improving the numerical curves is proposed, and the corresponding damage parameters in the numerical model were also updated. The final improved numerical curves have a good agreement with the experimental results when the updated parameters are included in the analysis. Results show that material close to the outer surface of thick steel plate seems to have better ductility than that near the center indicating that more damage may have occurred during the loading process at mid-depth of the thick plates than near the surface. Damage parameters at mid-depth and in the Z-direction (through-thickness direction) are quite different from those at the outer surface and at 1/4 thickness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Constructional Steel Research - Volume 122, July 2016, Pages 213-225
نویسندگان
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