کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5016351 | 1464967 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystal plasticity-based impact dynamic constitutive model of magnesium alloy
ترجمه فارسی عنوان
مدل ساختاری پویا کریستالی مبتنی بر پدیده آلیاژ منیزیم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
The impact dynamic mechanical behavior of a magnesium alloy (extruded AZ31B) is first investigated by using the split-Hopkinson pressure bar (SHPB) apparatus. The dynamic tensile and compressive tests are performed at various strain rates ranging from 1250-2150Â sâ1 and from 1600-3500Â sâ1, respectively. The loading direction is set perpendicular to the extrusion direction of the AZ31B alloy. Experimental observation shows that the strain-rate sensitivity of the AZ31B alloy present under dynamic tension is higher than that under compression. Based on crystal plasticity and the approach of strain-rate sensitivity control used in the Preston-Tonks-Wallace model, a new impact dynamic constitutive model is established to describe the dynamic stress-strain responses of the AZ31B alloy. Finally, comparing simulations with corresponding experiments, the simulations are found to agree well with the experiments, thus verifying the developed model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mechanical Sciences - Volume 119, December 2016, Pages 107-113
Journal: International Journal of Mechanical Sciences - Volume 119, December 2016, Pages 107-113
نویسندگان
Qijun Xie, Zhiwu Zhu, Guozheng Kang, Chao Yu,