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6082-T6铝板型材静态力学性能及本构关系试验仿真分析

作者：张琴敏1，黄晓敏1，郭然1，陈所坤2，陈东宇1

关键字：6082-T6,铝板,型材,静态,力学,性,能及,本构,

　
（1.昆明理工大学 建筑工程学院，云南 昆明  650500；
2.中铝国际云南铝应用工程有限公司，云南 曲靖  655335）
    摘要：通过对6082-T6铝板型材试样进行拉伸试验，测量并统计了材料力学性能参数（包括弹性模量、规定非比例延伸强度、比例极限、抗拉强度、断裂伸长率、泊松比、应变硬化系数），分析了6082-T6铝合金材料力学特性和应力-应变曲线，并运用Abaqus建立仿真拉伸试验。对试验数据统计分析表明，弹性模量、泊松比、规定非比例延伸强度的统计值与GB 50429—2007《铝合金结构设计规范》规定值接近；两点法计算的应变硬化指数与规定非比例延伸强度的比值小于建议值；两点法方法获得的本构模型对于真实应力-应变和仿真应力-应变具有较好的预测性。
    关键词：6082-T6铝合金；力学性能参数；本构关系；应变硬化指数；仿真模拟
    中图分类号：TU502+.6；TU395        文献标识码：A        文章编号：1001-702X（2022）09-0118-05
 
Experimental simulation analysis of static mechanical properties and constitutive relationship of 6082-T6 aluminum profile
ZHANG Qinmin1，HUANG Xiaomin1，GUO Ran1，CHEN Suokun2，CHEN Dongyu1
（1.Kunming University of Science and Technology，Institute of Architectural Engineering，Kunming 650500，China；
2.Chinalco International Yunnan Aluminum Application Engineering Co. Ltd.，Qujing 655335，China）
    Abstract：Through the tensile test of 6082-T6 aluminum profile，the mechanical properties parameters of the material （elastic modulus E，specified non-proportional tensile strength，proportional limit，tensile strength，elongation at break，Poisson's ratio and strain hardening coefficient N） were measured and counted. The mechanical properties and stress-strain curve of 6082-T6 aluminum alloy were analyzed，and the simulated tensile test was established by Abaqus. Through statistical analysis of experimental data，the statistical values of material mechanical properties parameters （elastic modulus，Poisson's ratio，specified non-proportional elongation strength） are close to those specified in China's "Code for Design of Aluminum Alloy Structures". The ratio of strain hardening index calculated by two-point method to specified non-proportional extension strength is less than the recommended value. The constitutive model obtained by the two-point method can predict the real stress-strain and simulated stress-strain well.
    Key words：6082-T6 aluminum alloy，mechanical property parameters，constitutive relation，strain hardening index，simulation