摘要
通过从不同截面形式的6082-T6铝合金型材上切取的90个材性试样的拉伸试验,研究了结构用铝合金材料的受力特点与应力-应变关系曲线;测量并统计了材料力学参数,包括:规定非比例延伸强度、抗拉强度、弹性模量、断裂伸长率、泊松比和强化系数。结果分析表明国产结构用6082-T6的本构关系基本服从Ramberg-Osgood模型;对力学性能试验数据的统计分析表明,力学参数均基本服从正态分布;规定非比例延伸强度、弹性模量和泊松比的统计值与规范规定值很接近;强化系数的经典计算方法的计算值略大于Steinhardt建议值。
Through the tensile tests of 90 coupons which were cut from various cross-section shapes of 6082-T6 aluminum alloy products, the material mechanical characteristics and the stress-strain relationship of the structural aluminum alloy were studied. Statistical analyses were performed for several material mechanical properties including proof strength, tensile strength, the elastic modulus, breaking elongation, Poisson＇s ratio and enhancement coefficients. Test results show that the constitutive relationship of the 6082-T6 aluminum alloy made for the domestic structures obeys the Ramberg-Osgood model basically. The statistical analysis of the experimental data indicates that material mechanical properties subject to the normal distribution; the statistical values of proof strength, elastic modulus, and Poisson＇s ratio are close to those given in the design code; the enhancement coefficient obtained by the traditional method is slightly higher than that recommended by Steinhardt.
出处
《工程力学》
EI
CSCD
北大核心
2013年第B06期309-313,319,共6页
Engineering Mechanics
基金
国家自然科学基金项目(51108126)
