高压物理学报2012，Vol.26Issue(2)：171-176,6.
复合应力下泡沫铝屈服行为实验研究
Experimental Investigation on the Yield Behavior of Aluminum Foams under Combined Stress States
摘要
Abstract
The initial yield behavior of Alporas closed-cell aluminium foams with relative density 8.5% under biaxial loading has been experimentally investigated using the Arcan apparatus and the universal testing machine（INSTRON 5544）.The experimental yield surfaces measured from biaxial experiments are compared with various proposed phenomenological yield surface models.The comparison result indicates that the experimental data are consistent with both Miller and Deshpande and Fleck criteria.Biaxial experiments have been carried out on aluminium foams at various loading velocities to study the effect of strain rate on the initial yield surface.The results showed that the initial yield stresses of Alporas closed-cell aluminium foams are not sensitive to the equivalent strain rate ranged from 7.0×10-3 s-1 to 1.0×10-1 s-1.关键词
复合应力/泡沫铝/尺寸效应/屈服面/应变率效应Key words
combined stress/aluminum foam/size effect/yield surface/strain rate effect分类
数理科学引用本文复制引用
周志伟,王志华,赵隆茂,树学峰..复合应力下泡沫铝屈服行为实验研究[J].高压物理学报,2012,26(2):171-176,6.基金项目
国家自然科学基金 （）
山西省高等学校优秀青年学术带头人支持计划 （）
教育部新世纪优秀人才计划 （）
