一种液压气动中应变率拉伸试验机研制及其试验研究  

The development and testing research of a hydro-pneumatic tensile experimental machine at intermediate strain rates

作　　者：姜雄文 李岳[1] 魏宏健 徐施佳 张伟[1] JIANG Xiongwen;LI Yue;WEI Hongjian;XU Shijia;ZHANG Wei(High Velocity Impact Dynamics Lab,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]哈尔滨工业大学高速撞击动力学实验室,黑龙江哈尔滨150001

出　　处：《实验力学》2022年第6期858-866,共9页Journal of Experimental Mechanics

基　　金：国家自然科学基金(11872021)资助。

摘　　要：中应变率(10^(0)s^(-1)~10^(2)s^(-1))条件下材料的动态力学性能是汽车碰撞、外物对飞机和高铁的撞击、金属加工等碰撞领域的主要关注点之一,而可靠有效的试验装置是解决问题的关键。因此本文研制了一种液压气动中应变率材料拉伸试验机,并给出了其组成、运行原理以及载荷、应变的测量方法。利用该试验机进行了奥氏体不锈钢和铝合金的中应变率拉伸试验,试验结果表明:该液压气动拉伸试验装置能有效进行材料的中应变率拉伸试验,实现了载荷和应变的有效测量。Assessing the dynamic mechanical properties of materials at intermediate strain rates(10^(0)s^(-1)~10^(2)s^(-1))is one of the major concerns in automobile crashes,foreign objects hitting planes and high-speed trains,metal-working and other impact fields.The reliable effective experimental device is the key to solve the problems of such testing.A hydro-pneumatic experimental machine for material tension test at intermediate strain rates was developed in this paper.The structures,operation principle,tensile load and strain measure methods were introduced in the following parts.The intermediate strain rate tensile tests of austenitic stainless steel and aluminum alloy were carried out by using the testing machine.The testing results indicate that the hydro-pneumatic tensile experimental machine can effectively carry out the intermediate strain rates material tensile test,and realize the effective measurement of load and strain.

关 键 词：动态拉伸性能 液压气动试验机 中应变率 动态力学性能 激光位移传感器 

分 类 号：O347.3[理学—固体力学]