基于准动态校准的Φ3.5×8.75mm柱形铜柱力学性能仿真分析  

Mechanical Property Simulation Analysis of Φ3.5×8.75mm Copper Cylinder Based on Quasi-Dynamic Calibration

作　　者：张子潇[1] 孔德仁[1] 王芳[1] 杨丽侠 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]中国兵器工业204所,陕西西安710065

出　　处：《测试技术学报》2016年第4期299-305,共7页Journal of Test and Measurement Technology

基　　金：国防计量基础预研资助项目

摘　　要：为了改善铜柱测压中静标体系的缺陷,我国曾设计了采用准动态校准的Φ3.5×8.75mm铜柱测压器材,而在实际使用过程中该型铜柱测压系统在高压测试中出现了一些问题,其结构设计需要进行优化,这必然涉及到对该型铜柱测压范围的界定与预压值的选择.应用非线性动力学软件LS-DYNA对铜柱测压系统在不同预压与温度下的力学性能行了仿真分析,得到了预压与温度对铜柱变形量的影响,研究成果为Φ3.5×8.75mm柱形铜柱测压器的优化提供了依据以及参考.TheΦ3.5×8.75 mm copper cylinder pressure-measuring elements have been designed which is based on quasi-Dynamic calibration technique in order to improve the defects of the static calibration system in the pressure-measuring using copper cylinder.But there are problems with this model of copper crusher gauge in high pressure measurement.So the structure design of the copper crusher gauge should be optimized that involves the defining of the measuring range and the preloading of the copper cylinder.By the nonlinear finite element analysis software ANSYS/LS-DYNA,the mechanical property of the copper cylinder pressure measuring system in different preloading and temperature situations is simulated to analyze the influence of preloading and temperature to the deformation amount.The research results provide reference to the optimal design ofΦ3.5×8.75 mm copper cylinder crusher gauges.

关 键 词：塑性测压 准动态校准 力学性能分析 压力测量 有限元分析 

分 类 号：O344.3[理学—固体力学]