基于能量中值等效原理的液压鼓胀毫微测试技术研究  

Research on Nano Measurement Technology of Hydraulic Bulging Based on Mean-Value Energy Equivalence

作　　者：向文欣 祁爽 刘晓坤[2] 范敏郁 宁方卯 蔡力勋[2] XIANG Wen-xin;QI Shuang;LIU Xiao-kun;FAN Min-yu;NING Fang-mao;CAI Li-xun(Taishan Nuclear Power Joint Venture Co.,Ltd,Jiangmen 529200,China;Southwest Jiaotong University,Chengdu 610031,China;Suzhou Nuclear Power Research Institute,Suzhou 215008,China)

机构地区：[1]台山核电合营有限公司,广东江门529200 [2]西南交通大学,成都610031 [3]苏州热工研究院有限公司,江苏苏州215008

出　　处：《装备环境工程》2022年第1期113-117,共5页Equipment Environmental Engineering

基　　金：国家重点研发计划(2017YFB0702200);江苏省基础研究计划(自然科学基金)面上项目(BK20181177);国家自然科学基金(U1867215);江苏省政策引导类计划(BZ2020057)。

摘　　要：目的基于液压鼓胀毫微测试技术获取材料单轴拉伸力学性能参数。方法借助能量中值等效原理和有限元辅助测试方法,提出了获取材料单轴拉伸力学性能的液压鼓胀毫微测试理论。结合小圆片试样液压鼓胀试验,获取了压水反应堆机组蒸汽发生器接管材料20MND5的屈服应力和应变强化指数。将其输入有限元,进而模拟小圆片试样液压鼓胀加载的全过程。结果有限元分析获得的液压鼓胀加载压力-位移曲线与试验获得的压力-位移曲线基本吻合。结论基于能量等效理论的液压鼓胀毫微测试技术可获得材料单轴拉伸力学性能参数,且无需进行大量试验,试验方法和试验原理相对简单,十分便于工程应用。The uniaxial tensile mechanical properties of materials were obtained based on the hydraulic bulging test technology.In this paper,based on mean-value energy equivalence and finite element aided testing method,a hydraulic bulging test technology is proposed to obtain the mechanical properties of materials under uniaxial tension.The yield stress and strain strengthening index of 20MnD5 pipe material in the Steam Generator(SG)was obtained based on the hydraulic bulging test of small wafer samples.It is input into the finite element to simulate the whole process of hydraulic bulging loading of small wafer sample.The pressure-displacement curve of hydraulic bulging obtained by finite element analysis is basically consistent with the pressure-displacement curve obtained by test.Based on the energy equivalence theory,the hydraulic bulging nanotechnology can obtain the mechanical property parameters of materials in uniaxial tension without a lot of tests,and the test method and principle are relatively simple,which is very convenient for engineering application.

关 键 词：能量等效理论 液压鼓胀测试 应力应变关系 有限元分析 

分 类 号：TG172[金属学及工艺—金属表面处理]