一种电子拉伸试验机刚度的计算方法
A Method to Calculate the Stiffness of Electronic Tensile Testing Machine
摘 要
通过分析电子拉伸试验机在受力时整体与各部件的变化情况，归纳总结出了一种可以简便计算试验机刚度的方法，并对Zwick Z400与Zwick Z250型电子拉伸试验机进行了刚度计算。结果表明：通过对试验机各部件的刚度整合分析，可得到丝杠弹性模量与横截面积的乘积以及试验机其余部件的刚度，从而计算出横梁位于不同位置时试验机的总刚度。
刚度
横梁位置
electronic tensile testing machine
stiffness
position of crossbeam
Abstract
Through analyzing the changes of whole and parts of the electronic tensile testing machine under stress, a simple method for calculating the stiffness of testing machine was summarized, and stiffness calculation of Zwick Z400 and Zwick Z250 tensile testing machine were carried out. The results show that through stiffness integration analysis of each part of the testing machine, product of elastic modulus and sectional area of leading screw and stiffness of the rest parts of testing machine can be obtained to calculate the total stiffness of testing machine when the crossbeam was in different positions.
中图分类号 TH871 DOI 10.11973/lhjy-wl201912006
所属栏目 试验技术与方法
基金项目
收稿日期 2018/11/12
修改稿日期
网络出版日期
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备注程柄午(1989-),男,助理工程师,从事金属材料机械性能检测工作,chengbingwu2321614@163.com
引用该论文: CHENG Bingwu,XU Hejun,HUANG Xudong,ZHENG Cheng. A Method to Calculate the Stiffness of Electronic Tensile Testing Machine[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2019, 55(12): 845～849
程柄午,许鹤君,黄旭东,郑程. 一种电子拉伸试验机刚度的计算方法[J]. 理化检验－物理分册, 2019, 55(12): 845～849
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参考文献
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【2】HERMANN B. Calculation of the crosshead velocity in mm/min required to achieve a specified stress rate in MPa·s-1 or an estimated strain rate in s-1[J]. Zwick Materials Testing,2015(1):1-9.
【3】蔺海荣. 电子万能试验机的刚度分析和刚度测定[J]. 试验技术与试验机,1992,32(5):21-23.
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