基于图像处理方法的大变形测量系统实验分析  

Large Deformation Measurement System Based on Image Processing Method

作　　者：王昊[1] 刘占芳[1] WANG Hao;LIU Zhan-fang(School of Aeronautics and Astronautics, Chongqing University, Chongqing 400044, China)

机构地区：[1]重庆大学航空航天学院,重庆400044

出　　处：《应用能源技术》2022年第4期9-14,共6页Applied Energy Technology

摘　　要：连续介质力学理论中,发生变形时需要同时考虑变形体的平动变形和旋转变形,平动变形的测量已不是问题,然而现有的方法并不能很好的描述变形中的转动。为此开发了一套基于非接触测量方法的超弹性材料大变形测量设备,文章对装置进行了初步验证,以便进行后续试验。该方法通过测量得到的变形梯度基础上,进行极分解计算变形的应变等参数。In continuum mechanics theory,translational deformation and rotation deformation of deformed body should be considered simultaneously when deformation occurs.The measurement of translational deformation is no longer a problem,but the existing methods can not describe the rotation in deformation well.Therefore,a set of measuring equipment for large deformation of hyperelastic materials based on non-contact measuring method is developed.Based on the measured deformation gradient,the deformation parameters such as strain are calculated by polar decomposition.

关 键 词：非接触测量 变形梯度 极分解 大变形 

分 类 号：O33[理学—一般力学与力学基础]