剪切间隙对紫铜薄板剪切加工影响的实验和仿真研究  

Study on experiment and simulation of the effect of shear clearances on the processing of copper sheet

作　　者：欧阳兵 李涛涛 王惠琼 李芳 OU Yang-bing;LI Tao-tao;WANG Hui-qiong;LI Fang(Pingxiang University,Pingxiang 337055 China)

机构地区：[1]萍乡学院机械电子工程学院,江西萍乡337055

出　　处：《新余学院学报》2023年第4期43-52,共10页Journal of Xinyu University

基　　金：江西省自然科学基金资助项目“大尺度线结构光视觉三维测量中的光条高质量成像技术研究”(20212BAB214047)。

摘　　要：对0.5 mm的T2紫铜板进行了剪切加工实验,并采用Deform-2D有限元软件进行了模拟仿真,研究了剪切间隙对铜板剪切断面形貌、边缘加工硬化及剪切过程中的剪切力的影响,实验结果和仿真结果有很好的一致性。结果发现,剪切间隙对剪切断面特征和加工硬化程度有直接影响,在相对间隙为8%时,具有最大的硬度值和最大的加工硬化影响深度;剪切断面形貌特征与加工硬化密切相关,加工硬化最大值出现在剪切带与断裂带的分界处;剪切间隙的变化影响了剪切力,在间隙较大时,加工硬化比较严重,裂纹更容易萌生和扩展,使剪切带高度和最大剪切力减小。T2 copper steel of 0.5 mm thickness was sheared to discuss the effects of shear clearance on shearing surface morphology,edge hardening,and shearing force.The shear processing was simulated by Deform-2D finite element software.Good agreement was obtained between simulation results and experimental data.The results show that the shear clearance directly affects the shearing surface morphology and the degree of work hardening,When the relative clearance(c/t)is 8%,the hardness value and depth of work hardening reach their maximum values.The shearing surface morphology is closely related to the work hardening,the maximum work hardening occurs at the border region between the shearing zone and the fracture zone.The change in shear clearance affects the shear force,When the clearance is large,the work hardening is more pronounced,the crack is more likely to propagate,so that the height of the shear zone and maximum shear force decrease.

关 键 词：紫铜板 剪切间隙 断面形貌 加工硬化 剪切力 

分 类 号：TG386.2[金属学及工艺—金属压力加工]