三维打印GP1不锈钢动态剪切力学性能研究  

Study on Dynamic Shear Mechanical Property of 3D Printing GP1 Stainless Steel

作　　者：任豪 周刚毅[1,2] 董新龙[1,2] 付应乾[1] 舒旗 Ren Hao;Zhou Gangyi;Dong Xinlong

机构地区：[1]宁波大学冲击与安全工程教育部重点实验室,浙江宁波315211 [2]宁波大学机械工程与力学学院,浙江宁波315211

出　　处：《机械制造》2023年第11期54-59,共6页Machinery

基　　金：冲击与安全工程教育部重点实验室开放课题(编号:CJ202013)。

摘　　要：采用三维打印设备制备GP1不锈钢扁平帽型剪切试样,利用分离式霍普金森压杆技术加载,结合数字图像相关法开展三维打印GP1不锈钢动态剪切力学性能研究。研究结果表明,动态剪切试验可以获得有效的材料高应变率动态剪切应力剪切应变曲线,三维打印GP1不锈钢剪切加载状态下,应力应变曲线具有一定的应变率效应,动态屈服强度与对数应变率成线性关系,应变率敏感因数为186。GP1 stainless steel flat cap type shear specimen was prepared by 3D printing equipment,loaded by separate Hopkinson pressure bar technology,and combined with digital image correlation method to carry out study on the dynamic shear mechanical property of 3D printing GP1 stainless steel.The results show that the dynamic shear test can obtain an effective dynamic shear stress shear strain curve of material with high strain rate.Under the shear loading state,the stress strain curve of 3D printing GP1 stainless steel has a certain strain rate effect,the dynamic yield strength has a linear relationship with the logarithmic strain rate,and the strain rate sensitivity factor is 186.

关 键 词：三维打印 不锈钢 动态剪切 力学性能 研究 

分 类 号：TH140.7[一般工业技术—材料科学与工程]