运用仪器化压痕法的机械结合面力学性能研究

doi:10.16731/j.cnki.1671-3133.2018.03.024

现代制造工程 ›› 2018, Vol. 450 ›› Issue (3): 130-137.doi: 10.16731/j.cnki.1671-3133.2018.03.024

• 仪器仪表/检测/监控 • 上一篇下一篇

运用仪器化压痕法的机械结合面力学性能研究

张琳琳^1,2,李晓阳²,黄惠茹²,王翔宇²

1 河北科技大学机械工程学院,石家庄 050018;
2 北京工业大学机械工程与应用电子技术学院,北京 100124

收稿日期:2017-03-10 出版日期:2018-03-20 发布日期:2018-07-19
作者简介:张琳琳,博士,讲师,主要研究方向为机械强度,工程力学。李晓阳,教授,博士生导师,主要研究方向为流体力学、工程力学及可靠性工程。黄惠茹,博士研究生。王翔宇,硕士研究生。 E-mail:zhang6952@163.com
基金资助:
河北科技大学博士科研启动基金项目(1181310)

Research on the mechanical performance of joint interfaces using the instrumented indentation method

Zhang Linlin^1,2,Li Xiaoyang²,Huang Huiru²,Wang Xiangyu²

1 School of Mechanical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;
2 College of Mechanical and Applied Electronics Technology,Beijing University of Technology, Beijing 100124,China

Received:2017-03-10 Online:2018-03-20 Published:2018-07-19

摘要/Abstract

摘要： 针对平面机械结合面,通过试验研究了不同表面粗糙度的结合面试件在循环压缩载荷作用下的力学行为,并基于仪器化压痕法(Instrumented Indentertion Test,IIT)通过剥层方式测试了压痕深度和塑性变形功沿着结合面层深的分布规律,探讨了结合面模型的应力-应变关系及其在循环压缩载荷作用下的接触机理。与连续体对比,结合面的存在使得试样的应力-应变关系呈非线性。采用仪器化压痕法检测出结合面表层下方发生了塑性变形及塑性累积,形成塑性区和不均匀应力区。在循环载荷工况下,塑性变形增大,并引起不均匀应力区增大,且结合面表面的粗糙度值越大,压应力和塑性变形的增量越大。揭示了结合面的非线性特性和塑性变形机理,为结合面刚度理论研究奠定了试验基础。

关键词: 结合面, 表面粗糙度, 仪器化压痕技术, 压痕深度, 塑性变形功

Abstract: The mechanical performances of joint interfaces which with different surface roughness are studied through cyclic compression experiments.And the distributions of the maximum indentation depths and plastic works along the layer depths are tested based on the Instrumented Indentation Test(IIT).In addition,the stress strain relationship and the contact mechanism of joint interfaces under cyclic compression loading is explored.Compared with the continuum model,the joint interface makes the stress-strain relationship nonlinear.The plastic deformation and plastic accumulation are detected occur below the interface based on IIT,and the plastic zone and uneven stress zone formed.Under cycling loads,both the plastic deformation and the uneven stress zone increase.It also demonstrate that the compressive stress increments and the plastic deformation increments increase with the increasing of surface roughness.Reveals the nonlinear characteristics and the plastic deformation mechanism of the mechanical joint interface,which lays experimental basis for the joint interface stiffness theory.

Key words: joint interface, surface roughness, instrument indentertion test, indentation depth, plastic work

中图分类号:

TG405

张琳琳,李晓阳,黄惠茹,王翔宇. 运用仪器化压痕法的机械结合面力学性能研究[J]. 现代制造工程, 2018, 450(3): 130-137.

Zhang Linlin,Li Xiaoyang,Huang Huiru,Wang Xiangyu. Research on the mechanical performance of joint interfaces using the instrumented indentation method[J]. Modern Manufacturing Engineering, 2018, 450(3): 130-137.

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运用仪器化压痕法的机械结合面力学性能研究

Research on the mechanical performance of joint interfaces using the instrumented indentation method

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