Research on Numerical Calculation of Normal Contact Stiffness of Steel-BFPC Joint Surfaces

doi:10.3969/j.issn.1004-132X.2022.07.008

China Mechanical Engineering ›› 2022, Vol. 33 ›› Issue (07): 818-824.DOI: 10.3969/j.issn.1004-132X.2022.07.008

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Research on Numerical Calculation of Normal Contact Stiffness of Steel-BFPC Joint Surfaces

XU Ping1;XU Shuting1;SHEN Jiaxing1,2;YU Yinghua1

1.School of Mechanical Engineering,Liaoning Technical University,Fuxin,Liaoning,123000
2.Research Institute of Technology and Equipment for the Exploitation and Utilization of Mineral Resources,Liaoning Technical University,Fuxin,Liaoning,123000

Online:2022-04-10 Published:2022-05-04

钢-玄武岩纤维树脂混凝土结合面法向接触刚度数值计算研究

徐平1;徐戍廷1;沈佳兴1,2;于英华1

1.辽宁工程技术大学机械工程学院，阜新，123000
2.辽宁工程技术大学矿产资源开发利用技术及装备研究院，阜新，123000

通讯作者: 徐戍廷（通信作者），男，1999年生，硕士研究生。研究方向为先进制造系统与技术。E-mail：18041364374@ 163.com。
作者简介:徐平，男，1964年生，教授、博士研究生导师。研究方向为现代机械设计理论与方法、先进制造系统与技术。E-mail：lnxuping@ 163.com。
基金资助:
国家自然科学基金(52005238，51375219);
辽宁省教育厅项目(LJ2019JL030);
辽宁省博士科研启动基金(2020-BS-256)

Abstract

Abstract: In order to solve the problems that the maximum contact area in fractal contact theory was difficult to calculate accurately, which would lead to the difficulty in obtaining actual contact area of joint surfaces effectively, a calculation method for actual contact area of joint surfaces was established based on discrete numerical calculation method, and a new calculation method for contact stiffness of steel-BFPC joint surfaces was established by combining the method with the theoretical contact stiffness model of joint surfaces. The contact stiffnesses of steel-BFPC joint surfaces components under five kinds of preloads were measured through modal experiments. Experimental results were compared with the theoretical calculation ones, and the relative errors between them are less than 6.0%.

Key words: steel-basalt fiber polymer concrete(BFPC) joint surface, discrete method, actual contact area, contact stiffness, fractal contact theory

摘要： 为解决分形接触理论中最大接触面积难以准确计算导致结合面实际接触面积难以有效获取的问题，基于离散化数值计算方法建立了一种结合面实际接触面积的计算方法，并将该方法与结合面接触刚度理论模型相结合，建立了一种新的钢玄武岩纤维树脂混凝土（BFPC）结合面接触刚度计算方法。通过模态实验对五种预载荷下的钢BFPC结合面组件的接触刚度进行了测量，将实验结果与理论计算结果对比分析，确定了二者的相对误差均小于6.0%。

关键词: 钢玄武岩纤维树脂混凝土结合面, 离散法, 实际接触面积, 接触刚度, 分形接触理论

CLC Number:

TP123

XU Ping, XU Shuting, SHEN Jiaxing, YU Yinghua. Research on Numerical Calculation of Normal Contact Stiffness of Steel-BFPC Joint Surfaces[J]. China Mechanical Engineering, 2022, 33(07): 818-824.

徐平, 徐戍廷, 沈佳兴, 于英华. 钢-玄武岩纤维树脂混凝土结合面法向接触刚度数值计算研究[J]. 中国机械工程, 2022, 33(07): 818-824.

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Research on Numerical Calculation of Normal Contact Stiffness of Steel-BFPC Joint Surfaces

钢-玄武岩纤维树脂混凝土结合面法向接触刚度数值计算研究

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