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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精密与特种加工教育部重点实验室 副主任； 中国光整加工专业委员会 主任委员； 中国生产工程学会 常务理事； 中国国际磨粒加工技术学会（ICAT）常务理事
性别：男
毕业院校：东北工学院
学位：博士
所在单位：机械工程学院
学科：机械制造及其自动化
办公地点：机械工程学院知方楼7185室
联系方式：0411-84706138 gaohang@dlut.edu.cn
电子邮箱：gaohang@dlut.edu.cn
An enhanced spring-mass model for stiffness prediction in single-lap composite joints with considering assembly gap and gap shimming
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论文类型：期刊论文
发表时间：2018-03-01
发表刊物：COMPOSITE STRUCTURES
收录刊物：SCIE、EI
卷号：187
页面范围：18-26
ISSN号：0263-8223
关键字：Spring-mass model; Joint stiffness; Assembly gap; Gap shimming
摘要：An enhanced spring-mass stiffness model was proposed, which was based on the supposition that the transverse shear stress under preload satisfies conical and spherical envelope, to predict the stiffness of the single-lap single-bolt composite joint with considering assembly gap and gap shimming. The validation experiments were conducted for different configurations. It shows that the analytical results were all in good agreement with the experimental results. Meanwhile, experimentally validated finite element model was used as an assistant validation in consideration of convenience and cost saving. The presented analytical model was then used for parameter studies, including gap size, gap radius and shim thickness. The major conclusions are: 1) as gap size increases 0.1 mm, the shear stiffness decreases about 1.1%; 2) the shear stiffness quickly becomes zero when the gap radius exceeds the boundary of the highly stressed portion; 3) shim thickness has much greater influence on the bolt stiffness than on the shear stiffness.