基于接触理论的螺栓联接接触面力学特性研究

doi:10.3969/j.issn.1000-1093.2015.05.027

兵工学报 ›› 2015, Vol. 36 ›› Issue (5): 946-952.doi: 10.3969/j.issn.1000-1093.2015.05.027

基于接触理论的螺栓联接接触面力学特性研究

章伊华¹，林丹益¹， YANG Guo-yu²

（1.宁波大红鹰学院汽车CAE应用技术研究所，浙江宁波 315175； 2.EASi Engineering，Detroit 48201，Michigan，United States）

收稿日期:2013-12-19 修回日期:2013-12-19 上线日期:2015-07-09
通讯作者: 章伊华 E-mail:576175872@qq.com
作者简介:章伊华（1962—），男，副研究员
基金资助:
浙江省自然科学基金项目(Y12E050062)

Research on Mechanical Properties of the Contact Surfaces in Bolt Joints

ZHANG Yi-hua¹， LIN Dan-yi¹， YANG Guo-yu²

(1.Institute of Automobile CAE Applied Technology，Ningbo Dahongying University，Ningbo 315175，Zhejiang，China;2EASi Engineering，Detroit 48201，Michigan，United States)

Received:2013-12-19 Revised:2013-12-19 Online:2015-07-09
Contact: ZHANG Yi-hua E-mail:576175872@qq.com

摘要/Abstract

摘要： 运用多微凸体粗糙接触表面由弹性、弹塑性至塑性变形转化过程的连续光滑可导原理，论证了载荷作用下接触面接触强度及实际接触面之间的连续性和区域性。用混合单元法创建实际螺栓结构接触压力模型，求解出螺栓结构的实际接触面积与接触压应力分布。对比超声波实验数据，有限元分析（FEA）结果与超声波实验结果相吻合，验证了模型的正确性和有效性。通过系列模型，分析压应力沿螺栓方向的传递作用，证明螺栓联接结构接触应力在环形区域内分布的连续性，并探讨了改变预紧力和结构几何参数对螺栓联接接触强度、接触应力范围的影响规律。

关键词: 固体力学, 接触面力学, 接触强度, 螺栓联接, 预紧力, 接触压应力分布

Abstract: The continuous smooth derivable principle of micro-convex asperity contact surface within the elastic, elastic-plastic and plastic contact deformations is applied to demonstrate the contact strength and the continuity and regional disparity of the practical contact surfaces under loading. A bolt structure model is established using the mixed-element method, and the practical contact area and the contact stress distribution are solved. The predicted results from finite element analysis（FEA）are highly correlated with the ones obtained from ultrasonic physical tests. The correctness and validity of the model are verified. The transmission effect of stress along the bolt joint direction is investigated through series of models, the continuity of the contact stress of the bolt joint in the annular region is further proved, and the effect laws of changing the pretightening force and structure geometric parameters on the bolt joint contact strength and the range of contact stress are discussed.

Key words: solid mechanics, mechanics of contact surface, contact strength, bolt joint, pretightening force, contact stress distribution

中图分类号:

O343
O344

章伊华，林丹益， YANG Guo-yu. 基于接触理论的螺栓联接接触面力学特性研究[J]. 兵工学报, 2015, 36(5): 946-952.

ZHANG Yi-hua， LIN Dan-yi， YANG Guo-yu. Research on Mechanical Properties of the Contact Surfaces in Bolt Joints[J]. Acta Armamentarii, 2015, 36(5): 946-952.

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基于接触理论的螺栓联接接触面力学特性研究

Research on Mechanical Properties of the Contact Surfaces in Bolt Joints

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