Effect of clamping force on fretting fatigue behaviour of bolted assemblies: Case of couple steel–aluminium
Effect of clamping force on fretting fatigue behaviour of bolted assemblies: Case of couple steel–aluminium
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DOI：
10.1016/j.msea.2010.06.080
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发表时间：
2010-09
期刊：
影响因子：
6.4
通讯作者：
A. Benhamena;A. Talha;N. Benseddiq;A. Amrouche;G. Mesmacque;M. Benguediab
中科院分区：
文献类型：
--
作者：
A. Benhamena;A. Talha;N. Benseddiq;A. Amrouche;G. Mesmacque;M. Benguediab
微动磨损是螺栓连接的主要失效形式之一。振动和工作载荷的联合作用会在组件的接触表面上产生微动疲劳损伤，导致裂纹形核，进而导致结构断裂。接触压力或夹紧力、界面位移或相对滑移是控制微动磨损和微动疲劳的两个重要因素。本文介绍了夹紧力（拧紧力矩）对螺栓组件微动疲劳行为的影响。进行了微动疲劳试验和有限元模拟。随着接触力的增加，裂纹萌生位置由中心孔边缘向接触区自由边缘转移，微动疲劳寿命显著增加。一个很好的相关性被发现之间的有限元模拟和实验结果。
One of the principal failures of bolting assemblies is the fretting. The combination of vibration and service load can introduce the damage of fretting fatigue on the contact surfaces of the assembly which lead at a nucleation of crack and then the structure fracture. Contact pressure or clamping force and displacement at the interface or relative slip are two important factors which control the fretting wear and the fretting fatigue. This paper describes the effect of clamping force (tightening torque) on the fretting fatigue behaviour of bolted assemblies. Both fretting fatigue experiments and simulation with FEM were carried out. With the increase of contact force, the sites of cracks initiation changed from the edge of the central hole to the free edge of the contact zone and the fretting fatigue life increase dramatically. A good correlation was found between the FEM simulations and the experimental results.