Finite Element Simulation of the Strength of the Big End of Diagonally Split Connecting Rod.
Finite Element Simulation of the Strength of the Big End of Diagonally Split Connecting Rod.
复制标题
斜剖连杆大端强度有限元模拟。
DOI：
10.1299/kikaia.64.104
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Y. Senoh
中科院分区：
文献类型：
--
作者：
T. Fukuoka;Y. Senoh
斜剖连杆广泛用于中速柴油机，其目的是减小连杆的宽度以便于组装和拆卸。因此，剪切力发生沿着之间的界面杆和连杆盖。因此，在柄和帽的配合界面处加工出具有类似螺纹形状的所谓锯齿，以支撑剪切力。有时报告说，由于锯齿周围的应力集中、疲劳或微动磨损，在那里观察到失效。采用平面应变接触有限元法分析了螺栓大端的力学行为，为提高计算精度，采用选择性减缩积分法（SRI）对螺栓模型的单元矩阵进行积分，并讨论了点火力和惯性力对螺栓大端力学行为的影响。
The diagonally split connecting rod is widely used for medium-speed diesel engines for the purpose of reducing its width to easily perform assembling and disassembling. Thus, shearing forces are occurred along the interface between the shank and the cap of connecting rod. Consequently, so called serrations, which have similar shapes of screw threads, are machined at the mating interfaces of shank and cap to support the shearing force. It is sometimes reported that failures are observed there because of stress concentrations, fatigue or fretting around the serration. In this paper, the mechanical behaviors of the big end are analyzed by FEM as a plain strain contact problem, where selective reduced integration (SRI) scheme is introduced for integrating element matrices of bolt model for better accuracy, and the effects of both ignition and inertia forces are discussed.