数値解析による斜め割り連接棒大端部の強度評価

概要

論文の詳細を見る
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.
1998-01-25