中文摘要：

提出了一种发动机连杆瞬态变形分析的耦合分析法。设计了一个3层径向基神经网络（RBFNN）,来重构活塞组件的二维油膜力,通过连杆的耦合方程,得到了连杆两端的耦合力,进而借助商用有限元软件ANSYS分析了发动机连杆的瞬态变形,同时该耦合方法的有效性被证实。仿真结果表明：在计入二维活塞组件油膜力作用下,连杆最大变形可提前或落后于压缩行程的下止点。

英文摘要：

A coupling analysis method is proposed for the transient deformation of engines＇ connecting-rods.A radial base function neural network（RBFNN） with three layers is designed to reconstruct the two-dimensional oil film forces.Forces acting on the two ends of the connecting-rod are achieved through coupling equations for it.Further,finite element analyses of transient deformation for the connecting-rod are made through software ANSYS.Meanwhile,the validity of the proposed method is demonstrated.Numerical results show the maximum deformation of a rotary connecting rod occurs before or behind the bottom dead center at compression stroke when the two-dimensional oil film forces are considered.