Nonlinear Contact Problem Research Of Diesel Engine Linkage Mechanism Of A New Type Of Diesel

Diesel engine is the main power. Further improvement of its design and manufacture is of importance to social development. The group of linkage is an important part of engine. The reliability and life of a diesel engine depends on the reliability and life of group of linkage in a good deal. Linkage group, as the main dynamic mechanism, has a very important position in a complete machine. The study which further research a deputy contacting state of movement on linkage group on the model of the diesel.Based on its structure characteristics, First of all, the study analyzed the force of linkage group. Made a simulate analysis of interference of small end, which obtains the maximum stress, contact press and distribution order in the different interferences. Through the contact problem of the linkage mechanism of research, it got the stress under two extreme situation, the contact state of the main contact surface and the contact stress and distribution order in the different interferences. The result provided the valuable basis to the choice of choosing the dimension. Avoid large of experiment, reduce design cost, shorten a construction and design cycle. Secondly,Pro/E of3d model of the linkage group was designed, and the contact finite element model on the linkage group was established using the universal finite element analysis software AN SYS12.1. Analyzed the contacting state of linkage group and in detail, the forces under two extreme situation and the contact pressure of the main contact surface. Last, By using AVL-EXCITE, a kind of professional software which simulates engine property,, the dynamic stress distribution in a cycle of linkage was obtained, and made a comparison with the analysis of nonlinear result, the result shows that the model is right and it provide a reference for the following exploit and design.