Simulation of heavy-duty engine based on flexible multi-body dynamics

[摘要] For heavy-duty diesel engine, the structural flexibility of the crankshaft and the engine block has an important influence on the dynamic characteristics of the engine. The deformation and modal resonance generated at work must be considered. Therefore, the multi-body dynamic analysis of the crankshaft and the body structure is based on the flexible body model of the crankshaft and the body. In this paper diesel engine dynamics behaviour is analysed based on flexible multi-body method. The dynamic substructure condensation method is used to reduce the he shaft and the bearing block, obtain the flexible body model of the crankshaft and the body, reduce the computational solution scale, and improve the computational efficiency.

[发布机构] Beijing Institute of Control Engineering, Beijing; 100190, China^1;Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology, Beijing; 100094, China^2

[效力级别] 机械制造

[关键词] Computational solutions;Dynamic characteristics;Dynamic substructure;Flexible multi bodies;Flexible multi-body dynamics;Heavy-duty diesel engine;Multi-body dynamic analysis;Structural flexibilities