The Finite Element Analysis And Multidisciplinary Design Optimization Of Connecting Rod Based On ISIGHT

Traditional structural optimization method can not combine the prepotent parts of every subject, and also have some uncertainties which can affect the design results. It's the signle subject optimization analytical technology are mainly used in the the existing situation of the optimization design reaserch of the diesel engine connecting rod, and the Multidisciplinary Design Optimization-MDO is relatively shortly in used.The thought and purpose of the MDO is completely consistent with the request of the modern diesel engine design, which could improve the quality of the products,lower the cost,reduce the design cycle-time. Therefore, there is a impressive prospect of using the MDO method in the design work of the diesel engine and other relative components, and also which holds a important practical significance and high academic value.In this thesis, the connecting rod of the 16PA6STC diesel engine which is developed by the SEMT is taken to the object of study, the structural linear finite element theory is used in the analysis of the stress in the most compressive and the most stretching working situation, and on the basis of this combined with the MDO theory to operate a structural optimization to the connecting rod. The MDO software ISIGHT is used to integrate three extensively used engineer design softwares, including Pro/Engineer,ANSYS,Nastran, to complete the structural optimization work on the condition of restrain the stress and modal of the connecting rod, explore the application of the MDO design method in the diesel engine field, offer a reference for the further improvement design study.