| The paper analyzes the static property and dynamic characteristics of the crankshaft using the 4DW93-84E3 diesel engine of WUXI DIESEL ENGINE CO. Ltd. Furthermore the improved design and compare of the different scheme of the crankshaft is carried through using the experimental optimal technology on test. Then the remarkable factors under the test target are gotten. All these provide science basis and feasible plans for the structure design of the crankshaft. Many contents and conclusions in the paper are as follow:1: Firstly, the 3D model of the assembly were set up with the software Pro/E. Secondly, the model was meshed by software Hypermesh, thus ensure the quality of the mesh and the contradiction between the mesh quantity and calculation accuracy was solved properly. Finally, the model was analyzed with ANSYS;2: The correctness and feasibility of the FE model's boundary conditions are validated by analyzing the static property of the single-crank and the whole crankshaft. The contour of stress in the result is true compared with the fact. The safety coefficient of the crankshaft is calculated by the traditional test method;3: In the improved design of the crankshaft, the influences of the main journal diameter, crankpin diameter, vertical distance of upper of unloading trough to the crankshaft centerline, axial depth of the unloading trough, slot fillet radius of unloading trough, angle of the upper of the unloading trough;4: The natural frequency of the original crankshaft is calculated. The model frequency and mode shape in the result are close to the test results. The dynamic characteristics of the optimized crankshaft are analyzed in the same way. Also the dynamic characteristics of them are compared;5:Both SOLIDE45 and SOLIDE92 are used during the process of analysis. The two elements of accuracy were discussed, for the future of the finite element analysis provides a useful guide;...
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