The Performance Analysis Of Diesel Crankshaft And The Research For Calculation Method Of Crankshaft Fatigue Strength

Crankshaft is the most important part of the diesel. Numerical simulation in crankshaft is a very significative research field. Since the shape, the boundary condition and the load of the crankshaft being very complex, to simulate the behavior of crankshaft well, a good computational method is very important.Main contents and conclusions in the paper are as follow:(1) By using the software AVL-EXCITE-Designer, the tools required for crank train design analysis used early are simulated. The dimensions of the crankshaft are reasonable through the result of the bearing analysis, strength calculation, torsion vibrations.(2) The dynamic response of crankshaft is calculated using the software AVL-EXCITE. Then get the result of the displacement, velocity, acceleration for crankshaft and the force for the bearing.(3) The 3-D model of the crankshaft is set up using the software Pro/E. Then the finite element model is set up through the software ANSYS. All these include mesh of the gridding, and the establishment of boundary conditions, loads and the restrictions. Analyzing the static property of the single-crank, the contour of stress in the result is true compared with the fact; analyzing the inflection of stress distribution when the crank web thickness and the total load are changed.(4) Analyzing the applications of the software AVL-EXCITE, ANSYS, AVL-EXCITE-Designer. It is mentioned the problem when the dynamic response for crankshaft and the finite element analysis are used.This paper analyzed the performance of diesel crankshaft and the research for calculation method of crankshaft fatigue strength. It has important references for the calculation of the crankshaft fatigue strength.