Strength Calculation And Simulation Of 8L250 Series Diesel Engine Crankshaft

Diesel engine crankshaft is the one of the most important part.It's damage may lead to the damage of other parts,especially,with the enhanced engine and technology development,so that the crankshaft increasingly harsh working conditions. Crankshaft strength analysis and research has been on going work.In this paper,the following aspects of the 8L250 diesel engine crankshaft are discussed based on the reading of a large number of literature:1) After the force analysis on the crankshaft,the crankshaft is calculated every 5°crank angle in the dynamic results. And check the strength of the crankshaft according to CCS classification standard of steel ship.2) Establish the overall three-dimensional,single crank model with Pro-E,and through interface program between Pro-E and ANSYS-workbench software,import the model into ANSYS-workbench software to generate finite element model.3) Do a static analysis of the crankshaft in ANSYS-workbench software.and from boundary conditions in support of the crankshaft discussed the stress state in terms of rigid and non rigid support,and make acomparative analysis. After getting the maximum force of the crankshaft,calculate fatigue strength of crankshaft according to CCS norms.4) Do contact analysis of finite element of the crankshaft by using ANSYS-workbench software.Get the force and deformation under support of the crankshaft bearings. And compared with the previous analysis.5)Through the strength analysis of the finite element,find the maximum stress point,and under the premise of without affecting the basic structure of the crankshaft an optimization improvements to reduce the stress concentration are made,and execute the specific methods for quantitative analysis.So that the crankshaft achieve to the best result of optimization.