The 490 diesel engine crankshaft was modeled by 3-D CAD software named Solidworks.Its stress-strain during a whole working progress was simulated by FEA software ANSYS.Through the simulation results,we can get the following laws that the stress concentrates at the fillet surfaces between the connecting rod neck journal and main axle neck journal;the deformation value at two ends is less than the middle position.The maximum bending value appears at the joint between connecting rod neck journal and weight bal...