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| Optimization of Crankshaft Structure based on Monte-Carlo Method |
| Received:January 29, 2018 Revised:May 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.05.006 |
| KeyWord:crankshaft FEM Monte-Carlo method optimization |
| Author | Institution |
| ZHU Yi-sheng |
1. The 723 Institute of CSIC, Yangzhou , China; 2. China Shipbuilding Industry Environment and Reliability Test Centre for Electric and Electronic Equipment, Yangzhou , Chin |
| LIU Yu-shi |
1. The 723 Institute of CSIC, Yangzhou , China; 2. China Shipbuilding Industry Environment and Reliability Test Centre for Electric and Electronic Equipment, Yangzhou , Chin |
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| Abstract: |
| Objective To reduce crankshaft mass and optimize the crankshaft of a V-type 16-cylinder diesel engine. Method First, the load was applied to the finite element model of the single crank and boundary conditions according to the actual working environment of the diesel engine to obtain the value and position of maximum stress and displacement. Second, a 2D finite element model of the vertical interface of the crankshaft center was established; and then the maximum stress and displacement were calculated with ANSYS under equivalent loading conditions. The results were compared with the 3D model to verify that the 2D mesh model was reliable. Finally, based on Monte-Carlo sampling method, main dimension of the unit crankshaft was optimized with ANSYS PDS module. Results When the main journal radius was 150mm, the crankpin radius was 125mm, and the fillet radius was 4.5 mm; the unit crankshaft mass was reduced by 3.37 kg and the entire crankshaft mass was reduced by 26.99 kg. The purpose of optimization was achieved. Conclusion The rationality of replacing 3D model with 2D model instead and the feasibility of using Monte Carlo method to optimize the structure are proved, providing guidance for the future crankshaft optimization. |
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