| 摘要: |
| 目的 根据摆线轮模态分析计算结果对摆线轮进行结构优化。方法 通过Pro/E 对RV 减速器摆线轮进行三维造型，将完成的实体模型导入Ansys 中，建立动力学仿真分析模型，进行有限元模态分析，得出摆线轮在自由边界与约束边界下的固有特性。将模态计算结果与整机模型固有频率进行比较，根据振型分析摆线轮最大刚体位移的位置，进行结构优化设计并验证。结果 自由边界下的第7, 8 阶与约束边界下的第2, 3 阶固有频率均与整机相接近，容易引起整机共振的固有频率段为844.7?1163.7 Hz；摆线轮最大刚体位移的位置为贯穿孔外侧的摆线齿廓，自由和约束边界下的最大位移分别为44.349, 59.484mm；结构优化后的最大位移分别为37.581, 44.066 mm。结论 摆线轮齿廓处为结构的薄弱环节，结构优化后的摆线轮模型在固有特性以及固有振型上都达到了有效改善效果。 |
| 关键词: RV 减速器 摆线轮 模态分析 结构优化 |
| DOI： |
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| 基金项目:国家科技支撑计划（2015BAF16B02）；国家自然科学基金（51575236） |
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| Modal Analysis and Structure Optimization of Cycloid Gear in RV Reducer |
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WANG Kui-kui1,2, LI Ke1,2, SU Lei1,2, YUAN Bing3
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1.Jiangnan University a. Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology;2.b. School of Mechanical Engineering, Wuxi 214122, China;3.SAIC GM Dongyue Automobile Co., Ltd., Yantai 264006, China
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| Abstract: |
| The work aims to optimize the structure of cycloid wheel according to its calculation results of modal analysis. Pro/E was applied to establish the 3D model for cycloid gear of RV reducer. The completed entity model was imported into ANSYS to build dynamic simulation analysis model for the finite element modal analysis, thus obtaining the inherent characteristics of cycloid gear under free and constrained boundaries. The results of the modal calculation were compared with the prototype's natural frequency. The position of the maximum rigid body displacement of the cycloid gear was analyzed according to the vibration mode, and the structure optimization was designed and verified. The natural frequencies of the 7th and 8th orders under free boundary and the 2nd and 3rd orders under constrained boundary were close to those of the complete machine, and the natural frequency range was 844.7~1163.7 Hz, which was easy to cause resonance. The position of the largest rigid body displacement of cycloid gear was the cycloid gear profile outside of the through hole, and the maximum displacements under the free and constrained boundaries were respectively 44.349 mm and 59.484 mm; after structure optimization, the maximum displacements were respectively 37.581 mm and 44.066 mm. The cycloid gear profile is the weak link of the structure, and the inherent characteristics and natural vibration mode of the optimized cycloid gear model are effectively improved. |
| Key words: RV reducer cycloid gear modal analysis structure optimization |
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