基于数字化齿面的弧齿锥齿轮柔性多体接触动力学分析

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Abstract Based on spiral bevel gears’ local synthesis method, gear tooth surface accurate spatial digital coordinates were calculated to build quad patch finite element grid model of spiral bevel gears.Based on gear tooth surface quad patch contact block model, dynamic contact searching calculation of high-precision digital actual gear tooth surfaces was realized using the global search method for bounding boxes and the local search method of node-target surface based on master and slave surface.The quad patch element center external normal vector was used to calculate gear tooth surface’s contact deformation from node to target surface.The penalty function method was used to calculate dynamic contact force of gear tooth surfaces.The dynamic analysis method was proposed for spiral bevel gears with multi-flexible body and multi-interface dynamic contact to calculate and analyze spiral bevel gears’ transmission errors, dynamic contact forces, equivalent constraint forces, tooth edge dynamic contact and maximum stresses.The results showed that spiral bevel gear transmission errors, dynamic contact forces, equivalent constraint forces may be underestimated if neglecting multi-flexible body and multi-interface dynamic contact features; the new method can be used to better simulate spiral bevel gear transmission’s dynamic contact characteristics and provide a theoretical reference for dynamic design of spiral bevel gear transmission systems.

Key words： Spiral bevel gear contact dynamics tooth edge contact flexible multibody dynamics FEM

Received: 01 September 2017 Published: 28 January 2019

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	YAO Tingqiang YAO Long WANG Xuejun WANG Lihua

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YAO Tingqiang YAO Long WANG Xuejun WANG Lihua. Flexible multibody contact dynamic analysis for spiral bevel gears based on digital tooth surface[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(3): 80-88.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I3/80

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