椭圆轨迹动感单车核心脚踏机构的设计与有限元分析

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中图分类号：TH122；TB18 文献标志码：A文章编号：1006-0316（2025）07-0072-09

doi ：10.3969/j.issn.1006-0316.2025.07.010

Abstract ∵ Based on the principles of human biomechanics， this paper introduces the eliptical motion trajectory of the elliptical machine into the design of the spinning bike，and proposes apedal mechanism with an eliptical trajectory for the spining bike that adopts a planetary gear transmission system. Through theoretical verification and finite element model simulation， this paper demonstrates that compared with the traditional spinning bike with a circular pedal trajectory， the mechanism designed in this paper can significantly reduce the knee pressure angle of the user under the same exercise intensity during use，thereby improving the transmision eficiency and reducing the impact on the knee joint. To verify the reliability of the mechanism， this paper constructs a multi-physical field coupling analysis model. Firstly，the dynamic load spectrum of key components is obtained by using the ANSYS rigid body dynamics module. Then， the strength check of important parts is conducted through the transient structure and static structure modules. This paper adopts the parametric modeling method to explore the nonlinear relationship between the radius of the key parts’relief groove and the maximum Mises stress，which provides a quantitative basis for subsequent structural optimization，offering areference and inspiration for the design of longevity of fitness facilities.

Key words ： eliptical trajectory ; spinning bike ; foot-pedal mechanism ; finite element analysis

动感单车运动因其较好的有氧运动效果与轻松愉快的运动氛围受到广大健身爱好者的青睐[1-2]。（剩余7235字）