共查询到20条相似文献,搜索用时 234 毫秒
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利用三维建模软件对轮边减速器行星齿轮结构建立了几何模型,并根据重型载货汽车轮边减速器行星齿轮结构以及受载特点,建立了行星齿轮结构三维有限元模型,利用显式动力学软件对行星齿轮结构进行动力学仿真分析,探讨了结构在运动过程中所受到的力及产生最大应力的部位与应力的变化趋势,设计分析所得到的结论可为行星齿轮结构的设计和分析提供依... 相似文献
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为了比较圆弧齿线圆柱齿轮与传统齿轮传动性能的优劣,根据ZQA50型渐开线斜齿轮减速器结构参数,对圆弧齿线圆柱齿轮减速器进行了结构设计,并建立了ZQA50型渐开线斜齿轮减速器和圆弧齿线圆柱齿轮减速器三维模型。利用UG/Open grip,二次开发了圆弧齿线圆柱齿轮三维模型;通过圆弧齿线齿条和毛坯之间的运动,完成了齿轮的切制,进而利用有限元分析了两种减速器传动性能的优劣。研究结果表明:圆弧齿线圆柱齿轮接触区域在齿宽中截面附近,重合度大;圆弧齿线圆柱齿轮接触最大应力比传统齿轮最大应力小;传动轴上应力的大小满足强度设计要求,即圆弧齿线圆柱齿轮传动性能比传统齿轮优越。 相似文献
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应用虚拟样机技术可以大幅缩短新产品开发周期和降低开发成本,荻得高性能、最优化的产品.在I-DEAS软件中.对某行星齿轮减速器进行参数化三维实体造型,研究了人字齿轮实体建模及装配的关键点,并利用I-DEAS与ADAMS之间的接口技术,在ADAMS中建立了行星齿轮减速器虚拟样机,对其进行了运动学仿真分析,结果表明,所建立的三维模型及虚拟样机与实际相符.最后,指出了值得连一步研究的方向. 相似文献
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以某履带二级减速器的从动齿轮为研究对象,利用SolidWorks软件对齿轮进行三维建模。通过更改文件保存类型,将模型导入ANSYS Workbench软件并对其进行网格划分,建立三维有限元模型。应用动力学模态分析得到齿轮的各阶模态固有频率和振型,为减速器动力学分析和优化设计提供必要的理论依据。 相似文献
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Planetary gear systems have been widely used in transportation, construction, metallurgy, petroleum, aviation and other industrial fields. Under the same condition of power transmission, they have a more compact structure than ordinary gear train. However, some critical parts, such as sun gear, planet gear and ring gear often suffer from fatigue and wear under the conditions of high speed and heavy load. For reliability research, in order to predict the fatigue probability life of planetary gear system, detailed kinematic and mechanical analysis for a planetary gear system is firstly completed. Meanwhile, a gear bending fatigue test is carried out at a stress level to obtain the strength information of specific gears. Then, a life distribution transformation model is established according to the order statistics theory. Transformation process is that, the life distribution of test gear is transformed to that of single tooth, and then the life distribution of single tooth can be effectively transformed to that of the planetary gear system. In addition, the effectiveness of the transformation model is finally verified by a processing method with random censoring data. 相似文献
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齿轮刚度及制造误差对多平行轴转子系统动力学性能的影响 总被引:1,自引:0,他引:1
分析了具有斜齿圆柱齿轮传动的多平行轴转子系统,在统一的坐标系下,建立了系统的动力学模型,考虑了系统的弯扭耦合、陀螺力矩及滑动轴承的支承刚度和阻尼。计算了系统的固有频率、动态响应及幅频特性,重点分析了齿轮的刚度、阻尼和制造误差对多平行轴转子系统动力学性能的影响 相似文献
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星型齿轮系统定常吸引子共存现象的研究 总被引:2,自引:0,他引:2
建立了星型齿轮系统的非线性动力学计算模型,并肜数值方法进行了求解,研究了4自由度有间隙的非线性星型齿轮系统稳态响应的定常吸引子共问题,分别对在3种参数情况下各自在不同的初值条件下得到的共存的简谐,非谐单周期,次谐波和准周期稳态响应做了比较,通过分析系统各齿轮副的动态啮合力,区分了在齿轮系统中因间隙而导致的齿轮副啮合过程中出现的无冲击状态,单边冲击状态,双边冲击状态,并分析了由于星轮载荷不均匀分布状态和均匀分布状态分别对应的系统稳态响应的共存现象。 相似文献
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Jin-Rae Cho Ki-Yong Jeong Min-Ho Park Dae-Suk Shin O-Kaung Lim No-Gil Park 《Journal of Mechanical Science and Technology》2013,27(7):2053-2059
Gearbox for wind turbine must be designed to have the sufficient structural strength to sustain the extreme torque and forces transferred from rotor blades. Traditionally, the structural analysis of gearbox has been made using the simplified FEM models in which the contacts between gear teeth are replaced with the equivalent forces acting on the gear shafts, because the consideration of the detailed internal gear transmission system requires a huge number of degrees of freedom. But, the traditional method can neither accurately reflect the gear transmission forces, nor is it preferable for the dynamic analysis. In order to solve these problems, a structural analysis method considering the tooth contact of internal gear system is introduced in this paper. The actual tooth contact between a pair of gears is modeled with spring elements and the spring constants are determined through the stiffness analysis of gear teeth. The current analysis technique is justified through the comparison with the simplified gear system model and applied to the structural analysis of a 2-stage differentialtype gearbox for wind turbine. 相似文献
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星型内齿行星传动的动力学计算与效率分析 总被引:2,自引:2,他引:0
针对三轴式星型内齿行星传动,以变形协调方程为基础建立了行星轴承的动力学分析模型并进行了效率分析,结合内齿平动的啮合效率,给出了三轴式星型内齿行星传动的效率计算公式,并以某种型号的星型内齿行星减速器为例进行了受力计算和效率计算. 相似文献