摘要
基于虚拟制造方法建立了滚剃工艺的精确圆柱直齿轮三维几何模型,并进行线外啮合冲击动态仿真分析,得到了可靠的齿轮动应力变化规律。仿真结果表明:冲击加载时,不同工况下齿根两侧最大动应力的出现位置呈对称分布;冲击载荷下,齿根最大应力大于ISO标准静强度理论值,最大应力位置比ISO标准确定的最危险截面位置偏高;冲击载荷峰值相同时,冲击时间越短,产生的动应力越大。
Established precise three-dimensional model of spur gear based on hob-shaving process with virtual manufacturing approach. Carried out dynamic simulation analysis based on corner contact. Obtained the dynamic stress variation rule for the gear under impact loads. The simulation results show that the position of maximum dynamic stress at root of tooth under different conditions appears on both sides symmetrically. The dynamic stress is bigger than the theoretic static strength under impact loads in ISO standard, and the position of maximum dynamic stress is on the higher side of the dangerous section determined according to ISO standard. The dynamic stress caused by the engaging-in impact is the maximum under different conditions, and the shorter the impact time is, the larger the dynamic stress is.
出处
《振动与冲击》
EI
CSCD
北大核心
2009年第8期138-143,共6页
Journal of Vibration and Shock
基金
国家自然科学基金(50875263)
国家重点基础研究发展计划(973计划)(2005CB724100)
