應用離散元素法與多體動力學於齒輪傳動系統動力分析模型之建立;Dynamics Modeling of Gear Transmission System Based on Discrete Element Method and Multi-body Dynamics

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题名:	應用離散元素法與多體動力學於齒輪傳動系統動力分析模型之建立;Dynamics Modeling of Gear Transmission System Based on Discrete Element Method and Multi-body Dynamics
作者:	費一航;Fei, Yi-Hang
贡献者:	機械工程學系在職專班
关键词:	齒輪傳動系統;多體動力學;離散元素法;有限軸段理論;時變接觸剛度;阻尼顆粒;振動;動態響應;Gear transmission system;multi-body dynamics;discrete element method;finite segment method;time-varying contact stiffness;damping particles;vibration;dynamic response
日期:	2021-01-26
上传时间:	2021-03-18 18:22:45 (UTC+8)
出版者:	國立中央大學
摘要:	齒輪傳動系統正朝著高速、重負載和高精度方向發展，對其動態性能要求越來越高，而在傳動過程中本身的時變接觸剛度、加工誤差與轉軸變形等也會對系統動態特性產生影響，結構的振動、噪音和運轉穩定性越來越受到業界關注。顆粒阻尼技術(Particle Damping Technology, PDT)是一種被動減振方法，透過顆粒間、顆粒與結構體腔壁間的非彈性碰撞和摩擦作用耗能。本文透過多體系統動力學(Multi-body Dynamics, MBD)與離散元素法(Discrete Element Method, DEM)雙向耦合分析方法，考慮齒輪嚙合時之接觸剛度，以有限軸段理論(Finite Segment Method)研究傳動軸彈性變形與阻尼顆粒對於齒輪系統動態響應的影響，研究結果不僅證實有限軸段理論對於模擬轉軸之彈性變形可行且有效，亦證實阻尼顆粒能有效抑制齒輪傳動時之振動。;Gear transmission system is developing towards high speed, heavy load and high precision, the requirement of its dynamic performance is increasingly higher. In the transmission process, the time-varying contact stiffness between gears, machining errors of mechanical parts, and deformation will affect the dynamic characteristics of the system, including vibration, noise and operational stability, which are concerned by the industry. Particle damping technology (PDT) is a passive vibration-damping method used to dissipate the vibration energy by collision and friction among particles and particles to walls of a structure. In this study, a two-way coupled analysis model of multi-body dynamics (MBD) and discrete element method (DEM) has established to investigate the dynamic responses of a gear transmission system considering elastic deformation of the shafts and damping particles with the time-varying contact stiffness and the Huston finite segment method. The results have verified that the finite segment method is feasible and effective for simulating the shaft deformation and prove that the damping particles can effectively suppress the system vibration during the operation process.
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