摘要
临界转速及不平衡响应分析是采用转子动力学研究转子系统动态特性的基础。以斜盘式轴向柱塞泵-电机组转子系统为研究对象,通过Riccati传递矩阵法、Prohl传递矩阵法和有限元法分别对转子系统进行了临界转速的计算,结果表明电机轴及联轴器的存在降低了轴向柱塞泵-电机组转子系统的临界转速,并证明了Riccati传递矩阵法在计算大型转子系统的优势;此外,通过模拟流量脉动及侧向径向压力引起的转子不平衡状态,得到转子系统的不平衡响应特性,结果可表明,流量脉动及侧向径向压力主要激发了转子系统的二阶固有频率,其不平衡响应最剧烈处位于转子系统两端。
Critical speed and unbalance response analysis are the foundation of the research of rotor system based on rotor dynamics. The swash-plate axial piston pump with turbine rotor is researched; the critical speed is obtained by the Riccati transfer matrix method, Prohl transfer matrix method and the ANSYS finite element analysis method respectively. The results show the turbine rotor with the coupling can reduce the critical speed of the rotor system and the Riccati transfer matrix method has an advantage in calculating large rotor system. Besides, the unbalance of the rotor system caused by flow pulsation and radial and lateral pressure is simulated, and the unbalanced response of rotor system is obtained. It shows that the flow pulsation and radial and lateral pressure mainly inspire the second-order natural frequency of the rotor system, and the most dramatic vibration occurs at the ends of the rotor system.
出处
《液压与气动》
北大核心
2017年第3期49-56,共8页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(50575196
4020445)
国家重点基础研究发展计划(973计划)(2014CB046405)
关键词
轴向柱塞泵-电机组转子系统
临界转速
不平衡响应
Riccati传递矩阵法
有限元分析
turbine shaft rotor system of swash-plate axial piston pump, critical speed, unbalance response, Riccati transfer matrix method, finite element analysis
