A computational model of two stage double helical tooth planetary gear set is employed to built the lateraltorsional coupling dynamic governing equations. Base on the dynamic equation, the free vibration properties ...A computational model of two stage double helical tooth planetary gear set is employed to built the lateraltorsional coupling dynamic governing equations. Base on the dynamic equation, the free vibration properties of the system with unequally spaced planets and stars are analyzed. The vibration modes are classified into three types: star mode, planet mode, and coupling mode. For each of the modes, the relation between inherent frequency and vibration amplitude is investigated in detail by the eigenvalue and mode characteristics.展开更多
In a bid to establish a strong scientific and technological (S&T) innovation base in China, the State S&T leading group, the top government organ for S&T issues, gave the go-ahead, on June 6,1998, for the ...In a bid to establish a strong scientific and technological (S&T) innovation base in China, the State S&T leading group, the top government organ for S&T issues, gave the go-ahead, on June 6,1998, for the Chinese Academy of Sciences (CAS) to introduce a pilot project for the national knowledge innovation program (KIP). The objective of the pilot project is to re-structure the Academy into three major bases:展开更多
基金Sponsored by the Programme of Introducing Talents of Discipline to Universities (the 111 Project)(Grant No. B07018)
文摘A computational model of two stage double helical tooth planetary gear set is employed to built the lateraltorsional coupling dynamic governing equations. Base on the dynamic equation, the free vibration properties of the system with unequally spaced planets and stars are analyzed. The vibration modes are classified into three types: star mode, planet mode, and coupling mode. For each of the modes, the relation between inherent frequency and vibration amplitude is investigated in detail by the eigenvalue and mode characteristics.
文摘In a bid to establish a strong scientific and technological (S&T) innovation base in China, the State S&T leading group, the top government organ for S&T issues, gave the go-ahead, on June 6,1998, for the Chinese Academy of Sciences (CAS) to introduce a pilot project for the national knowledge innovation program (KIP). The objective of the pilot project is to re-structure the Academy into three major bases:
