论文部分内容阅读
考虑变惯量影响的曲轴扭转振动是流变线性(rheolinear)振动系统的一个典型实例。五十多年来,人们曾多次提出这个老课题,并进行了研究。均因受到种种局限而未能就此课题得出一个比较明确公认的结论。本文从几个方面比较系统地回顾和分析了这个课题。并按■er 提出的数学模型编制了电算程序和算例。最后,文章就 Draminsky 提出的“次共振”(Secondary Resonance)和“准干扰”(Quasi—Excitations)的概念以及“假阻尼”问题提出讨论意见。
Crankshaft torsional vibration, which takes into account the effect of variable inertia, is a typical example of a rheolinear vibration system. For more than 50 years, people have repeatedly raised this old topic and conducted a study. Due to various limitations, they failed to come to a clear and generally accepted conclusion on this issue. This article reviews and analyzes this subject systematically from several aspects. According to ■ er mathematical model proposed by the computer program and examples. Finally, the paper presents a discussion on Draminsky’s concepts of “Secondary Resonance” and “Quasi-Excitations” as well as “pseudo-damping”.