Asymptomatic
发表于 2025-3-25 04:29:39
http://reply.papertrans.cn/83/8256/825548/825548_21.png
使尴尬
发表于 2025-3-25 11:10:35
Introductionplex constructions undesirable vibration can arise because of inevitable clearances. Alternatively, there is a class of machines, called ., where vibration is the main working process. To make sense of these complicated processes, it is desirable to know the basics of modern oscillation theory.
inclusive
发表于 2025-3-25 14:20:58
Natural oscillations in systems with many degrees of freedom. Normal oscillationsnlinear systems this is not necessarily so. For continuous systems having an infinitely large number of degrees of freedom the number of normal oscillations is infinite, but in the case of bounded systems it is denumerable.
antiquated
发表于 2025-3-25 16:37:50
http://reply.papertrans.cn/83/8256/825548/825548_24.png
diathermy
发表于 2025-3-25 23:29:06
http://reply.papertrans.cn/83/8256/825548/825548_25.png
Ornithologist
发表于 2025-3-26 02:32:53
http://reply.papertrans.cn/83/8256/825548/825548_26.png
追逐
发表于 2025-3-26 07:07:11
http://reply.papertrans.cn/83/8256/825548/825548_27.png
肌肉
发表于 2025-3-26 09:41:12
1612-1384 ing experts in the area.Includes modern topics such as synchIn this book the modern theory of both regular and chaotic nonlinear oscillations is set out, primarily, as applied to mechanical problems. The material is presented in a nontraditional manner with emphasis on the new results of the theory
Harness
发表于 2025-3-26 16:19:23
The main analytical methods of studies of nonlinear oscillations in near-conservative systemsLyapunov , laying the mathematical foundations for this theory. Although, it should be noted that a direct application of these mathematical methods to oscillation theory as such occurred much later, primarily owing to the works of Andronov .
PLUMP
发表于 2025-3-26 20:42:52
Examples of natural oscillations in systems with one degree of freedomddition, oscillations executed in systems with slowly time-varying parameters we call natural too. In principle, such systems contain energy sources but these sources are not responsible for the excitation of oscillations.