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arXiv physics/0306081physics.class-phphysics.ed-ph
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“线性”摆的非线性阻尼

Nonlinear Damping of the 'Linear' Pendulum

Randall D. Peters

摘要:

研究表明,典型的单摆动力学与教科书中简单的运动方程相差甚远。一个合理完整的阻尼模型除了常用的线性粘性表达式外,还必须使用非线性项。在某些情况下,用非线性阻尼代替假定的线性阻尼可能更合适。即使在例外情况下,所有的非线性可以忽略不计,它表明,粘性耗散涉及的微妙之处,可以导致巨大的错误时,忽略。

英文摘要:

This study shows that typical pendulum dynamics is far from the simple equation of motion presented in textbooks. A reasonably complete damping model must use nonlinear terms in addition to the common linear viscous expression. In some cases a nonlinear substitute for assumed linear damping may be more appropriate. Even for exceptional cases where all nonlinearity may be ignored, it is shown that viscous dissipation involves subtleties that can lead to huge errors when ignored.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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