【摘要】 对于谐波激励下干摩擦振荡的非粘结振动的稳态周期解,本文在D en H artog和H K Hong的工作基础上,弱化了导出结论所需要的假设,得到了解的对称性,给出了最大速度的理论解答。分析表明,最大速度可表示为放大因子B、固有频率ωn、激振力幅值作用下的静变形p0/k三者的乘积。并用数值分析验证了最大速度的解答。更多还原

【Abstract】 The paper investigated the steady state of non-sticking motion for a single degree of freedom system that is under harmonic excitation with dry friction,based on the work of Den Hartog and H K Hong,the unnecessary hypotheses are dropped.The expression of maximum velocity of the non-sticking motion is presented,which is the product of the magnification factor B,the natural cycle frequency ω_n and the static displacement of the amplitude of excitation force p₀/k.Numerical simulations validate the theoretical results of maximum velocity.Some discussions about the magnification factor are presented.The phase lags of maximum displacement and velocity are also discussed.更多还原