【摘要】 研究了简支梁在两个激振力作用下的组合谐波响应。建立了梁振动的Duffing方程,采用经典的L-P法对其进行求解,分析了强迫振动的组合谐波共振的成因、类型和特点。由得到的频率一振幅响应曲线,研究了激励强度、频率和阻尼对响应振幅的影响。更多还原

【Abstract】 The combination resonance of a simple supported beam under two excitation forces was studied. The Duffing equation was derived firstly, then it was solved by using classical L-P method, and the cause, style and feature of combination resonance induced by forced vibration were analyzed. Finally, various frequency-amplitude response curves are given to show the effect of the amplitude, frequency and viscosity of inspiration on response amplitude.更多还原