摘要
采用基于数字滤波技术的数学模拟方法和 ITO 积分的综合嫁接方法计算二自由度结构随机振动的响应。结果表明,ITO 积分综合方法具有较高的精度和计算效率,同时与确定性激励下的结果类似,系统的非线性耦合部分对响应有重要影响。本文为随机非线性振动的计算提供了有用的思想和方法。
To calculate the nonlinear responses of a TDOF structure sub- jected to random excitation,the simulation method and the ITO's Calculus- Cure-Simulation method are used.The results show that the later method is more efficient,and the nonlinear coupling terms in the equations of the system have very significant influences to the response of the system.
关键词
非线性
随机振动
ITO积分
结构振动
nonlinear random vibration
modulated white noise
simulation
ITO's calculus-cum-simulation method
