The nonlinear natural thermal vibration of a rectangular orthotropic plate on a nonlinearfoundation was studied.
研究了非线性地基上正交异性矩形板的非线性固有热振动。
2
Because of the nonlinearfoundation of nonlinear vibration systems, the linear controller used in nonlinear vibration active control based on traditional control theory can not work very effectively.
由于非线性振动系统的非线性本质，基于传统控制理论的线性控制器用于非线性振动控制效果不佳。
3
The result showed that two - aniline - two schiffs bases has bigger nonlinear optical coefficient. It provides the theory foundation for go further research on good nonlinear optical materials.