CAJ | 학술논문

在飞机结构设计中，非线性因素不可避免。本文以高超音速流下的，在俯仰自由度上含有立方非线性刚度的二元机翼为研究对象，采用平均法及颤振理论研究了超高速飞机机翼的非线性动力学行为，并通过数值计算验证了理论计算的正确性，给出了对比分析结果。
재비궤결구설계중，비선성인소불가피면。본문이고초음속류하적，재부앙자유도상함유립방비선성강도적이원궤익위연구대상，채용평균법급전진이론연구료초고속비궤궤익적비선성동역학행위，병통과수치계산험증료이론계산적정학성，급출료대비분석결과。
Non-linear factors cannot be avoided in the design of aircraft structures.In this paper,a two-degree-of-freedom airfoil and cubic stiffness nonlinearities in pitching degree-of-freedom operating in supersonic flight speed regimes has been analyzed.The averaging method and the theory of flutter were used to analyze the nonlin-ear dynamic system of the dualistic airfoil in the supersonic flow.Then the correctness of the theoretical calcula-tion was verified by numerical calculation,and the analysis result was given.