温度场下功能梯度圆锥壳-环板振动特性分析OA北大核心CSTPCD

Herein,the vibration characteristics of a functionally graded material conical shell-annular plate com-bined tructure under a temperature field are analyzed on the basis of the first-order shear deformation theory and Rayleigh-Ritz method.The displacement variables of the combined structure are represented using the spectro-geometric method,and a vibration analysis model considering temperature-related material parameters is estab-lished.The boundary conditions are simulated by introducing artificial boundary springs.In the numerical exam-ples,the accuracy of the vibration analysis model is verified by comparing it with literature solutions and finite ele-ment solutions.The effects of parameters such as size,material,temperature and connection position on the vibra-tion characteristics of the combined structure are then analyzed.The results show that the fundamental frequency of the combined structure increases with the increase in thickness and decreases with the increase in power law index,semiapex angle,and temperature field parameters.It also presents a nonsingle variation trend as the inner diameter and connection position of the annular plate change.