The eigenvalue problem for a thin linearly elastic shell, of thickness 2c, clamped along its lateral surface is considered. Under the geometric assumption on the middle surface of the shell that the space of inextensi...The eigenvalue problem for a thin linearly elastic shell, of thickness 2c, clamped along its lateral surface is considered. Under the geometric assumption on the middle surface of the shell that the space of inextensional displacements is non-trivial, the authors obtain, as e - 0, the eigenvalue problem for the two-dimensional "flexural shell" model if the dimension of the space is infinite. If the space is finite dimensional, the limits of the eigenvalues could belong to the spectra of both flexural and membrane shells. The method consists of rescaling the variables and studying the problem over a fixed domain. The principal difficulty lies in obtaining suitable a priori estimates for the scaled eigenvalues.展开更多
基金Supported by Scientific Research Foundation of Hubei Provincial Department of Education(D20184301)the Hubei Key Laboratory of Applied Mathematics(Hubei University).
文摘The eigenvalue problem for a thin linearly elastic shell, of thickness 2c, clamped along its lateral surface is considered. Under the geometric assumption on the middle surface of the shell that the space of inextensional displacements is non-trivial, the authors obtain, as e - 0, the eigenvalue problem for the two-dimensional "flexural shell" model if the dimension of the space is infinite. If the space is finite dimensional, the limits of the eigenvalues could belong to the spectra of both flexural and membrane shells. The method consists of rescaling the variables and studying the problem over a fixed domain. The principal difficulty lies in obtaining suitable a priori estimates for the scaled eigenvalues.
