Institute of Space and Aeronautical Science,University of Tokyo
雑誌名
ISAS report/Institute of Space and Aeronautical Science,University of Tokyo
巻
40
号
1
ページ
1 - 28
発行年
1975-01
抄録（英）
On the basis of nonlinear theory, the axisymmetric dynamic behavior of viscoelastic shallow spherical shells is analyzed. Two types of loading condition, that is, step and graded loadings, are considered and a linear model is used to describe the viscoelastic characteristics of materials. The governing equations derived by the authors are solved numerically, and the critical load and the effects of viscoelasticity and loading speed on the dynamic behavior are discussed. It is pointed out that buckling phenomena must be analyzed paying attention to the role of time, since dynamic, static and creep bucklings are related with one another as a function of time. And a clear definition of dynamic buckling is proposed. The theoretical predictions show a good agreement with experimental results. From the present results, the quasi-static buckling load is also obtained immediately. The dynamic behavior of elastic shells obtained by the present procedure coincides excellently with those reported so far.
Dynamic Behavior of Viscoelastic Shallow Spherical Shells
SA2401179.pdf
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