周期外乱を受ける偏平アーチの動座屈

概要

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The purpose of this paper is to study dynamic buckling behaviors and dynamic characteristics of shallow arches subjected to cyclic loads, aiming to analysis the global stability for rotational shells. A great deal of effort has been made on the dynamic buckling. What seem to be lacking, however, is the problem of dynamic buckling on nonconservative system. Therefore, on this paper we investigate basic characteristics of dynamic behaviors for shallow arches subjected to cyclic loads. In the numerical research the following results were obtained. 1) Backbone curves have two types on phenomena, softening and hardening types. 2) The discontinuous point appears on the backbone curve of softening type and jump phenomena occur on this point. 3) There are three types of jump phenomena in response curves, one of which means the dynamic buckling behavior. 4) The dynamic buckling loads drastically decrease to be affected by the dynamic resonance on symmetrical and asymmetrical modes.
社団法人日本建築学会の論文
1995-03-30