順応型Shifted Integration法による脆性骨組構造体の動的崩壊挙動の有限要素解析

概要

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The Adaptively Shifted Integration (ASI) technique, which produces the highest computational efficiency in the finite element analysis of framed structures including static and dynamic collapse problems, is applied to the explosive demolition analysis and seismic damage analysis of reinforced concrete buildings. By expressing an explosion or a fracture by a plastic hinge located at the exact position with a simultaneous release of resultant forces in the element, strong non-linear and discontinuous problems such as these can be easily analyzed even by the finite element code with the displacement form. By using the algorithms described in this paper, sufficiently reliable solutions for the practical use have been obtained in the explosive demolition and seismic damage analyses of a 5 stories-5 span reinforced concrete building. The present technique can be easily implemented with a minimum effort into the existing finite element codes utilizing the linear Timoshenko beam element.
社団法人日本船舶海洋工学会の論文