スペース・エンジニアリング・コンファレンス講演論文集
Online ISSN : 2424-3191
ISSN-L : 0918-9238
セッションID: S2
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アルミ合金製タンクの破壊挙動予測に向けたき裂進展要素試験と構造解析
*赤井 恒太藤本 圭一郎波多 英寛西元 美希飯塚 宜行
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Physics model-based quantitative safety analysis method should be established both for meeting the strict flight safety requirement and maximize the mission flexibility of the flagship liquid rockets. Tank destruction model of the crack propagation triggered by the pre-generated longitudinal slit hole has been developed, based on the dynamic explicit FEM analysis, and the crack propagation test methods for the model validation. The crack propagation test method for the flat panel with and without rib structures was proposed and demonstrated to obtain the valid data for the investigation of the destruction mechanisms and the model validation. Computed crack propagation speed was agreed well with the experimental data, thus the test method was demonstrated for the material model parameter identifications.

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