鉄道車両用アルミ合金製衝撃吸収構造を対象にした準静的圧壊実験と数値解析による基礎検討

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タイトル別名
  • Numerical Analysis and Quasi-static Compression Test on Energy Absorption Structure Made of Aluminium Alloys for Railway Vehicle
  • テツドウ シャリョウヨウ アルミ ゴウキンセイ ショウゲキ キュウシュウ コウゾウ オ タイショウ ニ シタ ジュンセイテキ アッカイ ジッケン ト スウチ カイセキ ニ ヨル キソ ケントウ

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This paper describes the result of basic study for development of energy absorption structure with pressure bulkhead for railway vehicle made of aluminium alloy. Under U. K. standard, quasi-static compression test using full size specimen and finite element analysis was carried out. In the experiment, the structure was fully compressed up to collapse length of 445 mm and the absorbed energy 1.11 MJ. Maximum reaction force is almost less than 3000 kN with some spiked loads that exceeds 3000 kN. In the simulation, four nodes shell element was used for modelling and explicit finite element analysis method was employed. And the simulation results have good agreement with the experiment results in collapse length and load relationship. As a result, we have confirmed that the structure for the specimen can meet U.K. standard and our simulation method can predict collapse characteristics with practically high accuracy.

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