押出法ポリスチレンフォームを用いた橋梁構造物の設計開発実習

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  • 関口 明生
    木更津工業高等専門学校 電子制御工学科
  • 伊藤 操
    木更津工業高等専門学校 電子制御工学科

書誌事項

タイトル別名
  • Training of Bridge Structure Design using Extruded Polystyrene Foam
  • オシダシホウ ポリスチレンフォーム オ モチイタ キョウリョウ コウゾウブツ ノ セッケイ カイハツ ジッシュウ

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抄録

<p>To educate students about mechanical property of material, we updated a content of practical work. Students learn material mechanics by three points bend of simple beams, and experience to take an idea into a product by making their own model bridge. We used extruded polystyrene (XPS) foam as material. Elastic modulus and Poisson's ratio of the foam was respectively 20 N/mm2 and 0.37 as obtained via tensile tests. It is also revealed that the foam is not strictly isotropic. In the practical work, the relationship between fracture strength of a XPS bridge in three points bend and its shape was discussed for each student's bridge. Based on its questionnaire results, we consider that most students did it with enjoyment.</p>

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