衝撃圧接の接合性に及ぼすプロジェクタイル径の影響

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タイトル別名
  • Effect of Projectile Diameter on Weldability of Impact Welding
  • ショウゲキ アッセツ ノ セツゴウセイ ニ オヨボス プロジェクタイルケイ ノ エイキョウ

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説明

The impact welding has been carried out using the projectile with the diameter of 11 and 5 mm. The large projectile with the slenderness ratio L/d (L is Length and d is diameter) of 1 to 5 was welded to the stainless steel target. However, only the small projectile with the slenderness ratio less than 1.2 was welded to the same stainless steel target. In order to clarify the effect of the diameter of the projectile on the weldability, the temperature elevating process in the cylindrical projectile subjected to a longitudinal impact is evaluated numerically using LS-DYNA. The slenderness ratios used in the analysis were 1.0, 2.0 and 3.0. The coefficient of friction used in the analysis was 0.2. The constitutive equation used in the analysis was Cowper-Symonds type. Those numerical results indicated that the deformation mechanism of the projectile with the slenderness ratio less than 2.0 is different of that of the projectile with the slenderness ratio more than 2.0. It was clarified from those results that the temperature of the small projectile with the slenderness ratio less than 1.5 arrives at the bonding temperature by the difference of the deformation mechanism regardless of the small kinetic energy.

収録刊行物

  • 高温学会誌

    高温学会誌 34 (4), 178-185, 2008

    一般社団法人 スマートプロセス学会 （旧高温学会）

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