爆発成形のスプリングバックについて

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  • On the Springback of Explosive Forming
  • バクハツ セイケイ ノ スプリングバック ニ ツイテ

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According to the many papers, explosive forming exhibits unusual features in as much that there is a relative absence of springback owing to the very high pressure of shockwave. The authors measured the springback of explosive bending of brass and aluminium sheets which were tried under the relatively low pressure of blackpowder explosion, ana found that the springback was also less than the statical bending test. The following factors are deemed to be the reasons for the relative absence on springback of explosive forming : (1) Peening effect owing to the residual strain of work hardening caused by the impact to die surface. (2) Local bending over which occurs in the forming process of explosive bending.

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