Study on Measures against Spot Weld Fracture of Ultra-High-Strength Steel Frame (Third Report)

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  • 超高強度鋼板を適用した車体フレームのスポット溶接部破断対策の検討（第3報）
  • 超高強度鋼板を適用した車体フレームのスポット溶接部破断対策の検討(第3報)溶接部の応力低減構造の検討
  • チョウコウキョウド コウバン オ テキヨウ シタ シャタイ フレーム ノ スポット ヨウセツブハダンタイサク ノ ケントウ(ダイ3ポウ)ヨウセツブ ノ オウリョク テイゲン コウゾウ ノ ケントウ
  • ―溶接部の応力低減構造の検討－
  • -Study on Structure for Reducing Stress of Spot Weld-

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Abstract

Improvements of both crash performance and light weight are required in automobile structural members. In order to expand the application of ultra high strength steels to automobile members, it is important to improve the reliability of spot welded joints. In this study, the structure around the welded flange was examined for the purpose of reducing the stress of the spot welded joints. As a result, it is shown that the stress of the spot welded joints can be reduced by suppressing the deformation of the flange. In addition, the crash performance was improved due to the structural change of flange.

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