Journal of Welding and Joining

  • 제21권6호
  • /
  • Pages.55-63
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  • 2003
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
권호 표지

동적하중 하에서의 강도적 불균질부를 갖는 용접이음재의 강도 및 파괴 특성

Characteristics of Strength and Fracture in Strength Mismatched Joint by Dynamic Loading

  • ;
  • 望月正人 (大阪大學 大學院 工學硏究科) ;
  • 大細充 (大阪大學 大學院 工學硏究科) ;
  • ;
  • 豊田政男 (大阪大學 大學院 工學硏究科)
  • 발행 : 2003.10.01
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초록

Welded joint generally has heterogeneity of strength, material, and fracture toughness and it is important to understand the characteristics of material strength and fracture of welded joint considering heterogeneous effect. Characteristics of strength and fracture of an undermatched joint under dynamic loading was studied by round-bar tension tests and thermal elastic-plastic analyses in this paper. The strength and fracture of the undermatched joints should be evaluated based on the effects of the strain rate and the temperature including temperature rise during the dynamic loading. The differences of fracture characteristics like such as ductile-to-brittle transition behavior are well precisely explained from the stress-strain distribution obtained by numerical analysis.

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