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Deformation Behavior and Crack Formation in Two Neighboring Holes Perforated in Engineering Sheet Materials under Tension

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 32 Issue 2 Page 285-292
published_at 1982
KJ00000156417.pdf
[fulltext] 732 KB
Title
薄板材に穿いた近接 2 円孔の変形挙動および亀裂発生について
Deformation Behavior and Crack Formation in Two Neighboring Holes Perforated in Engineering Sheet Materials under Tension
Creators Takimoto Akio
Creators Harada Hisaaki
Creators Tsukaana Norio
Source Identifiers
To obtain basic information on the mechanical mechanism of ductile fracture, deformation behavior and crack formation in two neighboring holes perforated in sheet materials have been investigated. Experiments have been performed with variations in mechanical factors such as a relative inter-hole distance (ξ/d), an arranged angle of two holes (φ) and the applied plastic strain, and in material ones of an mean grain size and a strain hardening exponent in copper and SS-41. Holes introduced in a close distance to each other are deformed quite oddly under tension, depending mainly on the arranged angle. The deformed configuration of them is able to be expressed by an approximated ellipse with supplements of intrusion and/or protrusion. The linear distance connecting centers of two holes varies with plastic strain and is given in two different definitions of a geometrical center and a shifted original cross one. Cracking at and around two holes has happened in both ways of protrude and intrude cracking which may result in the linking mechanism of two neighboring holes depending on the variables studied.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1982
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部