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剛塑性有限要素法によるスラブエッジング圧延の解析

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.14 (1982) No.1

剛塑性有限要素法によるスラブエッジング圧延の解析 Rigid -Plastic Analysis of Slab Edge Rolling by FEM

二 階 堂 英 幸(Hideyuki Nikaido) 直井 孝之(Takayuki Naoi) 柴田 克已(Katsumi Shibata) 小坂田 宏造(Kozo Osakada) 森 謙一郎(Ken-ichiro Mori)

要旨 : 圧縮性材料の塑性力学を基礎とした剛塑性有限要素法を用いて,スラブエッジング圧延の 三次元解析を行った。解析では,被圧延材での加工硬化およびひずみ速度依存性も考慮し ている。計算結果を,プラスティシンを用いた 6 パス圧延実験結果と比較したところ良い 一致がみられた。さらに圧延スケジュールや,ロール径,初期スラブ形状を変えて計算を 行い,ドッグボーン形状相違や,荷重,トルク,消費エネルギーについて検討した。 Synopsis :

A three-dimensional deformation in slab edge rolling was analyzed using FEM, based on the upper bound theorem and constitutive equation of the meterial with compressibility in plastic deformation, and the effect on the deformation by the strain rate and workhardening characteristics of plasticine was examined. Under various conditions of pass schedule, roll diameter and slab width, edge rolling was analyzed,thus making clear the non-steady slab deformation, and the so-called fish-tail formings at the top and tail of the slab, as well as changes of load, and torque and energy consumption in rolling.

(c)JFE Steel Corporation, 2003

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