外接多角形による降伏関数簡易同定法の実験的検証と板成形解析への応用

DOI Web Site Web Site 被引用文献2件 参考文献16件
  • 瀧澤 英男
    日本工業大学基幹工学部機械工学科
  • 児玉 渉平
    日本工業大学大学院工学研究科機械システム工学専攻

書誌事項

タイトル別名
  • Experimental Validation of Simplified Identification Method of Yield Function Using Circumscribing Polygon of Yield Locus and Its Application for Analysis of Sheet Metal Forming
  • ガイセツ タカッケイ ニ ヨル コウフク カンスウ カンイ ドウテイホウ ノ ジッケンテキ ケンショウ ト イタ セイケイ カイセキ エ ノ オウヨウ

この論文をさがす

抄録

<p>In this study, a method to identify the yield surface by three types of simplified material tests is proposed. The uniaxial tensile test, hydraulic bulge test, and plane strain tensile test are used in this method. A polygon circumscribing the equal plastic work contour can be defined by assuming the associated flow rule on the direction of the plastic strain rate. The parameters of anisotropic yield function are identified as a smooth curve inscribed in this polygon. This paper describes the details of these material testing methods. The yield surface of the cold-rolled steel sheet (SPCE) is identified by the proposed method and modeled with Yld2000-2d yield function. The model is compared to the stress points which are measured by the biaxial stress tests using cruciform specimen. Both yield loci agree well. Moreover, the yield function identified by the proposed method is applied to two types of simple sheet metal forming problems, the hole expansion test and deep-drawing of cylindrical cup. The results of finite element analysis are compared with the experimental results in both problems. The thickness strain on the hole edge in the hole expansion test and the ear height of the deep-drawn cup are evaluated. The results of the analysis using the modeled yield function agree with the experimental results qualitatively.</p>

収録刊行物

  • 鉄と鋼

    鉄と鋼 106 (5), 272-280, 2020

    一般社団法人 日本鉄鋼協会

被引用文献 (2)*注記

もっと見る

参考文献 (16)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ