有限要素法による紙の応力‐ひずみ挙動の解析

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タイトル別名
  • Stress-Strain Analysis of Paper by Finite Element Method
  • ユウゲン ヨウソホウ ニ ヨル カミ ノ オウリョク ヒズミ キョドウ ノ カ

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抄録

The mechanical behavior of relatively low grammage spots in paper sheets during deformation has become more critical because of the recent production trials of lightweight paper and the tendency towards more efficient use of wood resources. The computer simulation technique using the finite element method is discussed from the view point of establishing the basic simulation method enabling us to analyse an approximate estimation of the load-elongation behavior of the individual spots in paper as well as that of the entire paper sheet.<BR>The simulation was based upon the incremental strain method carried out starting from approximately one tenth of the failure load, followed by 13-15 additional loading steps. The additional load increment of each step decreased by 0.04 of the initial load.<BR>The output of the simulation in the analysis fitted well with the input data when equation (6) was adopted in the estimation of the total strain up to the i-th incremental step necessary for choosing the elastic modulus of paper for the calculation of stress and strain of the i-th step.<BR>The trials were performed successfully for various kinds of paper, such as bleached softwood handmade sheet, filter paper, restraint free handmade sheet, and commercial unbleached kraft paper.<BR>It is concluded finally that the method is useful to analyse mechanical behavior of paper when taking mass variation into account.

収録刊行物

  • 紙パ技協誌

    紙パ技協誌 38 (5), 545-552, 1984

    紙パルプ技術協会

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