logarithmic strains

Japanese: logarithmic strains(英語表記)logarithmicstrains
logarithmic strains

…In vertical strain, the distance between two points that give the reference dimension also changes with increasing load, so it is difficult to say that the amount of deformation from the original length divided by the original length represents the true strain at each load. Therefore, logarithmic strains are defined instead. In the vertical strain of the rod shown in Figure 1, if the length of the rod at a certain moment is l and the change in length at that time is dl , the increase in vertical strain at that time is dl / l . …

*Some of the terminology that mentions "logarithmic strains" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…垂直ひずみにおいては,加重の増加とともに基準寸法を与える2点間の距離も変化するため,単に元の長さからの変形量を元の長さで除したものが,各荷重における真のひずみを表すとはいいがたいからである。そこで,これに代えて対数ひずみlogarithmic strainsが定義される。図1に示す棒の縦ひずみにおいて,ある瞬時の棒の長さをl,そのときの長さの変化分をdlとすると,そのときの縦ひずみの増加分はdl/lである。…

※「logarithmic strains」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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