Distribution of Second Moments of Area of a Wooden Hoe and the Structural Rationality

• Kubo Mitsunori

  Graduate School of Chiba University

• Kitamura Yukiko

  Graduate School of Chiba University

• Tauchi Takatoshi

  Graduate School of Chiba University

• Terauchi Fumio

  Graduate School of Chiba University

Bibliographic Information

Other Title

• エングワ（踏鋤）の断面二次モーメント分布とその力学的合理性
• - Structural Rationalities of MINGU(2)
• ―民具の形に見る力学的合理性（2)

Abstract

A historical wooden hoe which has been possessed by Tsunan-machi Historical Museum of Nakauonuma-gun, Niigata was morphologically analyzed in order to extract dynamic characteristics and the structural rationality. The hoe which is called as ENGUWA is one of the government-designated historical folklore assets. In this study, the shape of the hoe was measured by a 3D-digitizer and the cross-sections of the shape were extracted from the measured 3D shape data to evaluate the dynamic characteristics. Moreover, the FEM was applied to the measured shape to make clear the structural characteristics, and the FEM results were compared with the distribution of the second moments of area of the cross-sections. Finally, it was suggested that the shape of ENGUWA seemed to have a special structural rationality which had been constructed under actual dynamic and geometric conditions in daily use.

Journal

• Bulletin of Japanese Society for the Science of Design

  Bulletin of Japanese Society for the Science of Design 61 (2), 2_35-2_38, 2014

  Japanese Society for the Science of Design

Keywords

• Wooden Hoe
• Second Moments of Area
• Structural Rationality

Details

• CRID: 1390282680388653568
• NII Article ID: 130004700647
• DOI: 10.11247/jssdj.61.2_35
• ISSN: 21865221
• ISSN: 09108173
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed