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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: New Approaches, Materials & Construction Methods

Bending stiffness of three layered plates of a rectangle shell made of flat plates and bolts, and Improvement of model figure by minimizing the sum of curvatures between the elements

< Table of Contents for New Approaches, Materials & Construction Methods
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: New Approaches, Materials & Construction Methods
  • Pages: 7
  • Title: Bending stiffness of three layered plates of a rectangle shell made of flat plates and bolts, and Improvement of model figure by minimizing the sum of curvatures between the elements
  • Author(s): Shigehiro Morooka
  • Keywords: curved surface, minimizing the difference, drawings and assembled model, bending stiffness of curvature, rectangular shell, flat plates
Abstract
The author has proposed the construction method to make a shell surface made of flat plates and bolts. In this method, two or three bending plates are superposed and fixed. As we know, we can easily bend a flat plate in one direction, and superposing two or three plates bending in different directions makes clearance between the plates, and we cannot easily estimate the stiffness of this curvature. The first purpose of this paper is to estimate the bending stiffness especially for seismic design. To estimate the stiffness by using the thickness of the plates, I made a FEM model and changed the plate thickness to accord the vibration frequency of small assembled model. The second purpose is to reduce the difference between drawings and the assembled model. To reduce the difference, I changed nodal positions to reduce sum of squares of curvatures and checked its validity.

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