Use of Off-Set Beam Elements in a Model for Torsional Deflection Analysis of a Grid Structure of Open Cross Sections

  • Norio Toda
  • Nobutoshi Yoshimura
Conference paper


This paper describes an effective procedure for analyzing the torsional strength of grid structures made of open cross sections, for instance, hydraulic gate leaves, hatch covers and the stern ramps of RO/RO ships. When these structures are twisted, their torsional rigidity and warping rigidity and the type of joints connecting their transverse and longitudinal members are key factors in determining their flexiblity. A simple modelling technique using off-set beam elements will be proposed for calculating the deflections. This technique makes it possible to include the above three factors.


Grid Structure Torsional Rigidity Applied Torque Gusset Plate Face Plate 
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    Kawai: Vibration and Response using Matrix Method, Strucutural Engineering Series Using Computers 1–4B, Baihukan, 1971Google Scholar
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    User’s Manual of MSC/NASTRAN V64, MSC Corp., 1985Google Scholar

Copyright information

© Springer Japan 1986

Authors and Affiliations

  • Norio Toda
    • 1
  • Nobutoshi Yoshimura
    • 1
  1. 1.Nippon Kokan K.K.Tsurumi-ku, Yokohama, 230Japan

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