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New definition of conservative internal moments in space frames

Report


Type Of Work


  • Report

Abstract


  • There have been controversy and uncertainties surrounding the rotational behaviour of conservative internal bending moments in three-dimensional frames. The two contesting representations of conservative internal bending moments are the quasi-tangential and the semi-tangential moments, each of which has its own shortcoming from the purely physical point of view. This situation must be rectified as the correct identification of the nature of internal moments is indispensable for reliable buckling and large displacement analysis of three-dimensional structures, especially when they are subjected to externally applied moments or torques. This paper presents a new type of conservative moment which has hitherto never been considered in the literature, and demonstrates that the proposed representation of conservative internal moments can be justified on both physical and the rigorous mathematical grounds. Various issues relating to finite rotations and the work done by conservative moments in space are also addressed.

Publication Date


  • 1995

Citation


  • Teh, L. H., & Clarke, M. J. (1995). New definition of conservative internal moments in space frames: Research Report - University of Sydney, School of Civil and Mining Engineering.

Scopus Eid


  • 2-s2.0-0029370855

Web Of Science Accession Number


Book Title


  • Research Report - University of Sydney, School of Civil and Mining Engineering

Start Page


  • 1

End Page


  • 31

Issue


  • 713

Type Of Work


  • Report

Abstract


  • There have been controversy and uncertainties surrounding the rotational behaviour of conservative internal bending moments in three-dimensional frames. The two contesting representations of conservative internal bending moments are the quasi-tangential and the semi-tangential moments, each of which has its own shortcoming from the purely physical point of view. This situation must be rectified as the correct identification of the nature of internal moments is indispensable for reliable buckling and large displacement analysis of three-dimensional structures, especially when they are subjected to externally applied moments or torques. This paper presents a new type of conservative moment which has hitherto never been considered in the literature, and demonstrates that the proposed representation of conservative internal moments can be justified on both physical and the rigorous mathematical grounds. Various issues relating to finite rotations and the work done by conservative moments in space are also addressed.

Publication Date


  • 1995

Citation


  • Teh, L. H., & Clarke, M. J. (1995). New definition of conservative internal moments in space frames: Research Report - University of Sydney, School of Civil and Mining Engineering.

Scopus Eid


  • 2-s2.0-0029370855

Web Of Science Accession Number


Book Title


  • Research Report - University of Sydney, School of Civil and Mining Engineering

Start Page


  • 1

End Page


  • 31

Issue


  • 713