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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 28
COMPUTATIONAL STRUCTURAL ENGINEERING FOR PRACTICE Edited by: M. Papadrakakis and B.H.V. Topping
Paper VI.2
Finite Element Analysis of Fluted Conical Shell Roof Structures A.B. Sabir* and A.I. Mousa#
*Division of Structural Engineering, University of Wales - Cardiff, Cardiff, United Kingdom
A.B. Sabir, A.I. Mousa, "Finite Element Analysis of Fluted Conical Shell Roof Structures", in M. Papadrakakis, B.H.V. Topping, (Editors), "Computational Structural Engineering for Practice", Civil-Comp Press, Edinburgh, UK, pp 173-181, 1994. doi:10.4203/ccp.28.6.2
Abstract
The finite element method is used to obtain an elastic linear
analysis of a fluted shell roof. A finite element in the form of a
conical segment is developed. The element's displacement
fields are in terms of curvilinear co-ordinates, satisfy the exact
requirement of rigid body modes of deformation and has six
degrees of freedom at each of the four corner nodes. The roof
is made up of several conical segment joined together along
lines of generators. To satisfy equilibrium and compatibility
along these junctions and to reduce computational time the
stiffness matrix for any element next to these lines are
developed in a special way. The co-ordinates of the nodes
along these lines are transformed into a global co-ordinate
system while leaving the other nodes of these elements to have
their original curvilinear directions.
The results are compared with a finite difference solution and a parametric study is carried out to find the effect of varying the geometry of the roof on the level of deflections and stresses. purchase the full-text of this paper (price £20)
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