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PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: B.H.V. Topping
Introducing the Infinite Element for Scaled Boundary Analysis of an Initial Valued Non-Homogeneous Elastic Half Space
G.H. Lee1, A.J. Deeks2, H.W. Lee3 and H.J. Chung4
1National Mokpo Maritime University, Korea
G.H. Lee, A.J. Deeks, H.W. Lee, H.J. Chung, "Introducing the Infinite Element for Scaled Boundary Analysis of an Initial Valued Non-Homogeneous Elastic Half Space", in B.H.V. Topping, (Editor), "Proceedings of the Eleventh International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 102, 2007. doi:10.4203/ccp.86.102
Keywords: scaled boundary analysis, initial valued non-homogeneous half space, mapping type infinite element, vertical variation.
In this paper the infinite element approach was studied to analyze the initial valued non-homogeneous elastic half space by the scaled boundary analysis. The free surface of the initial valued non-homogeneous elastic half space was modeled as a boundary of the circumferential direction of the scaled boundary coordinate .
The infinite element was used to represent the infinite length of the free surface. The initial value of material property was considered by the position of the scaling center and the power function of the radial direction. By the use of the mapping type infinite element, the consistent element formulation could be available. To represent the infinite length of the element, the coordinates can be represented by an infinite mapping function.
The performance and the feasibility of proposed approach are examined by a numerical example for a stiff strip type footing, embedded in a non-homogeneous half plane. The vertical displacements of nodes due to horizontal traction on the surface of footing were also estimated. The responses of infinite model show the consistent manner, but the responses of approximated analysis show the greatest divergence for the analysis range.
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