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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 50
Edited by: B.H.V. Topping and M.B. Leeming
Paper VII.1

Implementation of a Kinematic Soil Model into an Implicit Dynamic Algorithm

P. Woodward* and F. Molenkamp#

*Department of Civil and Offshore Engineering, Heriot-Watt University, Edinburgh, United Kingdom
#Institute of Science and Technology, UMIST, Manchester, United Kingdom

Full Bibliographic Reference for this paper
P. Woodward, F. Molenkamp, "Implementation of a Kinematic Soil Model into an Implicit Dynamic Algorithm", in B.H.V. Topping, M.B. Leeming, (Editors), "Innovation in Computer Methods for Civil and Structural Engineering", Civil-Comp Press, Edinburgh, UK, pp 89-94, 1997. doi:10.4203/ccp.50.7.1
The implementation of a kinematic elasto-plastic constitutive soil model into an implicit dynamic finite element program is presented. The model can simulate the complex behaviour of geo-materials through a wide range of frequencies, even towards the critical state. The paper presents some of the basic constitutive equations used in its formulation and their implementation into a dynamic finite element program using a Modified Newton-Raphson predictor-corrector solution strategy within an implicit Wilson theta Method algorithm. The paper concludes by illustrating the example of an impact load on a single finite element in conditions of axi-symmetry under both drained and undrained conditions.

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