Constitutive Laws for Dynamic Modelling of Soils,

Marti, Juan-Jose Ibanez; Cundall, P.A.

doi:10.21236/ada082733

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“…Pressure dependent yield, anisotropy, dilatation and non-associativity, hysteretic cyclic behaviour, pore pressure, are important features for soil plasticity. An excellent review of this topic has been given by Marti and Cundall (1980).…”

Section: Other Plasticity Modelsmentioning

confidence: 99%

Numerical modelling in large strain plasticity with application to tube collapse analysis

Ruigómez¹

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Numerical methods are proposed for the analysis of 2 or 3dimensional large strain plasticity problems. A Finite Difference program, with 2-dimensional continuum elements and explicit time integration, has been developed and applied to model the axisymmetric crumpling of circular tubes. New types of mi xed el ements (Triangles-Quadrilaterals for 2-D, Tetrahedra-Bricks for 3-D) are proposed for the spatial discretization. These elements model accurately incompressible plastic flow, without unwanted "zero-energy" deformation modes or tangling over of the mesh. Elastic-plastic, rate dependent laws are modelled with a "radial return" algorithm. The transmission of heat generated by plastic work and material dependence on temperature are also included, enabling a fully coupled thermo-mechanical analysis. A 2-D and axisymmetric computer program has been developed, Dr. J. Marti from Principia, for his invaluable expert advice on theoretical and numerical matters, and his friendly support and suggestions; Or. £. Alarcon, for his help and motivation in the initial stages of work; The staff and technicians of the Civil Engineering Department at King's College, for their help and cooperation; My wife, Tereca Marin, for her help in the preparation of figures, and her unending patience and encouragement during the research period. I would also like to thank the following bodies for sponsoring my research at the various stages: The British Council, The Spanish Government (Ministry of Education), Principia Mechanica Ltd. (UK), and the Committee of Vicechancellors and Principals (UK).

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Section: Other Plasticity Modelsmentioning

confidence: 99%

Numerical modelling in large strain plasticity with application to tube collapse analysis

Ruigómez¹

View full text Add to dashboard Cite

show abstract

Constitutive Laws for Dynamic Modelling of Soils,

Cited by 1 publication

References 1 publication

Numerical modelling in large strain plasticity with application to tube collapse analysis

Numerical modelling in large strain plasticity with application to tube collapse analysis

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