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Golchin, A. (author), Vardon, P.J. (author), Hicks, M.A. (author)The formulation of a new thermo-mechanical constitutive model consistent with the principles of thermodynamics is presented. The model is capable of predicting the rate-independent thermo-mechanical behavior of fine-grained soils. The constitutive equations are derived by defining only a Gibbs-type free energy and a dissipation potential, in...journal article 2022
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Zheng, X. (author), Gonzalez Acosta, J.L. (author), Remmerswaal, G. (author), Vardon, P.J. (author), Pisano, F. (author), Hicks, M.A. (author)The material point method (MPM) shows promise for the simulation of large deformations in history-dependent materials such as soils. However, in general, it suffers from oscillations and inaccuracies due to its use of numerical integration and stress recovery at non-ideal locations. The development of a hydro-mechanical model, which does not...conference paper 2021
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Gonzalez Acosta, J.L. (author), Zheng, X. (author), Vardon, P.J. (author), Hicks, M.A. (author), Pisano, F. (author)Stress oscillations in the material point method (MPM) are one of the major reasons unrealistic results are obtained. In this paper an investigation of the stress oscillations occurring when using one- and two-phase approaches is performed. Specifically, an axisymmetric benchmark and a two-dimensional plane strain problem are used to demonstrate...conference paper 2019
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Vardon, P.J. (author), Buragohain, Poly (author), Hicks, M.A. (author), Hart, J (author), Fokker, PA (author), Graham, C (author)OPERA-PU-TUD321c<br/>Radioactive substances and ionizing radiation are used in medicine, industry, agriculture, re- search, education and electricity production. This generates radioactive waste. In the Neth- erlands, this waste is collected, treated and stored by COVRA (Centrale Organisatie Voor Radioactief Afval). After interim storage for a...report 2017
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Buragohain, P. (author), Vardon, P.J. (author), Hicks, M.A. (author)Disposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the Boom Clay is considered as a potential host rock when designing a generic waste repository in the Netherlands. For design and evaluation of a...conference paper 2016
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Buragohain, P. (author), Vardon, P.J. (author), Hicks, M.A. (author)Disposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the Boom Clay is considered as a potential host rock when designing a generic waste repository in the Netherlands. For design and evaluation of a...conference paper 2016