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A comparison of approaches for modelling poro-mechanics in the Material Point Method

Pretti, G. and Coombs, W.M. and Augarde, C.E. (2022) 'A comparison of approaches for modelling poro-mechanics in the Material Point Method.', UKACM 2022 Nottingham, UK, 20-22 April 2022.


When it comes to the analysis of fully saturated porous materials, a plethora of formulations [1] are available in the literature. Among them, the so-called u − p formulation constitutes a well-established approach when low-frequency problems are considered. It can, however, exhibit instabilities due to the discretisation as primary variables of physically different quantities, i.e., a displacement and a pressure field. Two techniques for dealing with this instability (the Taylor-Hood family of elements and the Polynomial Pressure Projection) are summarised and cross-compared for the Material Point Method and the Generalised Interpolation Material Point Method.

Item Type:Conference item (Paper)
Full text:Publisher-imposed embargo
(AM) Accepted Manuscript
File format - PDF
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Date accepted:16 March 2022
Date deposited:21 April 2022
Date of first online publication:No date available
Date first made open access:No date available

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