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Doctoral thesis . 2023
License: CC BY NC SA
Data sources: Datacite
TUHH Open Research - Research Data TUHH
Doctoral thesis . 2023
License: CC BY NC SA
Data sources: Datacite
DBLP
Doctoral thesis
Data sources: DBLP
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Regularized MPM for porous media

Authors: Alexander Chmelnizkij;

Regularized MPM for porous media

Abstract

Die vorliegende Arbeit beschäftigt sich mit der Verbesserung der Material Point Methode (MPM) und ihrer Anwendung auf Differentialgleichungen, die zur Modellierung von trockenen und gesättigten porösen Medien verwendet werden. Zur Verbesserung der Moving Least Squares Approximation (MLS) in der MPM wird eine adaptive Regularisierung vorgeschlagen, die es ermöglicht auch bei ungünstigen Verteilungen von Material Punkten zufriedenstellende Ergebnisse zu erzielen. Zusätzlich wird die Wendland Funktion als Gewichtungsfunktion für die MPM vorgeschlagen, die verbesserten Ergebnisse bei der Konvergenzanalyse zeigt. Zur effizienteren Simulation von gesättigten Böden, wird die Parallelisierung der Double-Point-MPM (2P-MPM) vorgestellt.

The present work deals with improving the Material Point Method (MPM) and its application to differential equations for modelling dry and saturated porous media. An adaptive regularization is proposed to improve the Moving Least Squares Approximation (MLS) in MPM, allowing improved results to be obtained even in the presence of unfavourable distributions of material points. Moreover, the Wendland function is proposed as a weighting function for the MPM, showing better convergence analysis results. The parallelization of the double point MPM (2P-MPM) is presented for a more efficient simulation of saturated soils.

Country
Germany
Keywords

Geowissenschaften, Material Point Method (MPM), Wave propagation in saturated porous media, Moving-Least-Squares (MLS), Regularization, Large Deformation, Parallization

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
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