Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 36 for “"material point method"”.
-
Improving the Material Point Method
The material point method (MPM) was designed to solve problems in solid mechanics, and it has been used widely in research and industry. In MPM, the equations of motion are solved on a background grid and Lagrangian material points represent the geometry of the body, carrying history-dependent …
-
Splitting solution scheme for material point method
Material point method (MPM) is a numerical tool which was originally used for modelling large deformations of solid mechanics problems. Due to the particle based spatial discretiza- tion, MPM is naturally capable of handling large mass movements together with topological changes. Further, the …
-
A nonlocal dense granular flow model implemented in the material point method
… for dense granular flow is implemented in the material point method (MPM), an extension of the finite element method (FEM) for solid mechanics. The nonlocal model used has shown great predictive capability for dense flows when implemented in the finite element framework, but limitations of FEM …
-
A Particle-Based Multi-Scale Simulation Procedure within the Material Point Method Framework
… between the Dissipative Particle Dynamics (DPD) method and the Material Point Method (MPM), and a hierarchical bridge from Molecular Dynamics (MD) to DPD. Particularly, a simple interfacial treatment is also introduced for concurrent DPD/MPM simulations based on the features of the DPD force …
-
Integrating Peridynamics to Material Point Method for Modelling Solids and Fracture Dynamics in High Velocity Impact.
The desire for graphical methods to intuitively handle elastoplastic materials has grown hand in hand with the advances made in computer Graphics. Simulating physical materials with dynamic movements to photorealistic resolution is still one of the most crucial and challenging topics, especially …
-
A coupled, two-phase fluid-sediment material model and mixture theory implemented using the material point method
… (ii) the critical state behavior of granular materials under shear, (iii) the viscous thickening of fluid due to the presence of suspended grains, and (iv) the Darcy-like drag interaction for both dense and dilute mixtures. The full constitutive model is combined with the basic equations of …
-
Applying the Material Point Method to Identify Key Factors Controlling Runout of the Cadia Tailings Dam Failure of 2018
… dam just prior to failure is defined, with the materials and their properties laid out and discussed in depth as well as our means of modeling their behavior. Third, we validate and discuss our results of the base model of the dam based on key topographic features from initial and post-failure …
-
Investigating the Thermo-Mechanical Behavior of Highly Porous Ultra-High Temperature Ceramics using a Multiscale Quasi-Static Material Point Method
… temperature ceramics (UHTCs) are a class of materials that maintain their structural integrity at high temperatures, e.g. 2000 °C. They have been limited in their aerospace applications because of their relatively high density and the difficulty involved in forming them into complex shapes, …
-
Modelling Tremie Concrete Placement in Deep Foundations
… are typically constructed using the Tremie Method of concrete emplacement. A pipe and hopper system is used to fill an excavation from the base up with a specialised, highly workable concrete called Tremie Concrete. In this thesis, numerical modelling and experimental analysis are employed …
-
A Critical Evaluation of Computational Fracture Using a Smeared Crack Approach in MPM
… of the smeared crack representation of material failure using the material-point method (MPM) as a feasible computational failure approach is performed. The spatial descretization in MPM is defined by a grid of cells that represent space and a set of points that represent the deformable …
-
The Taichi High-Performance and Differentiable Programming Language for Sparse and Quantized Visual Computing
… and simulate unprecedented 235 million material point method (MPM) particles on a single GPU.
-
Analyzing internal shearing in compound landslides using MPM
… determines the final degradation of the material. This work focuses on the study of internal failure mechanisms that develop in compound landslides. A theoretical model of a compound landslide is numerically analyzed using the Material Point Method (MPM), a state-of-the-art numerical …
-
The ChainQueen differentiable physics engine
… ChainQueen, based on the Moving Least Squares Material Point Method (MLS-MPM). MLS-MPM can simulate deformable objects including contact and can be seamlessly incorporated into inference, control and co-design systems. We demonstrate that our simulator achieves high precision in both forward …
-
MPM Modeling of the Impact of Compound Landslides on a Rigid Wall
… and the interaction with rigid structures. The Material Point Method (MPM), an advanced numerical tool capable of simulating large deformations, captures the whole instability and the impact process. A simple geometry of a biplanar compound landslide is considered with two different types of …
-
A hybrid discrete element and continuum method for multiscale granular media modeling
… two extremes are often taken. In one, granular materials are modeled as a continuum, which greatly reduces the number of degrees of freedom that describe the system and can thus be simulated relatively quickly. However continuum models are not always precise and have difficulty capturing certain …
-
Numerical Analysis of FFP Impact on Saturated Loose Sand
… saturated loose sands using the particle-based Material Point Method (MPM). The numerical analysis was conducted by simulating calibration chamber FFP tests on saturated loose quartz sand. The numerical results using quasi-static properties resulted in a reaction of the sand softer than the …
-
Thermomechanical Modeling of Oxidation Effects in Porous Ultra-High Temperature Ceramics
… have been investigated. An in-house quasi-static material point method tool was used to perform two -dimensional plane strain simulations on unoxidized hexagonal representative volume elements (RVEs) with macroporosity volume fractions of 10%, 40% and 70% to establish a baseline for the response …
-
Numerical and Data Analysis of a Portable Free Fall Penetremeter
… due to the empirical nature of existing methods used to infer soil properties from impact acceleration measurements. This research aims to improve the reliability of PFFP-based soil characterization by advancing both numerical modeling and data processing techniques. To this end, a …
-
Improving CPT-Based Earthquake Liquefaction Hazard Assessment at Challenging Soil Sites
… CPTs in interlayered soil profiles using the Material Point Method (MPM) is developed. A framework for linking uncertainties associated with the numerical analyses and the laboratory CPT calibration chamber tests used to calibrate the numerical analyses is also proposed. Finally, a database of …
Page 1 of 2