Search Results - "Knappett, Jonathan"

On Lagrangian mechanics and the implicit material point method for large deformation elasto-plasticity by Coombs, William M., Augarde, Charles E., Brennan, Andrew J., Brown, Michael J., Charlton, Tim J., Knappett, Jonathan A., Ghaffari Motlagh, Yousef, Wang, Lei

“…The material point method is ideally suited to modelling problems involving large deformations where conventional mesh-based methods would struggle. However,…”
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Effect of soil deformability on the failure mechanism of shallow plate or screw anchors in sand by Cerfontaine, Benjamin, Knappett, Jonathan A., Brown, Michael J., Bradshaw, Aaron S.

“…Most analytical approaches for the design of shallow plate and screw anchors in tension are based on the limit equilibrium of a rigid soil wedge for which a…”
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Centrifuge modeling of rocking-isolated inelastic RC bridge piers by Loli, Marianna, Knappett, Jonathan A., Brown, Michael J., Anastasopoulos, Ioannis, Gazetas, George

“…SUMMARY Experimental proof is provided of an unconventional seismic design concept, which is based on deliberately underdesigning shallow foundations to…”
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A finite element approach for determining the full load–displacement relationship of axially loaded shallow screw anchors, incorporating installation effects by Cerfontaine, Benjamin, Knappett, Jonathan A, Brown, Michael J, Davidson, Craig S, Al-Baghdadi, Therar, Sharif, Yaseen U, Brennan, Andrew, Augarde, Charles, Coombs, William M, Wang, Lei, Blake, Anthony, Richards, David J, Ball, Jon

“…Screw anchors have been recognised as an innovative solution to support offshore jacket structures and floating systems, due to their low-noise installation…”
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An efficient and locking‐free material point method for three‐dimensional analysis with simplex elements by Wang, Lei, Coombs, William M., Augarde, Charles E., Cortis, Michael, Brown, Michael J., Brennan, Andrew J., Knappett, Jonathan A., Davidson, Craig, Richards, David, White, David J., Blake, Anthony P.

“…The Material Point Method is a relative newcomer to the world of solid mechanics modelling. Its key advantage is the ability to model problems having large…”
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Regional variation in the biomechanical properties of the human sclera by Elsheikh, Ahmed, Geraghty, Brendan, Alhasso, Daad, Knappett, Jonathan, Campanelli, Marino, Rama, Paolo

“…The study aimed to determine the variation in thickness and biomechanical properties between the different regions of the human sclera. Thickness measurements…”
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Evaluation of Rocking and Coupling Rotational Linear Stiffness Coefficients of Adjacent Foundations by Aldaikh, Hesham, Alexander, Nicholas A, Ibraim, Erdin, Knappett, Jonathan A

“…AbstractThis paper presents closed-form expressions for rocking spring stiffnesses and coupling interaction rotational spring stiffnesses for a set of closely…”
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Analysis of coupled axial and lateral deformation of roots in soil by Meijer, Gerrit J., Muir Wood, David, Knappett, Jonathan A., Bengough, Glyn A., Liang, Teng

“…Summary Plant roots can help to stabilise slopes. Existing analytical models to predict their mechanical contribution are however limited: they typically focus…”
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Design of plate and screw anchors in dense sand: failure mechanism, capacity and deformation by Cerfontaine, Benjamin, Knappett, Jonathan, Brown, Michael, Bradshaw, Aaron

“…Plate and screw anchors provide a significant uplift capacity and have multiple applications in both onshore and offshore geotechnical engineering. Uplift…”
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Root branching affects the mobilisation of root-reinforcement in direct shear by Meijer, Gerrit J., Muir Wood, David, Knappett, Jonathan A., Bengough, A. Glyn, Liang, Teng

“…The contribution of roots to the mechanical behaviour of soil has typically only been studied for the ultimate limit state. In these approaches, roots are…”
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System Identification of Tunnel Response to Ground Motion Considering a Simplified Model by Alonso-Rodriguez, Andres, Nikitas, Nikolaos, Knappett, Jonathan, Kampas, Georgios, Anastasopoulos, Ioannis, Fuentes, Raul

“…This paper presents a simplified model using coupled Bernoulli and shear beams supported by Winkler-type springs for system identification of tunnels subjected…”
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Anchor geotechnics for floating offshore wind: Current technologies and future innovations by Cerfontaine, Benjamin, White, David, Kwa, Katherine, Gourvenec, Susan, Knappett, Jonathan, Brown, Michael

“…A rapid expansion of the anchor market is required to meet the increasing demand for floating offshore wind. This paper, which is aimed at a broad readership…”
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Seismic behaviour of tunnels: From experiments to analysis by Tsinidis, Grigorios, de Silva, Filomena, Anastasopoulos, Ioannis, Bilotta, Emilio, Bobet, Antonio, Hashash, Youssef M.A., He, Chuan, Kampas, Georgios, Knappett, Jonathan, Madabhushi, Gopal, Nikitas, Nikolaos, Pitilakis, Kyriazis, Silvestri, Francesco, Viggiani, Giulia, Fuentes, Raul

“…•A State-of-the-art review on the seismic response and design of tunnels is presented.•Emphasis is placed on recorded responses of actual tunnels during past…”
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Shake table testing of the dynamic interaction between two and three adjacent buildings (SSSI) by Aldaikh, Hesham, Alexander, Nicholas A., Ibraim, Erdin, Knappett, Jonathan

“…The dynamic interaction of adjacent buildings in cities and urban areas through the soil medium is inevitable. This fact has been confirmed by various…”
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Nonlinear Lateral Response of RC Pile in Sand: Centrifuge and Numerical Modeling by Zhao, Rui, Leung, Anthony Kwan, Knappett, Jonathan, Robinson, Scott, Brennan, Andrew

“…AbstractCentrifuge modeling has been considered as an effective means of studying flexural soil–pile interaction, yet the conventional use of elastic material…”
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Small-Scale Modeling of Thermomechanical Behavior of Reinforced Concrete Energy Piles in Soil by Zhao, Rui, Leung, Anthony Kwan, Vitali, Davide, Knappett, Jonathan Adam, Zhou, Zheng

“…AbstractSmall-scale physical model tests have been increasingly used to study the thermomechanical soil–pile interaction, but existing model piles are highly…”
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Optimised design of screw anchors in tension in sand for renewable energy applications by Cerfontaine, Benjamin, Knappett, Jonathan, Brown, Michael John, Davidson, Craig, Sharif, Yaseen

“…The offshore deployment of floating offshore structures such as wind turbines or wave energy converters is expected to strongly increase during the next…”
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Using discrete element method (DEM) to create a cone penetration test (CPT)-based method to estimate the installation requirements of rotary-installed piles in sand by Sharif, Yaseen Umar, Brown, Michael John, Ciantia, Matteo Oryem, Cerfontaine, Benjamin, Davidson, Craig, Knappett, Jonathan, Meijer, Gerrit Johannes, Ball, Jonathan

“…Deep foundations may be used in a range of soil types where significant foundation resistance is required, but their installation is often associated with…”
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Particle size effects on the axial pull-out and push-in behaviour of roots by Zhang, Xingyu, Ciantia, Matteo Oryem, Knappett, Jonathan Adam, Leung, Anthony Kwan, Liang, Teng

“…For smaller plant roots in coarse-grained soils, large relative size of soil particles compared to roots can affect their axial resistance. Even for the larger…”
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Effects of screw pile installation on installation requirements and in-service performance using the discrete element method by Sharif, Yaseen Umar, Brown, Michael John, Cerfontaine, Benjamin, Davidson, Craig, Ciantia, Matteo Oryem, Knappett, Jonathan Adam, Ball, Jonathan David, Brennan, Andrew, Augarde, Charles, Coombs, Will, Blake, Anthony, Richards, David, White, David, Huisman, Marco, Ottolini, Marius

“…Existing guidance on the installation of screw piles suggest that they should be installed in a pitch-matched manner to avoid disturbance to the soil that may…”
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