Search Results - "Wells, G. N."

A new method for modelling cohesive cracks using finite elements by Wells, G. N., Sluys, L. J.

“…A model which allows the introduction of displacements jumps to conventional finite elements is developed. The path of the discontinuity is completely…”
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A consistent geometrically non-linear approach for delamination by Wells, G. N., de Borst, R., Sluys, L. J.

“…A new model is presented for the simulation of delamination in laminated composite materials. A key feature is that the material structure and the finite…”
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Simulating the propagation of displacement discontinuities in a regularized strain-softening medium by Wells, G. N., Sluys, L. J., de Borst, R.

“…A numerical model is developed which allows the inclusion of displacement discontinuities in a strain‐softening medium, independent of the finite element mesh…”
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On the use of embedded discontinuity elements with crack path continuity for mode-I and mixed-mode fracture by Alfaiate, J., Wells, G.N., Sluys, L.J.

“…In this paper, strong discontinuities embedded in finite elements are used to model discrete cracking in quasi-brittle materials. Special attention is paid to…”
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A new mechanism of strain transfer in polycrystals by Di Gioacchino, F., Edwards, T. E. J., Wells, G. N., Clegg, W. J.

“…At the grain boundaries of plastically deforming polycrystals, strain transfer mechanisms can accommodate the shear strain carried by slip bands and mechanical…”
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Analysis of slip planes in three-dimensional solids by Wells, G.N., Sluys, L.J.

“…Three-dimensional solids in which displacement jumps develop across planes are analysed. Critical to such analysis is the identification of the correct…”
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Simultaneous determination of zidovudine and lamivudine in human serum using HPLC with tandem mass spectrometry by Kenney, Kathryn B, Wring, Stephen A, Carr, Richard M, Wells, Guy N, Dunn, John A

“…A method employing high performance liquid chromatography (HPLC) with tandem mass spectrometry (MS) has been developed and validated for the simultaneous…”
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A p-adaptive scheme for overcoming volumetric locking during plastic flow by Wells, G.N., Sluys, L.J., de Borst, R.

“…A feature of many classical plasticity yield functions is that they impose a volumetric constraint on plastic deformation. For low-order finite elements, this…”
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Three-dimensional embedded discontinuity model for brittle fracture by Wells, G.N., Sluys, L.J.

“…Three-dimensional elements with discontinuous shape functions have been developed to model brittle fracture in unstructured meshes. Through the incorporation…”
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Discontinuous analysis of softening solids under impact loading by Wells, G. N., Sluys, L. J.

“…Softening solids are analysed under impact loading using a new numerical method which allows displacement discontinuities to propagate arbitrarily through a…”
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Some observations on embedded discontinuity models by de Borst, R., Wells, G.N., Sluys, L.J.

“…The formulation of finite elements with incompatible discontinuous modes is examined rigorously. Both weak and strong discontinuities are considered. Starting…”
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Cohesive-zone models, higher-order continuum theories and reliability methods for computational failure analysis by Borst, René de, Gutiérrez, Miguel A., Wells, Garth N., Remmers, Joris J. C., Askes, Harm

“…A concise overview is given of various numerical methods that can be used to analyse localization and failure in engineering materials. The importance of the…”
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Modelling temperature effects on multiphase flow through porous media by Wells, G.N., Hooijkaas, T., Shan, X.

“…We consider strong temperature effects on two-phase immiscible flow through a porous medium. A dependency on temperature is introduced via a…”
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A solid-like shell element allowing for arbitrary delaminations by Remmers, Joris J. C., Wells, Garth N., Borst, René de

“…In this contribution a new finite element is presented for the simulation of delamination growth in thin‐layered composite structures. The element is based on…”
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Application of embedded discontinuities for softening solids by Wells, G.N., Sluys, L.J.

“…Additional, discontinuous functions are added to the displacement field of standard finite elements in order to capture highly localised zones of intense…”
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The production and evaluation of a radioligand and antiserum for the radioimmunoassay of subnanogram per millilitre concentrations of lamivudine by Wring, S A, O'Neill, R M, Williams, J L, Jenner, W N, Daniel, M J, Gray, M R, Newman, J J, Wells, G N, Sutherland, D R

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Glycerolipid biosynthesis in rat adipose tissue. Influence of age and cell size on substrate utilization by Jamdar, Subhash C., Osborne, Linda J., Wells, Gary N.

“…The conversion of [14C]‐labeled compounds such as acetate, glucose, pyruvate and palmitate into CO2, glyceride‐glycerol, glyceride fatty acids and total lipids…”
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Mixed-precision finite element kernels and assembly: Rounding error analysis and hardware acceleration by Croci, M, Wells, G. N

“…In this paper we develop the first fine-grained rounding error analysis of finite element (FE) cell kernels and assembly. The theory includes mixed-precision…”
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Conservation properties for the Galerkin and stabilised forms of the advection–diffusion and incompressible Navier–Stokes equations by Hughes, Thomas J.R., Wells, Garth N.

“…A common criticism of continuous Galerkin finite element methods is their perceived lack of conservation. This may in fact be true for incompressible flows…”
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Synthesis of carbon-14 labelled NK-1 receptor antagonists GR203040 and GR205171 by Cable, Karl M., Wells, Guy N., Sutherland, Derek R.

“…Syntheses of carbon‐14 labelled versions of NK‐1 receptor antagonists GR203040 and GR205171 are described. The carbon‐14 atoms were introduced by palladium (0)…”
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