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Jonathan Trevelyan's Outputs (107)

Interactive three-dimensional boundary element stress analysis of components in aircraft structures (2015)
Journal Article
Foster, T., Mohamed, M., Trevelyan, J., Coates, G., Spence, S., & Walker, S. (2015). Interactive three-dimensional boundary element stress analysis of components in aircraft structures. Engineering Analysis with Boundary Elements, 56, 190-200. https://doi.org/10.1016/j.enganabound.2015.01.017

Computer aided design of mechanical components is an iterative process that often involves multiple stress analysis runs; this can be time consuming and expensive. Significant efficiency improvements can be made by increasing interactivity at the con... Read More about Interactive three-dimensional boundary element stress analysis of components in aircraft structures.

A direct SIF approach for anisotropic materials using the boundary element method (2015)
Presentation / Conference Contribution
Hattori, G., Alatawi, I., & Trevelyan, J. (2015, April). A direct SIF approach for anisotropic materials using the boundary element method. Presented at ACME 2015., Swansea, Wales

Recently developments in numerical methods such as the Extended Finite Element Method (X-FEM) and the Extended Boundary Element Method (X-BEM) have significantly improved the accuracy in linear elastic fracture mechanics (LEFM) problems. Nevertheless... Read More about A direct SIF approach for anisotropic materials using the boundary element method.

A direct evaluation of stress intensity factors using the Extended Dual Boundary Element Method (2015)
Journal Article
Alatawi, I., & Trevelyan, J. (2015). A direct evaluation of stress intensity factors using the Extended Dual Boundary Element Method. Engineering Analysis with Boundary Elements, 52, 56-63. https://doi.org/10.1016/j.enganabound.2014.11.022

We introduce an alternative method in computational fracture mechanics to evaluate Stress Intensity Factors (SIFs) directly using the Extended Dual Boundary Element Method (XBEM) for 2D problems. Like other enrichment approaches, the new approach is... Read More about A direct evaluation of stress intensity factors using the Extended Dual Boundary Element Method.

Extended isogeometric boundary element method (XIBEM) for three-dimensional medium-wave acoustic scattering problems (2015)
Journal Article
Peake, M., Trevelyan, J., & Coates, G. (2015). Extended isogeometric boundary element method (XIBEM) for three-dimensional medium-wave acoustic scattering problems. Computer Methods in Applied Mechanics and Engineering, 284, 762-780. https://doi.org/10.1016/j.cma.2014.10.039

A boundary element method (BEM), based on non-uniform rational B-splines (NURBS), is used to find solutions to three-dimensional wave scattering problems governed by the Helmholtz equation. The method is extended in a partition-of-unity sense, multip... Read More about Extended isogeometric boundary element method (XIBEM) for three-dimensional medium-wave acoustic scattering problems.

Mixed enrichment for the finite element method in heterogeneous media (2014)
Journal Article
Diwan, G., Mohamed, M., Seaid, M., Trevelyan, J., & Laghrouche, O. (2015). Mixed enrichment for the finite element method in heterogeneous media. International Journal for Numerical Methods in Engineering, 101(1), 54-78. https://doi.org/10.1002/nme.4795

Problems of multiple scales of interest or of locally nonsmooth solutions may often involve heterogeneous media. These problems are usually very demanding in terms of computations with the conventional finite element method. On the other hand, differ... Read More about Mixed enrichment for the finite element method in heterogeneous media.

Enriched BEM for fracture in anisotropic materials (2014)
Presentation / Conference Contribution
Hattori, G., Sáez, A., Trevelyan, J., & García-Sánchez, F. (2014, July). Enriched BEM for fracture in anisotropic materials. Presented at International Conference on Boundary Element and Meshless Techniques XV, Florence, Italy

Characteristics of group velocities of backward waves in a hollow cylinder (2014)
Journal Article
Cui, H., Lin, W., Zhang, H., Wang, X., & Trevelyan, J. (2014). Characteristics of group velocities of backward waves in a hollow cylinder. The Journal of the Acoustical Society of America, 135(6), 3398-3408. https://doi.org/10.1121/1.4872297

It is known that modes in axially uniform waveguides exhibit backward-propagation characteristics for which group and phase velocities have opposite signs. For elastic plates, group velocities of backward Lamb waves depend only on Poisson's ratio. Th... Read More about Characteristics of group velocities of backward waves in a hollow cylinder.

Boundary element simulation of fatigue crack growth in multi-site damage (2014)
Journal Article
Price, R., & Trevelyan, J. (2014). Boundary element simulation of fatigue crack growth in multi-site damage. Engineering Analysis with Boundary Elements, 43, 67-75. https://doi.org/10.1016/j.enganabound.2014.03.002

This paper presents an efficient and automatic scheme for modelling the growth of multiple cracks through a two-dimensional domain under fatigue loading based on linear elastic fracture mechanics. The dual boundary element method is applied to perfor... Read More about Boundary element simulation of fatigue crack growth in multi-site damage.

Dynamically-controlled variable-fidelity modelling for aircraft structural design optimisation (2014)
Journal Article
Allen, J., Coates, G., & Trevelyan, J. (2014). Dynamically-controlled variable-fidelity modelling for aircraft structural design optimisation. Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 228(8), 1434-1449. https://doi.org/10.1177/0954410013493074

Structural mass optimisation of an aircraft design is important in increasing the likelihood that a high quality airframe is designed of minimal weight whilst providing necessary resistance to load. Analysis of such structures is often performed at a... Read More about Dynamically-controlled variable-fidelity modelling for aircraft structural design optimisation.

Structural optimisation based on the boundary element and level set methods (2014)
Journal Article
Ullah, B., Trevelyan, J., & Matthews, P. (2014). Structural optimisation based on the boundary element and level set methods. Computers and Structures, 137, 14-30. https://doi.org/10.1016/j.compstruc.2014.01.004

A new method of structural topology optimisation is proposed in which an evolutionary approach is used with boundary element and level set methods. During the optimisation iterations, the proposed method automatically introduces internal cavities and... Read More about Structural optimisation based on the boundary element and level set methods.

The equal spacing of N points on a sphere with application to partition-of-unity wave diffraction problems (2014)
Journal Article
Peake, M., Trevelyan, J., & Coates, G. (2014). The equal spacing of N points on a sphere with application to partition-of-unity wave diffraction problems. Engineering Analysis with Boundary Elements, 40, 114-122. https://doi.org/10.1016/j.enganabound.2013.11.020

This paper addresses applications involving the selection of a set of points on a sphere, in which the uniformity of spacing can be of importance in enhancing the computational performance and/or the accuracy of some simulation. For the authors, the... Read More about The equal spacing of N points on a sphere with application to partition-of-unity wave diffraction problems.

A comparison of techniques for overcoming non-uniqueness of boundary integral equations for the collocation partition of unity method in two dimensional acoustic scattering (2013)
Journal Article
Diwan, G., Trevelyan, J., & Coates, G. (2013). A comparison of techniques for overcoming non-uniqueness of boundary integral equations for the collocation partition of unity method in two dimensional acoustic scattering. International Journal for Numerical Methods in Engineering, 96(10), 645-664. https://doi.org/10.1002/nme.4583

The Partition of Unity Method has become an attractive approach for extending the allowable frequency range for wave simulations beyond that available using piecewise polynomial elements. The non-uniqueness of solution obtained from the conventional... Read More about A comparison of techniques for overcoming non-uniqueness of boundary integral equations for the collocation partition of unity method in two dimensional acoustic scattering.

An enriched finite element model with q-refinement for radiative boundary layers in glass cooling (2013)
Journal Article
Mohamed, M., Seaid, M., Trevelyan, J., & Laghrouche, O. (2014). An enriched finite element model with q-refinement for radiative boundary layers in glass cooling. Journal of Computational Physics, 258, 718-737. https://doi.org/10.1016/j.jcp.2013.11.005

Radiative cooling in glass manufacturing is simulated using the partition of unity finite element method. The governing equations consist of a semi-linear transient heat equation for the temperature field and a stationary simplified P1 approximation... Read More about An enriched finite element model with q-refinement for radiative boundary layers in glass cooling.

Correlation between hole insertion criteria in a boundary element and level set based topology optimisation method (2013)
Journal Article
Ullah, B., & Trevelyan, J. (2013). Correlation between hole insertion criteria in a boundary element and level set based topology optimisation method. Engineering Analysis with Boundary Elements, 37(11), 1457-1470. https://doi.org/10.1016/j.enganabound.2013.08.003

The research work presented in this paper is based on the correlation between two hole insertion criteria in a boundary element method (BEM) and level set method (LSM) based structural topology optimisation scheme for 2D elastic problems. The hole in... Read More about Correlation between hole insertion criteria in a boundary element and level set based topology optimisation method.

Time-independent hybrid enrichment for finite element solution of transient conduction–radiation in diffusive grey media (2013)
Journal Article
Mohamed, M., Seaid, M., Trevelyan, J., & Laghrouche, O. (2013). Time-independent hybrid enrichment for finite element solution of transient conduction–radiation in diffusive grey media. Journal of Computational Physics, 251, 81-101. https://doi.org/10.1016/j.jcp.2013.05.030

We investigate the effectiveness of the partition-of-unity finite element method for transient conduction–radiation problems in diffusive grey media. The governing equations consist of a semi-linear transient heat equation for the temperature field a... Read More about Time-independent hybrid enrichment for finite element solution of transient conduction–radiation in diffusive grey media.

A hyper-heuristic approach to aircraft structural design optimization (2013)
Journal Article
Allen, J., Coates, G., & Trevelyan, J. (2013). A hyper-heuristic approach to aircraft structural design optimization. Structural and Multidisciplinary Optimization, 48(4), 807-819. https://doi.org/10.1007/s00158-013-0928-3

The conceptual design of an aircraft is a challenging problem in which optimization can be of great importance to the quality of design generated. Mass optimization of the structural design of an aircraft aims to produce an airframe of minimal mass w... Read More about A hyper-heuristic approach to aircraft structural design optimization.

Improving wind turbine drivetrain bearing reliability through pre-misalignment (2013)
Journal Article
Whittle, M., Trevelyan, J., Shin, W., & Tavner, P. (2013). Improving wind turbine drivetrain bearing reliability through pre-misalignment. Wind Energy, 17(8), 1217-1230. https://doi.org/10.1002/we.1629

Improving the reliability of wind turbines (WT) is an essential component in the bid to minimize the cost of energy, especially for offshore wind because of the difficulties associated with access for maintenance. Numerous studies have shown that WT... Read More about Improving wind turbine drivetrain bearing reliability through pre-misalignment.

Extended isogeometric boundary element method (XIBEM) for two-dimensional Helmholtz problems (2013)
Journal Article
Peake, M., Trevelyan, J., & Coates, G. (2013). Extended isogeometric boundary element method (XIBEM) for two-dimensional Helmholtz problems. Computer Methods in Applied Mechanics and Engineering, 259, 93-102. https://doi.org/10.1016/j.cma.2013.03.016

Isogeometric analysis is a topic of considerable interest in the field of numerical analysis. The boundary element method (BEM) requires only the bounding surface of geometries to be described; this makes non-uniform rational B-splines (NURBS), which... Read More about Extended isogeometric boundary element method (XIBEM) for two-dimensional Helmholtz problems.