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Jonathan Trevelyan's Outputs (4)

An extended boundary element method formulation for the direct calculation of the stress intensity factors in fully anisotropic materials (2016)
Journal Article
Hattori, G., Alatawi, I., & Trevelyan, J. (2017). An extended boundary element method formulation for the direct calculation of the stress intensity factors in fully anisotropic materials. International Journal for Numerical Methods in Engineering, 109(7), 965-981. https://doi.org/10.1002/nme.5311

We propose a formulation for linear elastic fracture mechanics (LEFM) in which the stress intensity factors (SIF) are found directly from the solution vector of an extended boundary element method (XBEM) formulation. The enrichment is embedded in the... Read More about An extended boundary element method formulation for the direct calculation of the stress intensity factors in fully anisotropic materials.

A boundary element and level set based topology optimisation using sensitivity analysis (2016)
Journal Article
Ullah, B., & Trevelyan, J. (2016). A boundary element and level set based topology optimisation using sensitivity analysis. Engineering Analysis with Boundary Elements, 70, 80-98. https://doi.org/10.1016/j.enganabound.2016.06.001

The structural topology optimisation method presented in this paper is based on the boundary element method, level set method and shape sensitivity analysis for two-dimensional linear elastic problems. The proposed method automatically nucleates hole... Read More about A boundary element and level set based topology optimisation using sensitivity analysis.

Backward waves with double zero-group-velocity points in a liquid-filled pipe (2016)
Journal Article
Cui, H., Lin, W., Zhang, H., Wang, X., & Trevelyan, J. (2016). Backward waves with double zero-group-velocity points in a liquid-filled pipe. The Journal of the Acoustical Society of America, 139(3), 1179-1194. https://doi.org/10.1121/1.4944046

Hollow cylinders often exhibit backward propagation modes whose group and phase velocities have opposite directions, and these exhibit a minimum possible frequency at which the group velocity vanishes at a nonzero wavenumber. These zero-group-velocit... Read More about Backward waves with double zero-group-velocity points in a liquid-filled pipe.

Numerical simulation of fracking in shale rocks: current state and future approaches (2016)
Journal Article
Hattori, G., Trevelyan, J., Augarde, C., Coombs, W., & Aplin, A. (2017). Numerical simulation of fracking in shale rocks: current state and future approaches. Archives of Computational Methods in Engineering, 24(2), 281-317. https://doi.org/10.1007/s11831-016-9169-0

Extracting gas from shale rocks is one of the current engineering challenges but offers the prospect of cheap gas. Part of the development of an effective engineering solution for shale gas extraction in the future will be the availability of reliabl... Read More about Numerical simulation of fracking in shale rocks: current state and future approaches.