Giles W Hunt
University of Bath
PhysicsEngineeringMathematical analysisFinite element methodNonlinear systemComposite materialBoundary value problemMaterials scienceHomoclinic orbitInstabilityGeometryShell (structure)BifurcationMathematicsAxial symmetryOrdinary differential equationMechanicsStructural engineeringDelaminationClassical mechanicsBuckling
152Publications
33H-index
4,216Citations
Publications 135
Newest
#1Giles W HuntH-Index: 33
#2M. Ahmer WadeeH-Index: 21
Last. Mark A. PeletierH-Index: 27
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#1Rainer Groh (UoB: University of Bristol)H-Index: 16
#2Giles W HuntH-Index: 33
Last. Alberto Pirrera (UoB: University of Bristol)H-Index: 21
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Abstract Recent experimental and numerical results have illustrated the importance of spatially localised buckling modes in the loss of stability of axially compressed cylinders. Particular interest has focused on a single localised dimple that circumferentially multiplies along a post-critical equilibrium path of oscillating end-shortening—a phenomenon known as snaking. In contrast, multi-dimple buckling modes and their snaking equilibrium paths have not been studied in detail. In this work, tw...
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#1Giles W HuntH-Index: 33
#1Giles Hunt (UoB: University of Bristol)
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#1Giles W HuntH-Index: 33
#2Rainer Groh (UoB: University of Bristol)H-Index: 16
Last. Timothy Dodwell (University of Exeter)H-Index: 13
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Numerical results for the axially compressed cylindrical shell demonstrate the post-buckling response snaking in both the applied load and corresponding end-shortening. Fluctuations in load, associ...
1 CitationsSource
#1Alan R ChampneysH-Index: 53
#2Timothy Dodwell (University of Exeter)H-Index: 13
Last. M. Ahmer Wadee (Imperial College London)H-Index: 21
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A synthesis of recent progress is presented on a topic that lies at the heart of both structural engineering and nonlinear science. The emphasis is on thin elastic structures that lose stability subcritically --- without a nearby stable post-buckled state --- a canonical example being a uniformly axially-loaded cylindrical shell. Such structures are hard to design and certify because imperfections or shocks trigger buckling at loads well below the threshold of linear stability. A resurgence of i...
10 CitationsSource
We demonstrate the complexity that can exist in the modelling of auxetic lattices. By introducing pin-jointed members and large deformations to the analysis of a re-entrant structure, we create a m...
5 CitationsSource
#1Andrew Rhead (University of Bath)H-Index: 10
#2Richard Butler (University of Bath)H-Index: 21
Last. Giles W Hunt (University of Bath)H-Index: 33
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Compression After Impact (CAI) strength is critical to the safety and weight of carbon fibre aircraft. In this paper, the standard aerospace industry practice of using separate analyses and tests for panel buckling and CAI strength is challenged. Composite panels with a range of stacking sequences were artificially delaminated and subject to compression testing in a fixture that allowed local sublaminate and global panel buckling modes to interact. Compared to panels without delamination, intera...
24 CitationsSource
#1Martin PaesoldH-Index: 6
#2Timothy Dodwell (University of Exeter)H-Index: 13
Last. Giles W Hunt (University of Bath)H-Index: 33
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A model of geological folding comprising a thin elastic beam supported by a nonlinear viscoelastic (Kelvin-Voigt) material is subjected to a slow rate of applied end-shortening. The description reduces to the nonlinear Swift-Hohenberg partial differential equation (PDE), supplemented by a constraint condition. A modified one degree-of-freedom Galerkin description is introduced, built by adopting the evolving modeshapes of the corresponding statical equilibria at the same state of compression. An...
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#1Timothy Dodwell (University of Bath)H-Index: 13
#2Richard Butler (University of Bath)H-Index: 21
Last. Giles W Hunt (University of Bath)H-Index: 33
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If carbon fibre layers are prevented from slipping over one another as they consolidate onto a non-trivial geometry, they can be particularly susceptible to wrinkling/buckling instabilities. A one dimensional model for out-of-plane ply wrinkling during consolidation over an external radius is presented. Critical conditions for the appearance of wrinkles provide manufacturing strategies to eliminate such defects. Predicted wrinkle wavelengths and critical wrinkling conditions show good agreement ...
52 CitationsSource
#1Timothy Dodwell (University of Bath)H-Index: 13
#2Giles W Hunt (University of Bath)H-Index: 33
An energy-based model is developed to describe the periodic formation of voids/saddle reefs in hinge zones of chevron folds. Such patterns have been observed in a series of experiments on layers of paper, as well as in the field. A simplified hinge region in a stack of elastic layers, with straight limbs connected by convex segments, is constructed so that a void forms every m layers and repeats periodically. Energy contributions include strain energy of bending, and work done both against a con...