Imperial College London
Alternate

ProfessorSilvestrePinho

Faculty of Engineering, Department of Aeronautics

Professor in the Mechanics of Composites
 
 
 
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Contact

 

+44 (0)20 7594 5076silvestre.pinho Website

 
 
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Location

 

314City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

269 results found

stocchi C, Robinson P, Pinho ST, 2013, A detailed finite element investigation of composite bolted joints with countersunk fasteners, Composites Part A: Applied Science and Manufacturing, Vol: 52, Pages: 143-150, ISSN: 1359-835X

This paper presents a very detailed FE model of a single lap composite bolted joint, with countersunk fasteners, under static tensile load. The stress states of the CFRP plates and titanium bolts are discussed, the evolution of the contact between the bolts and the holes is analysed, and the numerical results are compared to experimental data. Parametric studies have been performed to study the influence of bolt clamping force, coefficient of friction and bolt–hole clearance on the joint behaviour. It has been found that the model is able to identify correctly the critical locations in the joint (head–shank transition and first thread in bolts and edges of the holes at the faying surface for the plates) and reproduce with accuracy the experimental load–displacement test curves (including an unloading–reloading loop) up to the point where bearing damage occurs. A correlation between the joint stiffness and the contact status between bolts and holes has been found. Five stages have been identified in the joint behaviour: (i) No-Slip, (ii) Slip, (iii) Full Contact, (iv) Damage and (v) Final Failure. The results show that the joint stiffness is higher in the No-Slip stage than in the Full Contact stage, and that this is independent of coefficient of friction and bolt clamping force. The clearance controls the length of the Slip stage and modifies the joint stiffness in the Full Contact stage.

Journal article

Pinho ST, Vyas GM, Robinson P, 2013, Response and damage propagation of polymer-matrix fibre-reinforced composites: Predictions for WWFE-III Part A, JOURNAL OF COMPOSITE MATERIALS, Vol: 47, Pages: 2595-2612, ISSN: 0021-9983

Journal article

Canturri C, Greenhalgh ES, Pinho ST, 2013, Dependence of interface ply orientation on delamination growth directionaliy and migration, 19th International Conference on Composite Materials

Conference paper

Melro AR, Camanho PP, Andrade Pires FM, Pinho STet al., 2013, Micromechanical analysis of polymer composites reinforced by unidirectional fibres: Part II - Micromechanical analyses, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, Vol: 50, Pages: 1906-1915, ISSN: 0020-7683

Journal article

Melro AR, Camanho PP, Andrade Pires FM, Pinho STet al., 2013, Micromechanical analysis of polymer composites reinforced by unidirectional fibres: Part I - Constitutive modelling, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, Vol: 50, Pages: 1897-1905, ISSN: 0020-7683

Journal article

Dizy J, Palacios R, Pinho ST, 2013, Homogenisation of Slender Periodic Composite Structures, 53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Honolulu, Hawaii [Lockheed Martin Best Student Paper Award], Pages: 1473-1481

Conference paper

Pimenta S, Pinho ST, 2013, Carbon Fibres, Handbook of Recycling, Editors: Worrell, Reuter, Publisher: Elsevier, ISBN: 9780123964595

Book chapter

Pinho ST, Vyas GM, Robinson P, 2013, Material and structural response of polymer-matrix fibre-reinforced composites: Part B, JOURNAL OF COMPOSITE MATERIALS, Vol: 47, Pages: 679-696, ISSN: 0021-9983

Journal article

Pimenta S, Pinho ST, 2013, Hierarchical scaling law for the strength of composite fibre bundles, Journal of the Mechanics and Physics of Solids, Vol: 61, Pages: 1337-1356, ISSN: 0022-5096

This paper presents an analytical model for size effects on the longitudinal tensile strength of composite fibre bundles. The strength of individual fibres is modelled by a Weibull distribution, while the matrix (or fibre-matrix interface) is represented through a perfectly-plastic shear-lag model. A probabilistic analysis of the failure process in hierarchical bundles (bundles of bundles) is performed, so that a scaling law relating the strength distributions and characteristic lengths of consecutive bundle levels is derived. An efficient numerical scheme (based on asymptotic limits) is proposed, hence coupon-sized bundle strength distributions are obtained almost instantaneously. Parametric studies show that both fibre and matrix properties are critical for bundle strength; model predictions at different scales are validated against experimental results available in the literature.

Journal article

Psarras S, Pinho ST, Falzon BG, 2013, Investigating the use of compliant webs in the damage-tolerant design of stiffener run-outs, COMPOSITES PART B-ENGINEERING, Vol: 45, Pages: 70-77, ISSN: 1359-8368

Journal article

Pinho ST, Chen BY, De Carvalho NV, Baiz PM, Tay TEet al., 2013, A floating node method for the modelling of discontinuities within a finite element, Pages: 516-527

Conference paper

Avgoulas EI, Tejada S, Stocchi C, Robinson P, Pinho Aeronautics Set al., 2013, Numerical and experimental investigation of composite bolted joints repaired with inserts, Pages: 337-348

Conference paper

De Carvalho NV, Chen BY, Pinho ST, Baiz PM, Ratcliffe JG, Tay TEet al., 2013, Floating node method and virtual crack closure technique for modeling matrix cracking-delamination migration, Pages: 4344-4355

Conference paper

Teixeira RF, Pinho ST, Robinson P, 2013, Representing translaminar fracture as a cohesive crack, Pages: 555-557

Conference paper

Laffan MJ, Pinho ST, Robinson P, 2013, Mixed-mode translaminar fracture: Experimental results and numerical modelling, Pages: 506-507

Conference paper

Wilmes AAR, Pinho ST, 2013, A new multi-physics molecular dynamics finite element method for designing graphene based nano-structures, Pages: 609-620

Conference paper

Laffan MJ, Pinho ST, Robinson P, 2013, Mixed-mode translaminar fracture of CFRP: Failure analysis and fractography, COMPOSITE STRUCTURES, Vol: 95, Pages: 135-141, ISSN: 0263-8223

Journal article

Wilmes AAR, Pinho ST, 2013, A New Multi-Physics Molecular Dynamics Finite Element Method for Designing Graphene Based Nano-Structures, 13th IEEE Conference on Nanotechnology (IEEE-NANO), Publisher: IEEE, Pages: 894-898

Conference paper

Chen BY, Tay TE, Baiz PM, Pinho STet al., 2013, Numerical analysis of size effects on open-hole tensile composite laminates, Composites Part A: Applied Science and Manufacturing, Vol: 47, Pages: 52-62

The tensile strength of open-hole fibre reinforced composite laminates depends on in-plane, thickness and ply lay-up scaling. Translaminar (fibre direction) mode I fracture toughness has recently been experimentally determined to be thickness dependent. This paper presents a computational study of the tensile strength prediction of open-hole laminates using a cohesive zone model. To the authors’ knowledge, it is for the first time in the literature that the thickness-dependence of translaminar fracture toughness is accounted for in the numerical modelling of composites. The thickness size effect in the strength of open-hole composite laminates failed by pull-out is accurately predicted for the first time by a deterministic model. It is found that neglecting delamination in the numerical models will lead to mesh-dependency and over-estimation on the predicted strength. Smeared crack model with cohesive elements to model delamination is able to predict the correct failure mode; but it is found not suitable for accurate strength predictions for laminates failed by delamination.

Journal article

Curiel Sosa JL, Muñoz JJ, Pinho ST, Li Q, Beg OAet al., 2012, Simulation of damage on laminates, Pages: 1940-1946

In this paper, we present a recently developed progressive damage model for composites (CPDM) that allows the switching between different damage modes during the numerical process to mimic real physical behaviour. The modelled damage modes are ranging from matrix cracking to fibre breakage or delamination. Moreover, the CPDM is flexible in the sense that provides the basic structure to include variations on the evolution of damage modes whenever appropriate by modifying basic second-order tensors. Ongoing work for potential linkage to the extended finite element method (XFEM) will be also shown.

Conference paper

Pimenta S, Pinho ST, 2012, The effect of recycling on the mechanical response of carbon fibres and their composites, COMPOSITE STRUCTURES, Vol: 94, Pages: 3669-3684, ISSN: 0263-8223

Journal article

Whiteside MB, Pinho ST, Robinson P, 2012, Stochastic failure modelling of unidirectional composite ply failure, RELIABILITY ENGINEERING & SYSTEM SAFETY, Vol: 108, Pages: 1-9, ISSN: 0951-8320

Journal article

Laffan MJ, Pinho ST, Robinson P, Iannucci L, McMillan AJet al., 2012, Measurement of the fracture toughness associated with the longitudinal fibre compressive failure mode of laminated composites, COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, Vol: 43, Pages: 1930-1938, ISSN: 1359-835X

Journal article

Melro AR, Camanho PP, Pinho ST, 2012, Influence of geometrical parameters on the elastic response of unidirectional composite materials, COMPOSITE STRUCTURES, Vol: 94, Pages: 3223-3231, ISSN: 0263-8223

Journal article

Pinho ST, Darvizeh R, Robinson P, Schuecker C, Camanho PPet al., 2012, Material and structural response of polymer-matrix fibre-reinforced composites, JOURNAL OF COMPOSITE MATERIALS, Vol: 46, Pages: 2313-2341, ISSN: 0021-9983

Journal article

De Carvalho NV, Pinho ST, Robinson P, 2012, Analytical modelling of the compressive and tensile response of woven composites, COMPOSITE STRUCTURES, Vol: 94, Pages: 2724-2735, ISSN: 0263-8223

Journal article

Melro AR, Camanho PP, Andrade Pires FM, Pinho STet al., 2012, Numerical simulation of the non-linear deformation of 5-harness satin weaves, COMPUTATIONAL MATERIALS SCIENCE, Vol: 61, Pages: 116-126, ISSN: 0927-0256

Journal article

De Carvalho NV, Pinho ST, Robinson P, 2012, Numerical modelling of woven composites: Biaxial loading, COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, Vol: 43, Pages: 1326-1337, ISSN: 1359-835X

Journal article

Pimenta S, Pinho ST, 2012, Hierarchical scaling laws for the strength and toughness of composites, 15th European Conference on Composite Materials

Conference paper

Canturri C, Greenhalgh ES, Pinho ST, Ankersen Jet al., 2012, Delamination Growth Directionality and the Subsequent Migration Processes - The Key to Damage Tolerant Design, 15th European Conference on Composite Materials

Conference paper

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