ACME 2011 Proceedings of the 19 UK National Conference of the ...

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MATERIAL PLASTIC PROPERTIES CHARACTERIZATION COUPLING EXPERIMENTAL AND NUERICAL ANALYSIS OF SMALL PUNCH BEAM TESTS Xingguo Zhou, Wenke Pan, Donald Mackenzie 61 CDPM2: A DAMAGE-PLASTICITY APPROACH TO MODEL THE DYNAMIC FAILURE OF CONCRETE Peter Grassl 65 A HYSTERETIC MODEL FOR STEEL PLATE SHEAR WALLS A. Faramarzi, M. Mehravar, H. Veladi, A. A. Javadi, A. Ahangar-Asr, M. Mehravar 69 Multiscale A ROBUST LOCAL ARC-LENGTH METHOD FOR MULTISCALE PROBLEMS Ahmad Akbari R., Pierre Kerfriden, Timon Rabczuk and Stephane P.A. Bordas 73 A MICROMECHANICS-ENHANCED FINITE ELEMENT FORMULATION C.J. Pearce, Ł. Kaczmarczyk, P. Grassl and J. Novak 77 AN ALGORITHM FOR GENERATION OF 3D MESOSTRUCTURE OF CONCRETE FOR FINITE ELEMENT ANALYSIS Zhenhuan Song, Yong Lu 81 MACRO AND MESO SCALES MODELS TO PREDICT CONCRETE FAILURE AND SIZE EFFECT L.B. Rojas-Solano, P. Grassl, D. Grégoire and G. Pijaudier-Cabot 85 AN ALTERNATIVE TO MULTISCALE SIMULATORS BASED ON MODEL ORDER REDUCTION FOR NONLINEAR FRACTURE MECHANICS P. Kerfriden, Lee Margetts and S. Bordas 89 Fracture and Failure Mechanics MODELLING DAMAGE, FRICTION AND DILATANCY ON STRUCTURAL INTERFACES USING COHESIVE-ZONE MODELS Giulio Alfano and Roberto Serpieri 93 COHESIVE CRACKING EVOLUTION IN CONCRETE COVER DUE TO REINFORCEMENT CORROSION Hua-Peng Chen, Nan Xiao 97 AN INTERFACE FAILURE CRITERION IN A MICROMECHANICAL MODEL FOR CONCRETE Iulia Mihai and Tony Jefferson 101 OVERLOAD EFFECT IN FATIGUE CRACK GROWTH USING A COHESIVE ZONE MODEL H. Dahlan and K. Davey 105 ON THE MESH DEPENDENCE OF LATTICE MODELS FOR ANALYSING CONCRETE FRACTURE Caroline Fahy, Domenico Gallipoli and Peter Grassl 109 REDUCED ORDER MODELING FOR NONLINEAR FRACTURE MECHANICS IN A DOMAIN DECOMPOSITION FRAMEWORK Olivier Goury, Pierre Kerfriden, Lee Margetts and Stephane P. A. Bordas 113 A SCALED BOUNDARY FINITE ELEMENT METHOD FOR NONLINEAR DYNAMIC CRACK PROPAGATION MODELLING E.T. Ooi and Z.J. Yang 117
A DAMAGE-MECHANICS-BASED RATE-DEPENDENT COHESIVE-ZONE MODEL M. Musto, G. Alfano 121 MODELLING OF FRP-TO-CONCRETE BOND BEHAVIOUR Y. Tao and J. F. Chen 125 Dynamics and waves TIME DOMAIN 3D FINITE ELEMENT MODELLING OF TRAIN-INDUCED VIBRATION AT HIGH SPEED A. El-Kacimi, P. Woodward, O. Laghrouche and G. Medero 129 WAVE IMPLEMENTATION IN BLADE ELEMENT MOMENTUM THEORY FOR MODELLING TIDAL STREAM TURBINES H. C. Buckland, I. Masters and J. Orme 133 DEVELOPMENT OF A FINITE VOLUME ALGORITHM FOR A NEW CONSERVATION LAWFORMULATION IN STRUCTURAL DYNAMICS Chun H. Lee, Antonio J. Gil and Javier Bonet 137 USING GRADIENT ELASTICITY THEORIES WITH MICRO-INERTIA TO INCREASE THE CRITICAL TIME STEP Harm Askes, Duc C.D. Nguyen and Andy Tyas 141 NUMERICAL MODELLING OF THE DYNAMIC BEHAVIOUR OF A SOIL DEPOSIT OVERLYING BEDROCK N. Hamdan, O. Laghrouche, A. El Kacimi, P.Woodward and G. Medero 145 TWO-STEP TAYLOR GALERKIN FORMULATION IN LAGRANGIAN SOLID DYNAMICS Izian Abd Karim, Javier Bonet and Antonio J. Gil 149 UPDATING FINITE ELEMENT MODEL FROM VIBRATION MEASUREMENTS Maung Than Soe, Hua-Peng Chen, Kong Fah Tee, and Amir M. Alani 153 CONTROLLING THE CRITICAL TIME STEP VIA THE BIPENALTY METHOD Jack He<strong>the</strong>rington, Antonio Rodriguez-Ferran and Harm Askes 157 DYNAMIC MODELLING USING MIXED STRESS ELEMENTS G. Edwards, C.J. Pearce and Ł. Kaczmarczyk 161 NUMERICAL CACULATIONS OF DYNAMIC PRESSURE DURING HOPPER DISCHARGE USING AN UNCOUPLED ALE-FORMULATION Yin Wang, Y. Lu and Jin. Y. Ooi 165 ENERGY CONSERVATION OF THE NEWMARK METHOD FOR DYNAMIC CONTACT ANALYSIS H. Zolghadr Jahromi and B.A. Izzuddin 169 INVESTIGATION OF A NEW ABSORBING BOUNDARY CONDITION FOR TIME STEPPING SIMULATION OF SEMI-INFINITE ELASTIC MEDIA G. B. White, A. H. Nielsen and O. Laghrouche 173 Flow in Porous Media / Fluid Dynamics / Fluid-Structure Interaction COMPUTATIONAL MODELLING OF CONTAMINATED LAND: DEVELOPMENT OF A COMBINED STOCHASTIC-DETERMINISTIC MODEL FOR MASS TRANSFER IN VARIABLY SATURATED POROUS MEDIA Jack M. Barnard and Charles E. Augarde 177
Page 1: ACME 2011 Proceedings of the 19 th
Page 4 and 5: First published 2011 by Heriot-Watt
Page 7: CONTENTS Invited Lectures CHALLENGE
Page 11: A PROJECTED QUASI-NEWTON METHOD FOR
Page 14 and 15: minimise the strain energy density.
Page 16 and 17: through individual rock blocks and
Page 18 and 19: (a) Finite element mesh (b) Gas mes
Page 21 and 22: Proceedings of the 19 th UK Confere
Page 23 and 24: T E −1 ( ) ( ) T ∂s ∂T − du
Page 27 and 28: nondimensional tangential velocity
Page 31 and 32: Figure 2: Results for an open arter
Page 35 and 36: (a) Abaqus model von Mises stress (
Page 39 and 40: Vle Vli De Di k1 (MPa) 8.34 2.11 1.
Page 43 and 44: 3 RESULTS AND DISCUSSIONS In this p
Page 47 and 48: The potential energy U of the tunne
Page 51 and 52: where the problem is formulated in
Page 55 and 56: Figure 1: 2D slope model geometry (
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Figure 1. Comparison between the pr
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Proceedings of the 19 th UK Confere
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following anisotropic hardening rel
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that R Γ Spin[N]XdΓ = 0, the func
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4 INCORPORATING EPRCM IN FEA The de
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No distinct yield point is observed
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stress [MPa] 1 0 -1 -2 -3 -2.5 -2 -
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ecomes available, the material mode
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where ∂fin ∂UM force 2.5 2 1.5
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Practicallly, the perturbation fiel
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3 SIMULATING CONCRETE MESO-STRUCTUR
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¯K i is an approximation of the co
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h = 5.36 matrix 4.3 z P E f νf 0.9
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From the total hoop strainε θ , t
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3 EXTERIOR POINT ESHELBY BASED CRAC
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is applied uniformly on the edge to
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(a) (b) (c) (d) Figure 1: Influence
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On each subdomain, we then have to
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( i�1) ( i�1) �Un�1 � ε
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� ~ � 1 ψ ~ � � ~ (2) �
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For the case of uni-axial tension,
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3 Numerical results Preliminary num
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The coefficients An cannot be deriv
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The spatial semi-discretisation is
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3 CRITICAL TIME STEP INCREASED WITH
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v/vo 2E-05 1.5E-05 1E-05 5E-06 0 -3
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3 RESULTS AND DISCUSSION Fig. 1a sh
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Model updating from eigenvalue and
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1. If R = ω 2 n, there is no eigen
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F = ´ Ω STv CSv dΩ A = ´ Γ U
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Fig. 3 Wall normal pressure in the
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contact contact (ii). f ≈ f ( d,
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In the analysis of the incident P-w
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elow a certain threshold. In both t
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K/d 2 Effective Permeability 0.0032
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METHOD 2 (Mellor and Herring Type)
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(a) Free Surface Profile from Janos
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2 IMMERSED FLUID SOLVER Consider th
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References [1] R. Mittal and G. Iac
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a second impact on the forward fuse
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Acknowledgement L. Papagiannis is f
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acceptable probability throughout t
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algorithm was then responsible for
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strategy of saving the computationa
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(a) (b) Figure 5. Comparison of (a)
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Thermal load step i i i i Update ,
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Displacement (mm) Conclusions 45 40
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load carrying of the structure to b
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compressive stress field between co
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Unbonded flexible pipes and risers
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Figure 2: (a) Riser configuration (
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Furthermore the total strain varies
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Displacement 14 12 10 8 6 4 2 0 Mem
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As this project was in the conceptu
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kg and additional mass to represent
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1 Step make box 2 Step make cylinde
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element method. The solid model is
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just new element classes) without t
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Fig.4. Frame model and the displace
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capacities to meet with such demand
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esponses. Severe cases are to be co
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2 Numerical results In this section
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the frequency intially increases un
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and F (R) = ⎡ ⎢ ⎣ ... UαT (R
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Merit function g 10 1 10 0 10 -1 10
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2 STRUCTURAL CHARACTERISTICS OF PTM
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Fig. 5. Simplified FE model of a PT
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general the computational results o
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References [1] Ainsworth M, Oden JT
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Error Cause Interpolation Error Ele
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(a) Before Improvement (b) After Im
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een applied to FE fluid flow proble
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Acknowledgements Figure 2: Flowchar
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1 1 ′′ 1 ′′′ 3 ′′ 2
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3 COMBINING SHAPE FUNCTIONS The exp
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electron current). For the case of
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electron concentration (1/cm 3 ) x
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2 CONSERVATION LAW FOR A MOVING CV
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5 NUMERICAL RESULTS A 1-D cellular
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FEM can be found in [3]. In this pa
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h Y 1 0 −1 −2 −3 −4 −5
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applications. The partition of unit
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1.1 1.05 1 0.95 0.9 0.85 0.8 0.75 2
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2 NURBS BASIS FUNCTIONS NURBS are a
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4 RESULTS To illustrate the isoBEM
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290
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1 1 2 { σ ( ξ, s) } = [ D] { ε (
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4.4 Example 4 - A single edge crack
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