Advances in Engineering Software

Introduction......Page 1 Long-term creep......Page 2 Integration procedure......Page 3 Accuracy and stability control......Page 4 Error indicator......Page 5 Example......Page 6 Conclusions......Page 9 References......Page 10 Introduction......Page 11 Case study......Page 12 Determination of the tidal components......Page 13 Effects of neural network structure......Page 15 Long term tide forecasting......Page 16 Supplement of tidal data......Page 17 Conclusions......Page 19 References......Page 20 science047a.pdf......Page 21 science076e.pdf......Page 28 science0784.pdf......Page 37 Basic kinematics and constitutive equations......Page 39 Constitutive law......Page 40 Overview of object-oriented programming......Page 41 Basic classes and linear algebra......Page 42 Finite element classes......Page 43 Necking of a circular bar......Page 45 Impact of a copper rod......Page 46 References......Page 47 Introduction......Page 49 Governing equations......Page 50 Integral expression for potential V......Page 51 Variational form of the problem......Page 52 Approximated BE approach and efficiency of the numerical scheme......Page 53 Results obtained by using different soil models......Page 54 Conclusions......Page 56 References......Page 57 science1323.pdf......Page 58 science172c.pdf......Page 65 Fuzzy logic controller......Page 73 Neural networks......Page 74 Experimental results......Page 75 References......Page 76 Introduction......Page 77 Why use neural networks......Page 78 Use of neural networks in cold-formed steel design......Page 79 Results......Page 82 References......Page 83 science207d.pdf......Page 84 Introduction......Page 86 Design of the finite element program......Page 88 Discussion......Page 91 Results......Page 92 References......Page 93 Introduction......Page 94 A collocation approach for coupling of FE and EFG......Page 95 Linear consistency of the method......Page 96 Patch test......Page 97 Convergence test......Page 98 Pure bending of a slender beam......Page 99 Single edge cracked specimen under tension......Page 100 Discussion and conclusions......Page 101 References......Page 102 science2783.pdf......Page 103 Introduction......Page 112 Basic equations......Page 113 Discretization......Page 114 Boundary conditions......Page 116 Results and discussion......Page 117 Conclusions......Page 119 References......Page 120 Flexural wave equation......Page 121 Numerical dispersion analysis......Page 122 Spurious wave reflections......Page 123 Numerical examples......Page 124 References......Page 125 science2c26.pdf......Page 127 Introduction......Page 128 Algorithm of Goldfarb and Idnani......Page 129 Implementation remarks......Page 130 Example 1......Page 131 Shape optimisation of shells......Page 132 References......Page 133 Introduction......Page 134 Advancing front method......Page 135 Extension of mesh generation to curved surfaces......Page 137 Error estimation in nonlinear FE shell analysis......Page 138 Determination of the mesh density function for adaptive mesh refinement......Page 139 Geometric dimensions and material properties......Page 140 Loading conditions......Page 141 Mesh generation......Page 142 Analysis based on uniform mesh refinement......Page 143 Analysis based on adaptive mesh refinement......Page 145 Summary and conclusions......Page 146 References......Page 147 Introduction......Page 148 Description of the method......Page 149 A simple application in heat transfer......Page 150 Remarks......Page 152 References......Page 153 Introduction......Page 154 Robinson’s viscoplastic model derivation......Page 155 Boundary element formulation......Page 156 Matrix formulation and solution strategy......Page 157 Analytical solutions......Page 158 Boundary element model......Page 159 Example 1......Page 160 Example 3......Page 162 Conclusions......Page 163 References......Page 164 Related work on multi-agent design system......Page 166 The architecture of a multi-agent cooperative design environment......Page 167 Design agent......Page 168 Communication language among design agents......Page 170 Outline placeholder......Page 0 The improved genetic algorithm......Page 171 A mobile phone design example......Page 173 References......Page 175 Introduction......Page 176 Constitutive equations of SUMT network......Page 177 Constitutive equations of SUMT network with additional penalty......Page 178 Algorithm of GHN based SUMT with additional penalty strategy......Page 179 Example 1. An asymmetrical three-bar truss design with discrete variables......Page 180 Example 2. A reinforced concrete beam design with mixed variables......Page 181 Computational remarks and discussions......Page 182 References......Page 183 Introduction......Page 185 Modelling......Page 186 Parameters identification......Page 187 3D simulations......Page 188 Shell analyses versus 3D computations......Page 189 Determination of the shell coefficients......Page 190 Structural analysis of a tubed cyclone......Page 191 Conclusions......Page 192 References......Page 193 science5a53.pdf......Page 195 Introduction......Page 207 Heat flow......Page 208 Primary variable switching scheme......Page 209 Spatial discretisation......Page 210 Temporal discretisation......Page 212 Sample analysis......Page 213 References......Page 215 Non-sequential and sequential random search......Page 217 Line/trajectory methods......Page 218 Root search using the closed loop control system with fuzzy logic controller......Page 219 Global optimization by using closed loop control system......Page 223 References......Page 225 science60e7.pdf......Page 227 science60fc.pdf......Page 229 science6136.pdf......Page 243 Composite structures optimization......Page 244 The structural optimization problem......Page 245 Approximations of the MMA family......Page 246 Approximations of the GMMA family......Page 247 Modifications of the approximations of the GMMA family......Page 248 A dual solution scheme......Page 249 Selection of the approximation scheme for optimal orientation in laminates......Page 250 A generalized approximation scheme of the MMA family......Page 251 Laminate optimization over the fibers orientations......Page 252 Laminate optimization over the fibers orientations and the plies thickness......Page 254 Comparison of computational cost......Page 255 References......Page 257 The simplex method......Page 259 The revised simplex method......Page 260 Amelioration of the revised simplex method......Page 261 Parallelisation of the algorithm &f;(&scr;A&/scr;&m.inf;B&m.sup;−1&/m.sup;&/m.inf;)&/f;......Page 262 Application of the algorithm &f;(&scr;A&/scr;&m.inf;B&m.sup;−1&/m.sup;&/m.inf;)&/f; to the Gauss–Jordan method......Page 263 Numerical examples......Page 264 Conclusion......Page 266 References......Page 267 Introduction......Page 268 Kinematic and constitutive equations......Page 269 System of equations......Page 270 Orthonormalization of constraints......Page 271 Examples......Page 272 Conclusions......Page 273 References......Page 274 Modelling......Page 276 Simulating a crystallizer......Page 277 Simulating a crystallizer circuit......Page 278 Simulation of batch crystallizers......Page 279 Simulation of continuous industrial crystallizers......Page 280 Creation of a graphical user interface......Page 281 Database of solute/solvent system properties......Page 282 Example simulation and discussion......Page 283 References......Page 284 science69b2.pdf......Page 286 Introduction......Page 293 Definition of the error estimator......Page 294 Construction of &f;(σ&m.inf;&rm;DA&/rm;&/m.inf;,&m.unl type=......Page 296 Numerical tests on time-only problems......Page 297 Problems involving both time and space......Page 299 Construction of the error indicator for the time integration scheme......Page 300 Conclusions......Page 302 References......Page 303 Introduction......Page 304 Simulated annealing......Page 305 Numerical examples......Page 307 References......Page 309 science7873.pdf......Page 310 Introduction......Page 319 The Simpack database concept......Page 320 Mathematical modelling......Page 323 Vehicle modelling......Page 324 Multibody system algorithm for the full vehicle simulation......Page 325 Car body shell......Page 327 The fully assembled intermediate car......Page 328 References......Page 330 Introduction......Page 331 Locally optimal meshes......Page 332 Problem one......Page 334 Problem two......Page 336 Problem three......Page 338 Three dimensions......Page 340 Conclusion......Page 342 References......Page 343 science8366.pdf......Page 344 Geometric model of bridge decks......Page 355 Cross-section shape......Page 356 Generation of cross-sections along the deck......Page 357 Cross-sections adapted to the geometry of the road......Page 358 Cross-section drawing......Page 359 3D-face model of the deck......Page 360 Discretisation of the deck......Page 361 Example of application......Page 362 References......Page 363 science8428.pdf......Page 364 Introduction......Page 377 Description of problem......Page 378 Grid generation......Page 379 Flow solver......Page 380 Discussion of results......Page 382 Conclusions......Page 385 References......Page 388 Introduction......Page 389 Implicit schemes: the generalized-alpha trapezoidal scheme......Page 390 Introduction......Page 391 Error estimator......Page 392 Time step size control......Page 393 Selective updating of the inverse Hessian matrix......Page 395 Numerical examples......Page 396 Academic case 1: contact of an elastic bar......Page 397 Academic case 4: 3D-Taylor’s bar......Page 398 Academic case 5: dynamic buckling of a 3D-bar......Page 400 Industrial case 2......Page 402 References......Page 403 Introduction......Page 404 Bubble graph representation......Page 405 Results......Page 407 Final comparison and conclusions......Page 409 References......Page 410 Introduction......Page 411 Iterative procedure for solving exterior boundary value problems......Page 412 Exact solution......Page 413 Interior boundary value problem solution......Page 414 Numerical example......Page 415 Conclusions......Page 416 References......Page 417 science9408.pdf......Page 418 Introduction......Page 434 Description of FRANC3D/BES......Page 435 Parameters for the test problem......Page 437 Numerical results......Page 438 Numerical results......Page 439 Effective stiffness of multiple crack system......Page 442 Numerical results......Page 443 References......Page 444 Introduction......Page 445 Mixed time integration algorithm......Page 447 Parallel implementation of mixed time integration algorithm......Page 449 Numerical studies......Page 450 Conclusions......Page 454 References......Page 455 Introduction......Page 456 Sharing scheme and mating restriction......Page 457 Niche identification......Page 458 Niche interference modification......Page 459 Sharing implementation with NIT......Page 460 First numerical problem-F1......Page 461 Second numerical problem-F2......Page 462 Two-beam grillage problem-E1......Page 464 Two-beam grillage problem-E2......Page 465 Discrete ten-variable bump function......Page 466 Concluding remarks......Page 467 References......Page 468 scienceaa0d.pdf......Page 469 Introduction......Page 476 Conceptual framework......Page 477 System design......Page 479 Performance recording......Page 480 Dissemination......Page 482 Using the e-Reporting system for dynamic decision support......Page 483 References......Page 485 scienceabd8.pdf......Page 487 scienceae4b.pdf......Page 499 Introduction......Page 510 Spatial geological data with discrete measured points......Page 511 Bedding planes with fault discontinuity......Page 512 Application and discussion......Page 513 Conclusion......Page 516 References......Page 517 Discrete wavelet transform......Page 518 Solving dense systems with non-smooth zones......Page 519 Parallel implementation of the wavelet transform......Page 522 Numerical results......Page 524 References......Page 527 Introduction......Page 528 Simulation 3......Page 529 Distance between the model and the modification......Page 530 Interpreter......Page 531 Applications of the program......Page 532 Discussion......Page 535 References......Page 536 scienceb23a.pdf......Page 537 scienceb34a.pdf......Page 544 Introduction......Page 556 Reference problem......Page 557 Global linear stage at iteration n......Page 558 Local stage at iteration n......Page 559 Example one: two specimens crushing......Page 562 Example two: beam with interface of plasticity......Page 563 Example three: bolted structure......Page 564 References......Page 565 Sparse approximate inverse computation......Page 566 Some remarks on reordering......Page 568 Iterative solver......Page 569 Numerical experiments......Page 570 References......Page 573 Introduction......Page 575 Design of sub-controllers......Page 576 Fuzzy inference......Page 577 Numerical examples......Page 578 Design of LQR sub-controllers......Page 579 Fuzzy tuning of LQR sub-controllers......Page 580 References......Page 582 Introduction......Page 583 Electronic trade architecture......Page 584 Trade logic......Page 585 Trade protocol......Page 586 Algorithm......Page 587 Software implementation......Page 588 Scalability through concurrency......Page 590 Test results......Page 591 Acknowledgements......Page 592 References......Page 593 Introduction......Page 594 Beowulf cluster......Page 595 Formulation of the Navier-Stokes code......Page 596 Discretization......Page 597 Time measures......Page 598 Parallel measurement......Page 599 Speedup and efficiency......Page 600 Times of execution and parallel aspects......Page 601 Analysis of the Navier-Stokes code performance......Page 602 Number of time steps and mflops......Page 603 Times of execution and parallel aspects......Page 605 Cubic cavity......Page 608 Unsteady 2D cylinder......Page 609 References......Page 610 sciencec289.pdf......Page 611 Interactive VR......Page 612 Framework and modules......Page 614 Module communication......Page 616 Results......Page 617 References......Page 618 Introduction......Page 619 Soil model and parameters......Page 620 Finite element analysis model......Page 621 Force-time load......Page 622 Peak particle velocity at ground surface-the environmental aspect......Page 623 Discussions......Page 624 Multiple drops......Page 625 References......Page 627 sciencec836.pdf......Page 629 sciencec919.pdf......Page 640 Introduction......Page 656 Constraint handling......Page 657 Size, shape and topology design......Page 658 Cooling schedule......Page 660 Formation of candidate design......Page 661 Boltzmann parameter and weighted Boltzmann parameter......Page 662 Critical Boltzmann parameter......Page 663 224-member 3D truss pyramid......Page 664 Physical design area problem......Page 667 References......Page 671 scienced276.pdf......Page 672 Introduction......Page 682 Global boundary integral equations......Page 683 Local boundary integral formulation for meshless approximation......Page 685 Square patch test......Page 686 Circular patch test......Page 687 References......Page 688 scienced618.pdf......Page 690 Introduction......Page 695 Problem definition......Page 697 Field variable expansions......Page 698 Coupled vibro-acoustic wave model......Page 699 Convergence......Page 700 Comparison with the finite element method......Page 704 Three-dimensional validation example......Page 705 References......Page 708 scienceea4c.pdf......Page 709 scienceeed0.pdf......Page 719 sciencef340.pdf......Page 724 Introduction......Page 735 Software......Page 736 Demonstration example problem......Page 738 Summary and conclusions......Page 739 References......Page 740 Introduction......Page 741 Regular meshes......Page 743 Size-constrained regular meshes......Page 744 Unit discretization of Sigma, the boundary of domain Omega......Page 745 Unit mesh of domain Omega......Page 747 Point insertion......Page 748 Optimization processes......Page 749 Application example......Page 750 References......Page 751 Background-time-integration algorithms......Page 752 Motivation and approach......Page 753 Algorithm derivation......Page 754 Computational form of the algorithm......Page 756 Algorithmic characteristics......Page 758 Numerical studies......Page 759 Object-oriented implementation......Page 760 References......Page 762 Introduction......Page 763 Constrained optimization with neural networks......Page 764 Superpotential modelling of the problem......Page 765 Numerical application......Page 769 References......Page 771 sciencefc1e.pdf......Page 773 Introduction......Page 787 Back-propagation neural networks approach......Page 788 Microtremor measurements and ground peak acceleration estimations......Page 791 Summary and conclusion......Page 794 References......Page 796