Advances in Engineering Software

Introduction......Page 1 Methodology-an overview......Page 2 Finite element model of the thin part......Page 3 Material removal simulation......Page 4 Model transformation strategies......Page 5 System implementation......Page 9 Conclusions......Page 10 References......Page 11 Introduction......Page 12 Numerical examples and gem formulation......Page 13 Results and discussion......Page 18 References......Page 20 Introduction......Page 21 Related work......Page 24 An algorithm for generating self-avoiding walks......Page 25 Quality measure of SAWs......Page 27 Computing mesh intersections......Page 28 Experiment results......Page 30 References......Page 32 Introduction......Page 34 System equations of motion......Page 35 Class definition......Page 36 Numerical analysis......Page 37 Application......Page 39 Conclusion......Page 41 References......Page 42 Definition of the n Gaussian JPMFs......Page 43 Evaluation of the n Gaussian JPMFs parameters......Page 44 Numerical application and results......Page 45 Conclusions......Page 46 References......Page 47 Introduction and background to work......Page 48 Methodology......Page 50 Concept map......Page 52 Informal rules for constructability assessment......Page 55 Examples of informal constructability rules for portal frame design......Page 56 A framework for distributed constructability knowledge acquisition and management......Page 57 Conclusions and further work......Page 58 References......Page 59 Hydro-geotechnical conditions......Page 61 ‘Grand casino’: back-analysis on a similar case......Page 63 Finite element model characteristics......Page 64 Reference case results......Page 65 Conclusion......Page 68 References......Page 70 Introduction......Page 71 A framework for an automated bridge imaging inspection system......Page 72 Problem definition......Page 73 Relational data modeling......Page 75 Computer modeling......Page 76 References......Page 78 Introduction......Page 79 Parallelization of the optimization procedure......Page 80 Load scheduling scheme......Page 81 Components of the environment......Page 82 Object-oriented design......Page 83 Implementation......Page 84 An numerical example......Page 85 References......Page 86 Introduction......Page 87 Formulation of a homogenization problem on a periodic cell of a geo-composite......Page 89 Derivation of finite element equation system......Page 91 Algorithm of numerical evaluation of tangent stiffness of a composite......Page 92 Specialized finite elements......Page 93 Finite element models of the geo-composite in two modeling options......Page 95 Initial elastic stiffness of the geo-composite......Page 96 Simulation of strain controlled test......Page 97 Stresses and deformation in the micro-structure......Page 98 Conclusions......Page 99 References......Page 100 The basic components of the environment......Page 101 Hierarchical rule-based expert system......Page 102 Multimodal interfaces......Page 104 Appendix A......Page 106 Appendix B......Page 107 References......Page 109 Introduction......Page 110 Unconstrained optimization algorithms in NN training......Page 111 The adaptive sigmoid activation function......Page 112 The basic idea of adaptation......Page 116 Rank-deficiency......Page 117 Hybrid ES-NN methodology......Page 118 Numerical tests......Page 119 Sizing optimization test examples......Page 120 Shape optimization test example......Page 123 References......Page 126 Introduction......Page 127 Interfacing C libraries from Ch space......Page 128 Program in Ch space......Page 129 Building dynamically loaded library......Page 130 Example 1......Page 133 Example 3......Page 134 References......Page 136 science2fd7.pdf......Page 137 Component-oriented software development......Page 138 Component-oriented technologies......Page 140 Differences between object-oriented and component-oriented software......Page 141 Object model......Page 142 Example usage......Page 144 Performance......Page 146 Conclusion......Page 148 References......Page 149 Introduction......Page 150 Organization of COMPARE......Page 151 Analysis module......Page 152 Sensitivity module......Page 153 Optimization module......Page 154 Experimental data processing: the database manager......Page 155 Project file......Page 157 The COMPARE graphical user interface in C++......Page 158 Main COMPARE interface window......Page 160 References......Page 164 Introduction......Page 166 Hierarchy of classes......Page 168 Refinement algorithm......Page 169 Algorithm implementation......Page 171 References......Page 175 Presentation of the software......Page 176 Task definition......Page 177 Sampling methods......Page 178 Statistical post processing......Page 180 A model problem......Page 183 A rear frame crash......Page 185 Conclusion......Page 187 References......Page 188 Reduction of computation time......Page 189 Simulation model......Page 191 Modeling of damping......Page 193 Verification of the model......Page 194 Local analysis......Page 196 Hertz contact stress......Page 197 Concluding remarks......Page 199 References......Page 200 science392f.pdf......Page 201 Introduction......Page 206 Related work......Page 207 Rationale for experiment management......Page 208 Client layer......Page 209 Server layer......Page 210 Scenario......Page 211 Acknowledgements......Page 213 References......Page 214 Introduction......Page 215 Relocation transparency......Page 216 The migration model......Page 217 Migration example......Page 218 References......Page 219 Introduction......Page 220 Equations of motion for multibody systems......Page 221 Resolution of multibody systems equations......Page 222 Object-oriented concepts......Page 224 Description of the basic classes......Page 225 Description of the class Domain......Page 228 Example 2: winding of an embedded beam......Page 229 Example 3: three-bar mechanism......Page 231 Conclusions......Page 232 References......Page 233 science4a72.pdf......Page 235 Astronomical bases of calendars......Page 236 The Khayyami calendar......Page 237 Description of algorithms......Page 239 Conclusion......Page 240 References......Page 241 Introduction......Page 242 Structure topology optimization problem......Page 243 Shape derivative of material interfaces......Page 245 Nonlinear velocity mapping algorithm......Page 246 Return mapping algorithm......Page 247 Summary of the presented algorithm......Page 248 Numerical examples......Page 249 A topological derivative and level set algorithm for topological optimization......Page 256 Topological derivative with multi-material structures......Page 257 Topological derivative and level set algorithm for topological optimization......Page 261 Numerical examples......Page 262 References......Page 267 science5e02.pdf......Page 269 Erratum to ‘‘Estimation of consolidation settlement caused by groundwater drawdown using artificial neural networks’’ [Advances......Page 270 Introduction......Page 272 Topology optimisation method......Page 273 Topology optimisation of a rear suspension subframe......Page 275 References......Page 279 Introduction......Page 281 Improvements of the standard binary genetic algorithm......Page 282 The differential evolution algorithmic scheme......Page 283 Test computations......Page 284 Testing and results......Page 285 The SADE algorithm extended by the CERAF method......Page 286 Conclusions......Page 287 List of test functions......Page 288 References......Page 289 Intelligent systems in schools......Page 291 Inteligent tuturing system ES-STATFAG......Page 292 STATFAG-CAD......Page 293 Example of use......Page 298 References......Page 300 science6a54.pdf......Page 302 Object-oriented distributed computing......Page 303 Object-oriented finite element analysis module......Page 304 CORBA implementation of finite element analysis......Page 307 Multi-client single-server computing......Page 308 Parallel finite element computing using Java threads in a CORBA environment......Page 309 Mechanism used in distribution and parallelism......Page 310 Performance studies......Page 313 Discussion......Page 314 References......Page 315 Introduction......Page 316 The computer implementation......Page 317 The OpenMP API......Page 318 The ScaLAPACK library......Page 319 Parallel results summary......Page 320 Conclusions......Page 322 References......Page 323 Introduction......Page 324 General design of a multi agent system......Page 325 Generic reconfigurable computing environment......Page 326 Overall software/hardware agent environment......Page 327 Hardware agent models......Page 328 Design of multi hardware agent systems to implement finite state machines......Page 329 Use of hardware agents to implement a general sequence detector......Page 330 Design of a multi hardware agent system to implement a signature analyzer......Page 331 References......Page 335 Introduction......Page 337 Design of control system in modal space......Page 338 Preference-based optimization model......Page 339 Integrated design by genetic algorithm......Page 340 Example structure......Page 341 Numerical results......Page 342 Acknowledgements......Page 345 References......Page 346 Introduction......Page 347 2D-modelling description and problem results......Page 348 Results......Page 352 Butt-joint three-dimensional modelling......Page 353 Three-dimensional analysis result......Page 355 References......Page 356 Introduction......Page 357 ANFIS controller for the SRM......Page 358 Hardware......Page 360 Software......Page 362 Experimental results......Page 363 References......Page 365 Introduction......Page 366 Database server with object-relational mapping......Page 367 Administration......Page 368 Classes describing experiments......Page 369 Classes describing material components......Page 370 Classes defining idealizations......Page 371 Process model......Page 372 References......Page 375 Introduction......Page 376 Extensible object-relational database technology......Page 377 Structural dynamic analysis using component mode synthesis......Page 378 Database technology for component mode synthesis......Page 379 Matrix representation and operations......Page 380 Data integration......Page 383 References......Page 385 Introduction......Page 387 Hierarchical multi-agent system architecture......Page 388 The task-oriented collaborative design process model......Page 390 The structure of a design agent......Page 391 The design knowledge......Page 392 Knowledge update......Page 394 A collaborative design example......Page 395 References......Page 396 Introduction......Page 397 Fundamental fuzzy concepts......Page 398 Collaborative decision-making steps......Page 399 Development environment......Page 403 System organization......Page 404 User interface design......Page 408 System operation example......Page 409 Discussion and conclusion......Page 410 References......Page 411 Introduction......Page 412 Positioning live loads on bridge......Page 413 Neural networks......Page 414 Network configurations for single column piers......Page 415 Network configurations for multiple column piers......Page 416 References......Page 418 Introduction......Page 420 System architecture......Page 421 System operations and development environment......Page 422 PRE Module development......Page 423 SOLVER Module......Page 424 POST Module......Page 425 Application......Page 426 References......Page 428 science8506.pdf......Page 430 Usage of virtual prototypes......Page 431 Background to the system......Page 432 System overview......Page 433 Conceptual model used in the system......Page 434 Development of the system......Page 435 Mesh extraction......Page 436 Calculation using the data stored in the database......Page 437 References......Page 438 Introduction......Page 440 Cluster validity index......Page 441 Limiting behavior......Page 442 &f;S&m.inf;VI&/m.inf;&/f; behavior as &f;m→1&super;&?show +;+&/super;&/f;......Page 443 &f;S&m.inf;VI&/m.inf;&/f; behavior as &f;m→∞&/f;......Page 444 Numerical examples......Page 445 References......Page 448 Introduction......Page 449 ‘Panagiotopoulos’ inequality formulation of interface problems with nonmonotone contact and friction laws......Page 450 Algorithmic approximation......Page 451 Constrained optimization with neural networks......Page 453 Numerical application......Page 454 References......Page 457 Introduction......Page 459 Literature review......Page 460 Fuzzy optimization......Page 461 Fuzzy linear programming with fuzzy parameters......Page 462 Formulation of the problem......Page 463 Discussions......Page 464 References......Page 465 Creativity in design......Page 466 Creative idea emerges in a special environment......Page 467 Related works......Page 468 Tree-based genetic algorithm......Page 469 A reading lamp figuration design example......Page 472 Acknowledgements......Page 475 References......Page 476 Introduction......Page 477 The Hellinger-Reissner principle......Page 479 Stability and solvability......Page 480 Constitutive relations......Page 481 Stiffness matrix and vector of nodal forces......Page 482 Numerical illustrations and discussion......Page 483 Solvability tests......Page 484 Sandwich beam......Page 485 Plate subjected to a temperature field......Page 487 Piezoelectrically actuated beam......Page 488 Two-material wedge......Page 491 Concluding remarks......Page 492 References......Page 493 TRIZ-a tool for solving conflict problems......Page 494 Eco-innovative design process......Page 495 Example: ‘dual-layer tread tire’......Page 496 Framework of ‘Eco-Design Tool’......Page 498 Search for eco-design target......Page 499 TRIZ inventive principle exploration......Page 500 TRIZ inventive principle interpretation......Page 501 Practical design case: correction tape device......Page 503 Conclusions......Page 506 References......Page 507 Introduction......Page 508 Mathematical model of the problem of the electrical current dissipation into a soil......Page 509 The problem of transferred earth potentials......Page 510 Analysis of transferred earth potentials......Page 511 Example of transferred potential analysis......Page 512 Acknowledgements......Page 513 References......Page 514 Intelligent Flight Support System (IFSS) Evaluation Questionnaire......Page 515 Architecture......Page 517 Evaluation......Page 522 Acknowledgements......Page 523 A mathematical summary of the analytic hierarchy process......Page 526 References......Page 527 Introduction......Page 528 Related work......Page 529 Version binding......Page 530 Configuration management requirements......Page 532 Proposed configuration management model......Page 533 The configuration object and version sharing......Page 534 Configurations as versions......Page 536 Configuration operations......Page 538 Integrity validation model......Page 539 Configuration versions and CVOs......Page 541 Conclusion......Page 542 References......Page 543 Introduction......Page 545 Traditional penalty function strategy......Page 546 Self-organizing adaptive penalty strategy (SOAPS)......Page 547 The second generation of self-organizing adaptive penalty strategy (SOAPS-II)......Page 548 Illustrative examples......Page 550 Ten variable numerical problem-N1......Page 551 Six variable numerical problem-N2......Page 552 Discrete ten-bar truss problem......Page 553 References......Page 554 Introduction......Page 556 The case for row-wise matrix storage......Page 557 Profile and bandwidth compression using transposed matrices......Page 558 Numerical results for unsymmetric matrices from chemical engineering applications......Page 559 References......Page 561 Hydroinformatic environment......Page 563 Conditioned mesh refinement......Page 565 POM-UMH model......Page 572 Water quality models: PROCESSES, RMA4-UMQ and POM-UMQ......Page 575 GIS model results and data integration......Page 578 References......Page 580 Introduction......Page 581 Homogenization of the shadow mask......Page 582 Analysis procedure......Page 583 Thermal deformation analysis......Page 584 Beam landing shifts calculation......Page 586 References......Page 587 Introduction......Page 588 Intelligent training environment architecture......Page 589 Natural Language Interface......Page 590 Hierarchical process knowledge......Page 593 Interface with the humanoid display engine......Page 594 Virtual environment engine......Page 595 Multimodal interfaces......Page 596 Application: wind tunnel training simulator......Page 597 Virtual wind tunnel model......Page 598 Training......Page 601 Rules-attributes descriptions......Page 603 Hierarchical process information attributes......Page 605 References......Page 606 scienceaef8.pdf......Page 607 Introduction......Page 609 Geometrical description......Page 610 Cartesian and natural strains......Page 611 Natural modes and relations to nodal displacements......Page 612 Power of dissipation for the TRIC element......Page 613 Formulation and outline of the solution strategy......Page 614 Sequential limit analysis......Page 615 Simply supported plate......Page 616 Square tube......Page 617 Conclusions......Page 618 References......Page 619 Introduction......Page 620 Problem statement and governing equations......Page 621 The method of solution......Page 622 Numerical integration procedure......Page 623 Results and discussion......Page 624 Conclusion......Page 630 References......Page 632 Introduction......Page 633 Evaluation of temporal integrals in the SGBEM......Page 634 Analytical evaluation of the spatial integrals......Page 635 Evaluation of Type 2 integrals......Page 636 A special scheme for Gaussian integration......Page 637 Numerical examples......Page 638 A plane strip under a Heaviside type loading......Page 639 References......Page 640 Introduction......Page 642 Finite element models for 3D tire analysis......Page 643 Generation of 3D tire meshes considering tread blocks......Page 644 Body mesh generation and tying of tread and body meshes......Page 645 Numerical experiments......Page 646 Footprint and contact pressure distribution......Page 647 References......Page 650 Introduction......Page 651 Hierarchical domain decomposition method......Page 652 Module-based parallel finite element analysis system......Page 653 Media-independent document and I/O functions (large-scale data handling layer)......Page 654 I/O data for FEM (FEM Layers)......Page 655 for hierarchically domain decomposition method......Page 656 Use of ADVENTURE_IO......Page 657 References......Page 660 Notations and strong formulation......Page 662 Continuous formulation......Page 663 First method: D-PANA algorithm......Page 664 The numerical example: a classical benchmark......Page 665 Remarks on the algorithms behaviour......Page 666 References......Page 667 Alignment methodology......Page 668 Loading conditions......Page 669 Shaft projection and offsetting......Page 670 Shaft deflection......Page 674 Results and discussion......Page 675 Concluding remarks......Page 676 References......Page 681 Introduction......Page 682 Meshing strategies: structured and unstructured......Page 683 Multi-block finite volume scheme......Page 684 Adaptation of geometric pre-processor for implementation of multi-block strategy......Page 686 Why multi-block strategy for microfluidics type applications?......Page 687 Flow and heat transfer in a 3D mixer......Page 688 Conclusions and future work......Page 689 References......Page 690 scienced54c.pdf......Page 691 Determination of the Darcy-Weisbach friction factor......Page 692 Branching pipes problem......Page 694 Solution of the system of nonlinear equations......Page 695 Appendix A......Page 696 Appendix B......Page 697 References......Page 698 Introduction......Page 699 Calculation cycle......Page 700 Relative displacements between contacting blocks......Page 701 Equilibrium equations......Page 702 Sliding of rock blocks along a slope......Page 703 References......Page 704 Introduction......Page 706 Object-oriented programming in C++......Page 707 Numerical solution......Page 708 Windows utilities and functionalities of FER/Mech......Page 709 Case studies......Page 712 References......Page 713 sciencede3a.pdf......Page 714 Introduction......Page 715 Graph based evolutionary algorithms......Page 716 Real-time estimate of the final fitness and error bounds......Page 717 The stove model......Page 718 The modified GBEA algorithm......Page 722 Results......Page 723 References......Page 725 Introduction......Page 726 Mesh modeling......Page 727 Acknowledgements......Page 728 Further Reading......Page 729 Introduction......Page 738 Initial solution on the base grid &f;Ω&m.sup;1&/m.sup;&/f; and patches Ω&super;2&/super;......Page 739 Arrays of fibres......Page 740 Hexagonal array of fibres......Page 742 Local multi-grid versus conventional grids......Page 743 Acknowledgements......Page 745 References......Page 746 Introduction......Page 747 The blending problem......Page 748 Edit distance and reference migration......Page 749 Guide based design......Page 750 Master-slave parallelism......Page 751 Results......Page 752 References......Page 754 Introduction......Page 756 Definitions in the virtual boundary model......Page 758 Comparison of methods......Page 759 Creation and solution of physical buffer model......Page 760 Verification of the model......Page 761 Comparison of deflection results......Page 762 Comparison of stress results......Page 765 Comparison of computation time and space......Page 767 Analysis of objective model......Page 768 Analysis and optimization of objective model......Page 769 References......Page 770 Introduction......Page 771 The theory of two-dimensional HT FEM......Page 772 The modified isoparametric mapping fill method......Page 773 Flow chart of the modified isoparametric mapping fill algorithm for HT FEM......Page 775 Conclusions and discussion......Page 776 References......Page 777 sciencefbe9.pdf......Page 778 Introduction......Page 779 Input interface......Page 780 Server side operations......Page 781 Input interface......Page 782 Output interface......Page 785 Report generator......Page 786 Web-based versus standalone platforms......Page 787 The finite element code......Page 788 References......Page 789 Introduction......Page 790 Modelling of meshing software......Page 791 The modular structure......Page 792 A simple 2D triangular mesh data structure......Page 793 Specifications of mesh generation algorithms......Page 796 Extendability and scalability......Page 800 Conclusions......Page 802 References......Page 804 Introduction......Page 805 Problem description......Page 806 The proposed method......Page 807 Activity planning constraints......Page 808 Discussion......Page 809 An application example......Page 810 Activity planning constraints......Page 811 Optimum project crashing......Page 812 Conclusions......Page 813 References......Page 814