Linking Models and Experiments, Volume 2: Proceedings of the 29th IMAC, A Conference on Structural Dynamics, 2011

Linking Models and Experiments, Volume 2. Proceedings of the 29th IMAC, A Conference and Exposition on Structural Dynamics, 2011, the second volume of six from the Conference, brings together 33 contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on Finite Element Techniques, Model Updating, Experimental Dynamics Substructuring, Model Validation, and Uncertainty Quantification.

1 Modal Testing and FE-model Validation of Azimuthing Thruster 1
V. Nieminen, VTT Technical Research Centre of Finland; M. Tervonen,
Seinäjoki University of Applied Sciences
2 POD Based Computation of Joint Interface Modes 19 of Mechatronics GmbH
3 Area Wise Application of Contact Constraints in Reduced Mechanical Systems 29
4 On the Extension of Global Vibration Modes With Ritz-vectors Needed for Local Effects 37
of Applied Sciences; H. Irschik, H. Holl, Johannes Kepler University - Linz; K. Mayrhofer, Siemens VAI Metals Technologies GmbH
5 Direct Decoupling of Substructures Using Primal and Dual Formulation 47
6 Spectral Analysis of Vibrating Plates With General Shape 77
G. Catania, S. Sorrentino, University of Bologna
7 Smoothing Experimental Data in Dynamic Substructuring of Built up Systems 89
A. Culla, Università di Roma La Sapienza; W. D'Ambrogio, Università dell'Aquila;
A. Fregolent, A. Schiavone, Università di Roma La Sapienza
8 Metrics for Diagnosing Negative Mass and Stiffness When Uncoupling Experimental and Analytical Substructures 111
M.S. Allen, D.C. Kammer, University of Wisconsin-Madison; R.L. Mayes,
9 Propagation of Free-interface Substructure Uncertainty into System Test-analysis Correlation 135
D.C. Kammer, S. Nimityongskul, D. Krattiger, University of Wisconsin W. D'Ambrogio, Universita dell'Aquila; A. Fregolent, Universita di Roma La Sapienza W. Witteveen, University of Applied Sciences - Wels; K. Sherif, Linz Centre W. Witteveen, University of Applied Sciences - Wels K. Sherif, Linz Centre of Mechatronics GmbH; W. Witteveen, University Sandia National Laboratory viii
10 Feature Extraction for Structural Dynamics Model Validation 153
University of Sheffield; G. Park, Los Alamos National Laboratory; N. Takeda,
11 Hybrid Sets of Merged Data for Modal Model Applications 165
L. Thibault, B. LeBlanc, P. Avitabile, University of Massachusetts Lowell
12 Dynamic Uncoupling of a System Model for Component Identification 173
D. Cloutier, P. Avitabile, University of Massachusetts Lowell
13 Full Field Dynamic Stress/Strain From Limited Sets of Measured Data 187
P. Pingle, P. Avitabile, University of Massachusetts Lowell
14 Limited Experimental Displacement Data Used for obtaining Full-field Dynamic
Stress Strain Information 201
P. Pingle, P. Avitabile, University of Massachusetts Lowell
15 A Survey of Techniques to Estimate the Uncertainty in Material Parameters 219
T. Simmermacher, Sandia National Laboratories
16 Construction of DEM-base Traffic Model Using Optimal Velocity Model 231
T. Koizumi, N. Tsujiuchi, R. Akatsuka, Doshisha University
17 Confidence Intervals of Modal Parameters During Progressive Damage Test 237
L. Mevel, INRIA; W. Rücker, BAM Federal Institute for Material Research and Testing
18 Identification of Material Properties of Composite Plates Utilizing Model Updating
and Response Surface Techniques 251
K. Gurses, B. Kuran, C. Gencoglu, Roketsan A.S.
19 Globally Enriched Substructuring Techniques for Vibro-acoustic Simulation 263
U. Tabak, D.J. Rixen, Delft University of Technology
20 A Modal-geometrical Selection Criterion for Master Nodes: Numerical and Experimental
Testing 281
E. Bonisoli, C. Delprete, C. Rosso, Politecnico di Torino
21 Robust Optimization and Quality Control in Spot Welded Structures 297
Q.I. Bhatti, M. Ouisse, S. Cogan, Université de Franche-Comté
22 Interface Reduction in the Dual Craig-Bampton Method Based on Dual Interface Modes 311
D.J. Rixen, Delft University of Technology
23 A Truly Hybrid Approach to Substructuring Problems Using Mixed Assembly
and Implicit Solving Strategies 329
S.N. Voormeeren, P.L.C. van der Valk, D.J. Rixen, Delft University of Technology
M. Nishio, University of Tokyo; F. Hemez, Los Alamos National Laboratory; K. Worden,
University of Tokyo; C. Farrar, Los Alamos National Laboratory M. Döhler, INRIA; F. Hille, BAM Federal Institute for Material Research and Testing; X.-B. Lam, ix
24 Model Updating Methodologies for Multibody Simulation Models: Application to a Full-scale Wind Turbine Model 349
S. Manzato, B. Peeters, A. Toso, H. Van der Auweraer, LMS International; R. Osgood,
National Renewable Energy Laboratory
25 DOF Reduction Strategy for Large Order Finite Element Models 359
R.N. Coppolino, Measurement Analysis Corporation
26 Understanding Large Order Finite Element Model Dynamic Characteristics 367
R.N. Coppolino, Measurement Analysis Corporation
27 FEM Sensitivity Method for Uncertainty and Reconciliation Analyses 375
R.N. Coppolino, Measurement Analysis Corporation
28 Uncoupling Techniques for the Dynamic Characterization of Sub-structures 383
F.C. Batista, Polytechnic Institute of Leiria; N.M.M. Maia, University of Lisbon
29 Receptance Based Normalization of Operational Mode Shapes 393
D. Bernal, Northeastern University
30 Fault Simulation in a Gearbox Using Finite Element Model Reduction Techniques 399
L. Deshpande, N. Sawalhi, R.B. Randall, University of New South Wales
31 Response Measurements of DMS Cabinets and Supporting Truss Structures Under
Environmental and Transient Wind Loads 411
32 Variance Decomposition in the Presence of Epistemic and Aleatory Uncertainty 417
33 A Forecasting Metric for Predictive Modeling 431
S. Atamturktur, Clemson University; F. Hemez, C. Unal, Los Alamos National Laboratory

Civil Engineering Topics, Volume 4 , Civil Engineering Topics, Volume 4 Proceedings of the 29th IMAC, A Conference on Structural Dynamics, 2011

1 Multi-dimensional Calibration of Impact Dynamic Models 1
L.G. Horta, M.C. Reaves, M.S. Annett, K.E. Jackson, NASA Langley Research Center
2 Dynamic Analysis of Railway Bridges by Means of the Spectral Method 21
G. Catania, S. Sorrentino, University of Bologna
3 Advanced Operational Modal Analysis Methods for Linear Time Periodic System Identification 31, M.S. Allen, University of Wisconsin-Madison; S. Chauhan, Brüel & Kjær Sound & Vibration Measurement A/S; M.H. Hansen, Risø National Laboratory
4 Normalization of Complex Modes from Mass Perturbations 45
D.-W. Seo, F. Moghim, D. Bernal, Northeastern University
5 Numerical Continuation of Periodic Orbits for Harmonically Forced Nonlinear Systems 51
M.W. Sracic, M.S. Allen, University of Wisconsin-Madison
6 Identification of the Tensile Force in Tie-rods of Historical Constructions 71
H.T.M. Luong, L.F. Ramos, R. Aguilar, University of Minho
7 Data Fusion for System Identification of the Humber Bridge 83
M. Döhler, INRIA; B. Jaishi, The University of Sheffield; L. Mevel, INRIA; J.M.W. Brownjohn,
The University of Sheffield
8 Human-induced Vibration Propagation on a Composite Floor System 99
O.F. Tigli, McNamara/Salvia Inc. Consulting Engineers
9 Mitigation of Low-velocity, Wind-induced Vibration of an Architectural Spire 109
O.F. Tigli, McNamara/Salvia Inc. Consulting Engineers; L. Caracoglia, Northeastern University
10 Closed-loop System Identification of Alstom 3MW Wind Turbine 121
11 Reduced Order Modal-space Wireless Control of Civil Engineering Structures 129
R.A. Swartz, Michigan Technological University ALSTOM Wind, C.E. Carcangiu, I.F. Balaguer, ALSTOM Wind; S. Kanev, ECN Wind Energy; M. Rossetti,
12 Wind Turbine Structural Damping Control for Tower Load Reduction 141
A. Rodríguez T., C.E. Carcangiu, I. Pineda, Alstom Wind; T. Fischer, B. Kuhnle, M. Scheu, Universität Stuttgart; M. Martin, Alstom Wind
13 Identification of Dynamic Properties of Open-deck Viaducts Under Passing
Train Loads 155
K. Matusoka, K. Kaito, Osaka University; T. Watanabe, M. Sogabe, Railway Technical Research Institute
14 Risk Assessment of Dolphin Protected Bridge Pier Considering Collision Point Analysis 163
H.-J. Kim, J. Lim, W. Park, H.-M. Koh, Seoul National University
15 OMAX Testing of a Steel Bowstring Footbridge 173
E. Reynders, D. Degrauwe, M. Schevenels, G. De Roeck, Katholieke Universiteit Leuven; 16 Bridge Pier Scour Measurement by Means of Bragg Grating Arrays: Laboratory Tests and Field Applications 183, F. Ballio, A. Cigada, G. Crotti, F. Inzoli, S. Manzoni, Politecnico di Milano
17 Numerical Investigation on the Measurement Uncertainty in Operational Modal Analysis
of a Civil Structure 191
A. Cattaneo, S. Manzoni, M. Vanali, Politecnico di Milano
18 Measurement and Application of Bouncing and Jumping Loads Using Motion Tracking Technology 201
V. Racic, J.M.W. Brownjohn, A. Pavic, The University of Sheffield
19 Operational Modal Analysis for Guangzhou New TV Tower 211
Y. Niu, P. Kraemer, C.-P. Fritzen, University of Siegen
20 On the use of Shape Memory Alloys Dampers to Reduce the Vibration Amplitudes of Civil
Engineering Cables 221
21 Dynamic Behavior of ‘Palazzo Lombardia’ Helisurface, Comparison Between Operational
and Experimental Modal Analysis 235
22 Human-structure Interaction: Effects of Crowd Characteristics 247
K.A. Salyards, R.J. Firman, III, Bucknell University
23 Delamination Detection in Concrete Plates Using Output-only Vibration Measurements 255
S. Xing, M.W. Halling, P.J. Barr, Utah State University
24 Semi-active Control of Staircase Vibration Under Human Excitation 263
R. Philp, P. Reynolds, D.S. Nyawako, The University of Sheffield viii, L. Dieng, LCPC; V. Torra, CIRG-DFA-ETSECCPB; P. Pilvin, Université de Bretagne G. Busca, A. Cigada, Politecnico di Milano; E. Mola, ECSD S.r.l.; F. Mola, M. Vanali, Politecnico di Milano P. Van den Broeck, KaHo Sint-Lieven; K. Deckers, P. Guillaume, Vrije Universiteit Brussel
25 A System Identification Based Approach for Estimating Modal Frequencies of Bridges
Under Environmental Influence 273
Foundation Arlington
26 Feature Assimilation in Structural Health Monitoring Applications 285
Saurabhu Prabhu, Jordan Supler, Sez Atamturktur, Clemson University
27 Decentralized Modal Analysis and System Identification Using Embedded Markov
Parameter Extraction Within Distributed Wireless Sensor Networks 297
J. Kim, J.P. Lynch, University of Michigan
28 Comparison Study of Output-only Subspace and Frequency-domain Methods for System
Identification of Base Excited Civil Engineering Structures 305, J. Kim, J.P. Lynch, University of Michigan
29 Footbridge Response Predictions and Their Sensitivity to Stochastic Load Assumptions 313
L. Pedersen, C. Frier, Aalborg University 30 321 R.P. Carreño, R.L. Boroschek, University of Chile
31 Operational Modal Analysis of a Historic Tower in Bari 335
P. Andersen, Structural Vibration Solutions A/S
32 Monitoring of a Movable Bridge Mechanical Components for Damage Identification
Using Artificial Neural Networks 343
T. Dumlupinar, F.N. Catbas, University of Central Florida
33 Ambient Vibration Based Modal Identification of a Flexible Retaining Wall 349
C. Rainieri, A. Dey, C. Laorenza, G. Fabbrocino, F. Santucci de Magistris, University of Molise
34 Structural Health Monitoring of a Bridge Model Using ARX Models 357
35 Structural Health Monitoring and Evaluating Structural Performance of a Stadium 365
H.O. Sazak, F.N. Catbas, M. Gul, University of Central Florida 36 373 R. Brincker, Aarhus University; A. Brandt, University of Southern Denmark; C.T. Georgakis, J.H. Roldsgaard, Technical University of Denmark; D. Schilz, INCA Ingenieurs Conseils Associes
37 Use of Wireless Smart Sensors for Detecting Human Falls Through Structural Vibrations 383
B.T. Davis, J.M. Caicedo, S. Langevin, V. Hirth, University of South Carolina
38 Structural Health Indices for Steel Truss Bridges 391
Estimation of Damping for one of the New European Court Towers in Luxembourg
ix H. Nandan, Virginia Polytechnic Institute and State University; M.P. Singh, National Science Modal Parameter Variations due to Earthquakes of Different Intensities
M. Diaferio, D. Foti, M. Mongelli, University of Bari; N.I. Giannoccaro, University of Salento; T. Terrell, M. Gul, F.N. Catbas, University of Central Florida R.K. Giles, R. Kim, B.F. Spencer, Jr., L.A. Bergman, University of Illinois at Urbana-Champaign, C.K. Shield, University of Minnesota; S.C. Sweeney, U.S. Army ERDC-CERL

Advanced Reinforced Concrete Design

Econmic Concrete Frame Elements

This publication was commissioned by the Reinforced Concrete Council, which was set up to promote better knowledge and understanding of reinforced concrete design and building technology. The Council’s members are Co-Steel Sheerness plc and Allied Steel & Wire, representing the major suppliers of reinforcing steel in the UK, and the British Cement Association, representing the major manufacturers of Portland cement in the UK. Charles Goodchild is Senior Engineer for the Reinforced Concrete Council. He was responsible for the concept and management of this publication.

The ideas and illustrations come from many sources. The help and guidance received from many individuals are gratefully acknowledged on the inside back cover.

The charts and data in this publication were prepared to BS 8110, Pt 1: 1985, up to and including Amendment No 4. During production, BS 8110 Structural use of concrete: Part 1:1997 Code of practice for design and construction was issued. This incorporated all published amendments to the 1985 version plus Draft Amendments Nos. 5 and 6. In general, the nett effect of the changes is that slightly less reinforcement is required: preliminary studies suggest 2 to 3% less in in-situ slabs and beams and as much as 10% less in columns. Readers should be aware that some of the tables in the new Code have been renumbered. The charts and data given in this publication remain perfectly valid for pre-scheme design.

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