Table of Contents
Analytical approaches to nonlinear problems
Generalization of the Krylov-Bogoliubov Method for Nonlinear Oscillators
L. Cveticanin................................................................................................ 1
On the Hexapod Leg Control with Nonlinear Stick-Slip Vibrations
D. Grzelczyk, B. Stanczyk and J. Awrejcewicz........................................... 2
Analytical Study of the Oblique Impact of a Rod with a Flat Using an Elasto-Plastic Contact Model
O. Cermik, H. Ghaednia and D. Marghitu................................................... 3
An Application of the Optimal Homotopy Asymptotic Method to Generalized Van Der Pol Oscillator
V. Marinca, N. Herişanu, I. Laza and E. Ghita............................................ 4
Free Oscillations of a Nonlinear Oscillator with an Exponential Non-Viscous Damping
R. Ene, V. Marinca and B. Marinca............................................................. 5
On the Open Problem: An Optimal Analytical Solution for Duffing Oscillator
V. Marinca, R. Ene and E. Ghita.................................................................. 6
Environmental and occupational noise
Assessment of Environmental Noise by Harmonica Index – Case Study: The City of Niš
M. Praščevič, D. Mihajlov, D. Cvetkovic and A. Gajicki............................ 7
Calculation of Noise Field in an Urban Area close to a Traffic Overpass-Case Study
J. Tomic, S. Todosijevic, B. Radicevic and Z. Soskic................................. 8
Delimiting and Protecting Quiet Areas in an Urban Environment
N. Herişanu, V. Bacria, C. Fiat and I. Damian............................................. 9
Noise Protection of an Automobile Scrapyard with Car Crushers – a Case Study
B. Radicevic, M. Kolarevic, B. Miso, V. Grkovic and Z. Soskic.............. 10
Sound Insulation of Energy Efficient Facade Construction
A. VUKADINOVIĆ, J. Radosavljević, M. Protić and J. Malenović......... 11
Reducing Noise Polution Generated by the Gas Compresor Compressco Cj 360 in a Residential Area
S.N. Platon and A. Tudor........................................................................... 12
Mobile equipment for hydro-acoustic parameters measurement
M. Arsene, C. Borda, V. Popovici, L. Butu, M. Marinescu and D. Arsene......................................................................................................... 13
Determination of noise level specific to pyrotechnic articles for professional use, in order to evaluate the level of professional risk
G. Vasilescu, A. Kovacs, E. Ghicioi, D. Rus, E. Gheorghiosu, C. Jitea and T. Csaszar................................................................................................... 14
Preliminary Results in the Development of a Database for Noise Maps
A. Moscovici.............................................................................................. 15
Reducing noise pollution generated by a hydropower facility
S. Simion, A. Gaman, A. Calamar and D. Pupazan................................... 16
Structural vibration
Dynamic Stress Dissipated Energy Rating of Materials
P. Bratu....................................................................................................... 17
Dynamic Response of Axially Moving Beams with Small Non-Idealities at Boundary Supports
F. Köstekci.................................................................................................. 18
Effects of Structural Properties on Natural Frequencies of Axially Moving Beams with an Intermediate Support
Ş. Aksoy and F. Köstekci........................................................................... 19
Simplified 7 DoF Model of Car Vertical Vibrations for Small Pitch and Roll Angles
D. Dumitriu, V. Chiroiu and L. Munteanu................................................. 20
Damage-Caused Frequency Shifts in Beams and their Use in Structural Health Assessment
G.R. Gillich, H. Furdui, M. Tufoi, Z.I. Praisach and S. Avram................. 21
On the Use of Higher-Order Frequencies in Crack Identification in Columns Subjected to Important Tip Mass
G.R. Gillich, F. Muntean, C.N. Nitescu, V. Iancu, Z.I. Praisach and Z.I. Korka.......................................................................................................... 22
The Dynamic Response of the Elastomeric Isolators Modeled as Voigt-Kelvin to the Action of the Seismic Motion
M. Ciuncanu............................................................................................... 23
On Dynamic Characteristic of Damaged Elastomeric Vibration Isolators
S. Nastac, C. Debeleac and A. Leopa......................................................... 24
Assessments in Experimental Dynamics of A Pendulum System with Application in Vibration Isolation
A. Potirniche, G. Capatana and C. Simionescu.......................................... 25
Dynamic Analysis of a Base Isolated Building Having Zener Rheological Connections at Seismic Unidirectional Translations
P. Murzea.................................................................................................... 26
Biomechanics
Determining the reaction forces and torques that appeared in the ankle joint during normal walking
L. Rusu, C. Vigaru and D.I. Stoia.............................................................. 27
Experimental and Theoretic Viscoelastic Behavior of Functional Spinal Unit, in Stress Relaxation Test
D.I. Stoia, C. Vigaru and L. Rusu.............................................................. 28
Viscoelastic Behavior Simulation of Cortical Bone Tissues Using Burgers Rheological Model
A. Perescu, O. Suciu and L. Bereteu.......................................................... 29
Mapping the Mechanical Properties of Cancellous Bone from the Femoral Head
K.N. Kun, L. Kun, R. Nagy, K. Menyhardt, D. Silaghi-Perju, C. Neş and A. Bogdan................................................................................................... 30
Effect of Auditory Stimuli on the Human Body Biomechanical Stability during Gait Cycle
D. Cotoros, M.I. Baritz and A. Stanciu...................................................... 31
Influence of Carpal Tunnel Syndrome Induced by Vibratory Actions upon Fingers Mobility
D.L. Cotoros, M.I. Baritz and A. Stanciu................................................... 32
Assessment of the Occupational Effects of Vibrations on the Human Body
D.M. Barbu and D.L. Cotoros.................................................................... 33
Evaluation of the Human Body Equilibrium in a Vibration Environment
D.M. Barbu and M.I. Baritz....................................................................... 34
Vibration problems in industrial processes
The Influence of the Working Regime of Oscillations Produced by an Electrovibrator on the Sorting of Materials
V. Vladut, A. Danciu, I. Grigore, N. Herişanu, D. Ilie, C. Sorica, I. Voicea, S.S. Biris, M.F. Dutu, D. Paunescu and I. Gageanu................................... 35
An Optimal Homotopy Asymptotic Approach to a Damped Dynamical System of a Rotating Electrical Machine
N. Herişanu and V. Marinca....................................................................... 36
Vibration Analysis of Insufficiently Repaired well Pump - a Case Study
D. Jovanovic, M. Jovanović, M. Raos, N. Zivkovic, M. Stanković and M. Protić.......................................................................................................... 37
Characterization of Medicinal Plants Sorting Process by Planar Sieving through Mechanical Oscillations Analysis
A. Pruteanu, M.G. Matache, L. David, C. Persu, M.F. Duţu and V. Vladut......................................................................................................... 38
Dynamical and Geometrical Aspects Regarding the Behaviour of a Railway Vehicle Running on Curved Routes
E. Ghita and G. Ursu.................................................................................. 39
A Methodology to Estimate the Center of Oscillation and the Center of Mass of a Railway Vehicle
E. Ghita....................................................................................................... 40
Assessment of occupational risk of exposure to vibrations based on ‘the document for safety to professional vibration’
G. Vasilescu, E. Ghicioi, A. Kovacs, C. Jitea, D. Rus, E. Gheorghiosu and T. Csaszar................................................................................................... 41
Analysis of the Human Health and Safety Requirements to Vibration Generated Risks
O. Vasile..................................................................................................... 42
Highlighting the Change of the Dynamic Response to Discrete Variation of Soil Stiffness in the Process of Dynamic Compaction with Roller Compactors Based on Linear Rheological Modeling
C. Dobrescu................................................................................................ 43
Vibration Aspects on Local Light Rail Transportation
R. Nagy and K. Menyhardt........................................................................ 44
Experimental approaches to vibration problems
Laser Scanning Vibrometry and Holographic Interferometry Applied to Vibration Study
F. Breabăn, R. Debuchy and D. Defer........................................................ 45
Outlooks on the Management System Based on ISO 17025, Applied in Acoustics and Vibration Laboratories
I. Calota...................................................................................................... 46
Vibroacustical Method for Measuring the Effect of Cavitation Erosion
L. Bereteu, I. Bordeasu, G. Drăgănescu, D. Simoiu, M.L. Micu and C. Salceanu...................................................................................................... 47
Determination of the Eccentricity of a Rotor by Impulse Excitation Technique of Vibration
I. Crâştiu, L. Bereteu and D. Simoiu.......................................................... 48
Determination of Coating Thickness Using Impulse Excitation and Laser Measurements
L. Bereteu, E. Nyaguly, G. Drăgănescu and D. Simoiu............................. 49
Accurate Frequency Evaluation of Vibration Signals by Multi-Windowing Analysis
A.A. Minda, N. Gillich, I.C. Mituletu, J.L. Ntakpe, T. Manescu and I. Negru.......................................................................................................... 50
Experimental Determinations of the Damping Factor for Composite Sandwich Bars Reinforced with Two Carbon Fiber Layers
C.M. Miriţoiu, D. Bolcu, C.O. Burada and M.M. Stanescu....................... 51
The Damping Study for Dammar Composites Reinforced with Natural Fibers
D. Bolcu, M.M. Stanescu, C.M. Miriţoiu and C.O. Burada....................... 52
Design of Modular Vibration Testing Equipment
K. Menyhardt, R. Nagy and R.S. Maruta................................................... 53