ROMANIAN ACADEMY ACADEMY OF TECHNICAL SCIENCES Department of Technical Sciences

COMMISSION OF ACOUSTICS OF ROMANIAN ACADEMY

THE ANNUAL SYMPOSIUM OF THE INSTITUTE OF SOLID MECHANICS SISOM 2008 and

SESSION OF THE COMMISSION OF ACOUSTICS

Bucharest, May 29-30, 2008 Home Page Sisom 2000

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Session 2

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Organizing CommitteeSession 4

ORGANIZING COMMITTEE Co-Chairman Acad. Radu Voinea, Romanian Academy Prof. Radu Munteanu, Rector Univ. Tech. Cluj Prof. Tudor Sireteanu, Institute of Solid Mechanics Vice-chairman Prof. Veturia Chiroiu, Institute of Solid Mechanics Prof. Ioan Magheti, Politechnica Univ., Bucharest Members Prof. Charles W. Stammers, Univ. of Bath, UK Prof. Pier Paolo Delsanto, Politecnico. di Torino, Italy Prof.hab. Vasile Marina, Tech. Univ. of Moldova Prof.hab. Boris Rybakin, Rep. Moldova Academy Prof. Delia Dimitriu, Univ. of Manchester Prof. Petre P. Teodorescu, Univ. of Bucharest Prof. Dan Iordache, Politechnica Univ., Bucharest Prof. Polidor Bratu, ICECON, Bucharest Prof. Napoleon Antonescu, Univ. from Ploieşti Prof. Dumitru Stanomir, Politechnica Univ., Bucharest Prof. Mircea Rades, Politechnica Univ., Bucharest Prof. Gheorghe Amza, Politechnica Univ., Bucharest Conf. Mariana Stan, Spiru Haret University Prof. Marius Smigelschi, Inst. of Architecture, Buch. Dr. ing. Ionel Iorga, INCDPM Dr. ing. Dinu Bratosin, Institute of Solid Mechanics Dr. ing. Lucian Căpitanu, Institute of Solid Mechanics Dr. ing. Luige Vlădăreanu, Institute of Solid Mech. Dr. Marcel Migdalovici, Institute of Solid Mechanics Dr. ing. Wladimir Racoviţă, Institute of Solid Mech.

Org Secretary :aCommittee dr. Marcel MIGDALOVICI dr. eng. Cristian RUGINA dr. Margarit BAUBEC eng. Gabriela VLADEANU as. Veronica IOVANESCU Special thanks to the sponsors: - AGIR - General Association of Romanian Engineers - VTC – SRL (Engineering and Industrial Technologies, Engineering & Dealer – ABB)

Session 1 – System dynamics and continuum mechanics (1D) Gheorghe MORARU About one approach to the solution of problems for plane bodies with defects. (2D) Corina S. DRAPACA A New Multi-scale Model for Magnetic Resonance Elastography. (3D) DINU BRATOSIN Applicability constraints of seismic base isolation technology. (4D) Dinel POPA, Aron IAROVICI, Veturia CHIROIU, Ligia MUNTEANU On the dynamics of a nonlinear cantilever beam. (5D) Polidor BRATU Evaluation of vibrating compaction process for fresh concrete. (6D) Nicolae CONSTANTIN, Ştefan SOROHAN, Mircea SOARE, Viorel ANGHEL, Mircea GĂVAN

Evaluation of the structural effects occurred in a port chamber due to damages produced in the refractory lining.

(7D) Tudor SIRETEANU, Marius GIUCLEA, Viorel SERBAN, Ana Maria MITU On the fitting of experimental histeretic loops by Bouc – Wen model.

(8D) Daniel BALDOVIN, Dan DUMITRIU, Tudor SIRETEANU Comparative study of two simulation methods for estimating wheel/rail dynamic contact forces.

(9D) Valeria MOSNEGUTU, Lucian CAPITANU, Veturia CHIROIU, Mihai POPESCU A 3D model for motion of knee joint during flexion and extension. (10D) Adrian BRUJA, Marian DIMA, Catalin FRANCU Fatigue test stand for fiber glass assay-samples. (11D) Viorel ANGHEL, Mircea GAVAN, Nicolae CONSTANTIN, Stefan SOROHAN Applications of Lockin Thermography in NDE of Composite Materials. (12D) Carmen E. EISINGER-BORCIA, Emil M. VIDEA, Diana M. BADEA On the modeling of the dynamic behavior of automatic milling systems. (13D) Radu D. RUGESCU Gimbals for vector control of nerva liquid motor transporters. (14D) Horia DUMITRESCU, Florin FRUNZULICǍ Aeroacoustic modelling of low-speed flows.

(15D) Florin FRUNZULICǍ, Horia DUMITRESCU Aeroelastic computation using the BEDDOES – LEISHMAN dynamic stall model.

(16D) Gheorghe OPROESCU, Silviu NASTAC The modeling of the dissipative solidly media for the waves

(17D) Silviu NASTAC, Gheorghe OPROESCU About damages identification methods at MDOF dynamic systems.

(18D) Silviu NASTAC About vibration isolation performances and fuzzy logic techniques . (19D) Adrian-Ioan NICULESCU On Self Adjustable Shock Absorbers “VZN” Pitch Behavior, Relative to the Standard Ones.

(20D) Dana CIOROIANU,Vasile LEAHU, Constantin ISPAS, Vlad Grigore LASCU Automobile technical problems studies and optimization solution obtained by TRIZ theory. (21D) Adrian LEOPA Vibration control for industrial sustainable development.

(22D) Veturia CHIROIU, Ligia MUNTEANU, Ana Maria MITU, Carmen EISINGER On the eigenvalues optimization of beams with auxetic patches. (23D) Marcel MIGDALOVICI, Emil M. VIDEA, Daniela BARAN On the control of vibration of overhead line conductors. (24D) Margarit BAUBEC The uniqueness of the solution in a dynamic micropolar theory of plates. (25D) LIVIU MARIN The minimal error method for an inverse boundary value problem in linear elasticity

Session 1 Home Page Sisom & Acoustics 2008

Organizing Committee

Session 2

Session 3

Session 4

Session 2 – Robotics, mechatronics, biomechanics, wear investigations of materials (1R) Ionel STAREŢU, Georgiana RIZEA

Synthesis, analysis, design and functional simulation for the mechanism of the prosthesis for upper human limb

(2R) Ivan ILIUC

Improvement of mixed lubrification regime for friction and CO2 emission reduction in internal combustion engine.

(3R) Mircea FENCHEA Mechanical transmission analyze thru the statistical method. (4R) Boris-Sergiu CONONOVICI, Gheorghe NIŢU Mobile Robot Able to Navigate in an Unstructured Environment. (5R) Luige VLADAREANU, Lucian M. VELEA, Zachei PODEA, Alexandru GAL, Octavian MELINTE Real Time Control of the Modular Structures through Distributed and Decentralized Systems. (6R) Lucian Marius VELEA, Luige VLADAREANU, Zachei PODEA, Alida Lia Mariana VELEA,

Alexandru GAL, Octavian MELINTE Modular automaton system with real time control for creating command installations and electrical

operations dedicated to combined forages production installations.

(7R) Dan A. IORDACHE, Viorica IORDACHE Study of the power laws specific to some elastic materials and devices.

(8R) Ivan ILIUC, Lucian CAPITANU, Margarit BAUBEC, C-tin TIGANESTEANU About some aspects of solid 3D models manufacturing of human bone structures.

(9R) Dan DOBROVOLSCHI The Volterra gyrostat: A journey from the classical Euler gyroscope to contemporary geophysical low-order models.

(10R) Marian BOLBOE, Petre ALEXANDRU 3D - CAD model of a gripping system with three fingers - Structural analysis. (11R) Alexandru VLADEANU, Gabriela VLADEANU Contributions at the machines study for the skid-proof materials spreading. (12R) Mihai MĂRGĂRITESCU, Roxana RICU Robots with mixed parallel - serial kinematics – LABVIEW modeling and control.

(13R) Ion NAE, Marius Gabriel PETRESCU Aspects concerning the calculus of the cutting regime parameters to the mechanical working.

(14R) Violeta Aurora ARAMA PANTURU, Amedeu ORANESCU The Parallelism Between The Energetic Mathematic Models In The Mobile Structure Mechanics.

(15R) Alexandru NǍSTASE The Use of Hermite’s Polynomials to Define Robotic Movements. (16R) Alexandru NǍSTASE On Dynamics of Redundant Manipulators

(17R) Liviu POPA, Diana-Flavia POPA The study of the influence of self-maintained vibrations on the quality of the lathing processed cylindrical pieces.

(18R) Amalia TIRDEA, Cristina BASARABĂ-OPRIŢESCU Impulsive forces effects in the cutting process of the mechanic press with crack and connecting-rod assembly.

(19R) Polidor BRATU, Cristina BASARABĂ-OPRIŢESCU, Mihai Ilie TOADER, Amalia TIRDEA The simulation of the contact/impact between two rigid bodies using the ANSYS cod.

(20R) Ion NIŢU, Cornel SECARĂ, Wladimir RACOVIŢĂ Experimental Validation of Control Strategies for a Planar Redundant Robot.

(21R) Gabriel Arin MIHALCEA Tribological structures for friction surfaces.

(22R) Gabriel Arin MIHALCEA Tribological problems in boundary lubrication.

(23R) Lavinia Ioana SǍBǍILǍ Automatization and robotization necesity of the oxygen factory. (24R) Margarit BAUBEC Approximation of isosurfaces with applications in medicine. (25R) Eugen DIACONESCU Material Surface Characterization Using Fractal Dimension

Session 1 Home Page Sisom & Acoustics 2008

Organizing Committee

Session 2

Session 3

Session 4

Session 3 – Technical Acoustics

(1A) Dan Alexandru IORDACHE, Viorica IORDACHE

Study of the effects of numerical phenomena on the stability and convergence radii of the computer simulations of acoustic pulses propagation.

(2A) Tiberiu VESSELENYI, Mircea - Bogdan TĂTARU, Florin – Sandu BLAGA, Ioan MOGA Evaluation models for noise reduction. (3A) Cobis Rabah DERBAL, Hamza ZEGHLACHE, Samira DEBACHE Multidisciplinary approach of the problem of noise nuisance in urban environment. (4A) Cobis Rabah DERBAL, Hamza ZEGHLACHE, Samira DEBACHE Noise dimension in the design of urban spacessonic instrumentation of public places. (5A) Nihan Gurel

Evaluation of the Acoustical Performance of Elementary Schools: An Example of An Elementary School in Istanbul.

(6A) Nicolae TRUŢA , Luminita ANGHEL Thermoacoustics: a boundary science, with large technological potential

(7A) Vasile BACRIA, Nicolae HERIŞANU The efficiency of the noise reduction methods implementation in urban environment (8A) Cristian NEGRESCU, Amelia CIOBANU, Dumitru STANOMIR Refined Spectral Estimation of Tonal Components. (9A) Inge GAVAT, Ovidiu GRIGORE, Corneliu Octavian DUMITRU, Marius COTESCU Recent progresses in speech processing for Romanian language.

(10A) Vasile IGNAT, Florentina IGNAT Estimation system for sonar efficiency in underwater target detection. (11A) Nicolae TRUTA, Luminita ANGHEL Noise reduction in heating ventilation and air conditioning systems (12A) Amalia TÎRDEA, Cristina Basarabă-OPRIŢESCU

Impulsive forces effects in the cutting process of the mechanic press with crack and connecting-rod assembly.

(13A) Mihaela PICU, Ana PICU View upon the sound field diffusion in closed spaces (14A) Ion STROE Weight functions method in stability study of vibrations

(15A) Daniel Marius MIHAI Acoustic comfort regarding railway vehicles and tracks. Solutions for improving (16A) Mircea COPOT, Ioan LUNG Nontemporal Components of the sounds (17A) Victor CROITORU, Tiberiu VOICA, Mihnea MAGHETI Mechanical vibrations surveillance techiques applied to remote turbogenerators surveillance (18A) Aurelia MIHALCEA

Evaluation of polyharmonic vibrations effects upon human body aiming to improve the norms regarding limits and exposure time

(19A) Ioan MAGHETI, Luminita HOSSU, Gabriel OPREA SEA Method at Sound Transmission through panels (20A) Doru TURCAN Analysis of accidental fault (21A) Mihai ZAPLAIC, Sorina ILIUTA The specifics of acoustic phenomena resulted from surface mining exploitation. (22A) Mihaiela Cretu, Adina Ionescu, Silviu Ionescu, Luminita Hossu Sound absorbent structures with improve properties in order to reduce urban and industrial noise

(23A) Constantin Daniel COMEAGĂ, Bogdan LAZAROVICI, George TACHE

Noise mapping for Bucharest city. (24A) Nicoleta BRISAN, Mihai ZAPLAIC Influences of geological particularities on the vibration levels generated through derocking explosions. (25A) Florin Sandu BLAGA, Ioan TARCA, Tiberiu VESSELENYI, Vochita HULE, Mircea Bogdan TATARU Ways of the urban traffic intensity impact on human factor determination. (26A) Mihai ARSENE Analysis and Monitoring systems for urban transient noise. (27A) Nicolae ENESCU, Ovidiu VASILE Experimental noise damper. (28A) Luminita VOICULESCU, Craita CIOCARDIA-CARP Lagrange’s equations for the acoustic system. (29A) Mariana SAVU Analysis regarding cluyches vibrations made by syick-slip phenomenon (30A) Alina BOGOI, Jeni POPESCU, Valeriu VILAG A ID estimation of the sound pressure level in the vicinity of a helicopter using the finite volume method (31A) Adina IONESCU, Mihaiela CRETU, Silviu IONESCU, Luminita HOSSU Noise sources of a turboengine and the environmental impact

(32A) Mircea COPOT, Ioan LUNG Non-temporal components of some sounds (33A) Iulia BUSUIOCEANU The vibrations of the band-arm system (34A) Nicolae ORASANU Some considerations about the study of angular axial vibrations of a centrifugal separator (35A) Silviu Platon Vibrations. Risk factors for safety and health (36A) Luminita VOICULESCU, Lucian IONESCU Theoretical considerations regarding studying the series type of acoustic filters (37A) Luminita MORARU, Gabriela IONESCU Occupational Deafness prophylaxis

Home Page Sisom & Acoustics 2008Session 1

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Session 4

Session 4 – Ultraacoustics

(1U) Gheorghe AMZA, Dan Florin NITOI One degree of freedom ultrasonic motor. (2U) Nicuşor Alin SÎRBU, Tudor ICLĂNZAN, Octavian OANCĂ

Conception, design and realization of the ultrasonic assembly for flow activation devices of the polymeric media.

(3U) Mihaela CALUDESCU, Mihai Valentin PREDOI, Cristian Catalin PETRE, Marian SOARE An experimental method for homogeneous isotropic materials caracterization. (4U) Gheorghe AMZA, Zoia APOSTOLESCU

Experimental research regarding the influence of the acoustic parameters over the quality in ultrasonic welding of composite materials.

(5U) Dan DOBROTĂ, Gheorghe AMZA

Researches concerning the ultrasonic energy’s influence over the resistance at extraction of the metallic insertion from the rubber matrix.

(6U) Gheorghe AMZA, Gabriel Dan TASCA, Mihai BALACEANU Research regarding the possibilities of ultrasonic control of intelligent composite materials.

(7U) Grigore Liviu ODOBESCU The optimization of electric parameters for rises the power transfer in case of uses piezoelectric transducers excited by electronic generators.

(8U) Doru PĂUŞAN, Victor POPOVICI Monitoring the static force and the amplitude of vibration of the sonotrode of an ultrasound welding stand. (9U) Cornelia LUCHIAN, Gheorghe AMZA, Victor POPOVICI, Florea DUMITRACHE

Researches regarding the modeling using the finite method analisys of an ultraacoustic system used at the ultrasound welding of composed materials

(10U) Luminita MORARU Control of solidified structure in eutectic aluminium-silicon alloy by high power ultrasonic field (11U) Gheorghe AMZA, Doru PĂUŞAN, Victor POPOVICI Analysis of the ultrasonic welding-staking process by infrared thermography (12U) Claudia BORDA, Delicia ARSENE, Marinela MARINESCU, Angela MORARU, Larisa BUTU, George ARSENE Study of the present state of ultrasonic linear motors. (13U) Gheorghe AMZA, Oana CHIVU, Dan Florin NITOI Contribution concerning the modeling of an ultrasonic engine with three degrees of freedom. (14U) Larisa BUTU, Marinela MARINESCU, Angela MORARU, Claudia BORDA, Delicia ARSENE Experimental contributions regarding real-time aquisition temperature for ultrasonic cleaning

(15U) Constantin RADU, Nicolae IONESCU, Doina RADU Theoretical and experimental research regarding the determination of corrosion resistance of surfaces processed in ultrasonic field

(16U) Gheorghe. AMZA, Mihai Alexandru BALACEANU, Gabriel Dan TASCA Research regarding the ultrasonic welding of composite materials (17U) Adina NEGREA, Mihai PREDOI Some critical considerations on recent researches concerning the rayleigh wave velocity (18U) Cristian RUGINA Absorbing boundary conditions in simulations of elastic waves propagation  

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Session 4

(19U) Gheorghe AMZA, Constantin PETRICEANU Mathematical modelling of the ultrasonic non-destructive control for the composite materials