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7th European Conference on Noise Control 2008, EURONOISE 2008

作者： Arghir, M. Borza, D. Blaga, F. Vesseleny, T. Solea, G. Runcan, M. Technical University of Cluj-Napoca Faculty of Machines Design Department of Mechanics and Computer Programming B-dul MunciiNr. 103-105 400 641 Cluj-Napoca Romania National Institute of Applied Sciences of Rouen INSA Rouen LMR Ave l'Universite 76800 Rouen France University of Oradea Str. Universitatii nr.1 400 641 Cluj-Napoca Romania

The paper contains our study regarding the reduction of urban noise using the sonic barrier walls as to the EMPARA procedure, which is based on the simplified standard method for measurements and computing of surface traffic noise inside urban agglomeration, as they are given in SRM2 laws (Netherlands standards). The studies are made taking into account all parameters that characterize the noise attenuation. The graphical representations are made considering "n-1" constant parameters, and one parameter varying with time. In this way we obtained the influence of each parameter in the diminution of the urban noise using the noise barrier walls. In addition we realized a measurement for a real barrier wall inside the city of Oradea. Our study also contains a FEM model for the analyzed configuration. The comparison between measurements and computation was fair enough, which means that our theoretical study is acceptable and characterizes the noise pollution and its diminution in the urban agglomeration. The measurement-device was a CENTER 322 Sound Lever Meter.

关键词： Noise pollution

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The Mechanical Stability for the Hand-Arm System

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PAMM 2009年第1期8卷

作者： Aurora Felicia Pop A. Trutą Mariana Arghir Technical University of Cluj–Napoca Department of Mechanics and Computer Programming Romania

The present paper contains a study regarding importance stability in the mechanical systems, mechanical systems are emerging under mechanical vibrations action, it referring especially to the human hand–arm system. Mechanical systems stability is directly influenced of the dumper and the elasticity factors. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Research about transmission of the mechanical vibration done by machine-tools on the group of bones shoulder-neck-head

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PAMM 2009年第1期8卷

作者： Aurica Trutą Aurora Felicia Pop Mariana Arghir Technical University of Cluj–Napoca Department of Mechanics and Computer Programming Romania

Different researches have shown that long–term exposure to whole–body vibration can induce different injuries like back pain, injuries of the different part of the body, disturbing the physical and intellectual activities. The resulted diseases could be occasional or could be for ever. Bearing in mind that vibration is applied on the hand or feet, the health rick can be assessed if the forces transmitted in the shoulder during vibration are known. To estimate the forces a biomechanical model has been developed in which the shoulder, neck and head are represented by rigid bodies. The bodies are connected by visco–elastic joint elements. The applied forces are resulted from experimental measurements. To assess the health risk the forces must be divised in two components, an ascendant one and a descendent one. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Obtaining of noise map of great city of Cluj-Napoca. Step by step.

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PAMM 2010年第1期9卷

作者： Geamilia Solea Mariana Arghir Technical University of Cluj-Napoca Faculty of Machine Design Department of Mechanics and Computer Programming Romania

The traffic of autovehicles in pilot zone of great city of Cluj-Napoca is presented in the work. There are established the noise measuring locations for the fixed station and successive positions of the mobile station in pilot zone. Noise pollution measurements are done on the mentioned locations. The “Sound plan” programme pack is used to fulfill the sound map of the great city of Cluj-Napoca; its graphic representation is compared to the real measurement results. Present paper represents a part of research activity of T.U.C.N. researchers in studying for fulfilling of E.U. tasks of environment protection. This research is made for the application of the EU legislation on the Romanian cities. First we worked in the great city of Cluj-Napoca, but the extensions will be to all the urban agglomerations having greater than 100000 people. (© 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Energetic aspects regarding the VIPAS1 industrial robot working. Second Part: Graphical Interpretation

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PAMM 2004年第1期4卷

作者： Viorel Ispas Mariana Arghir Virgil Ispas Department of Mechanics and Computer Programming Faculty of Building Machines Technical University of Cluj-Napoca Romania Department of Machine Tools and Industrial Robots

The paper studies the motion laws influence over the VIPAS1 industrial robot working. The motion differential equations, that govern the motion robot were established. Using them we can study the direct problem for the robot dynamics. There are the given motion laws for the accelerated and decreasing motion having triangular, trapezoidal and parabolic forms. The graphics of the forces and moments give us the possibility to make some recommandations under energetic aspects, for the optimal solutions about the VIPAS1 industrial robot. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Economically study regarding modernizing of the final working of the car radiators through implementation of an articulated robot in a flexible manufacturing cell

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PAMM 2010年第1期9卷

作者： Mihaela Simion Silviu Mihai Petrişor Technical University of Cluj-Napoca Department of Mechanics and Computer Programming Muncii Avenue no. 103-105 Cluj-Napoca 400 641 Romania

In this paper the authors purpose the conception and modelling of a possible application in a circular flexible manufacturing cell. This flexible cell is composed from five manufacturing points for realizing the final technological itinerary of a type of radiator. This flexible manufacturing cell is served by an industrial articulated robot, which possess in his cinematic chain three degrees of freedom, type RRT. In virtue of real values of the functional parameters which are input data in the analysis of the flexible manufacturing cell, had been dignify the cost of the flexible manufacturing cell, determining the value of the included industrial robot in the system and the value of the entire flexible cell where the robot realize the manipulating process of the radiators. (© 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

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The contributions regarding the conception, designing, modelling and the implementation in a flexible cell of fabrication of a modular serial robot

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PAMM 2010年第1期9卷

作者： Silviu Mihai Petrişor Viorel Ispas Mariana Arghir Tehnical University of Cluj-Napoca Department of Mechanics and Computer Programming Muncii Avenue no. 103-105 Cluj-Napoca 400 641 Romania

The authors of the presented paper are propose to relief the calculus, modelling and construction of the translation module of an industrial robot which possess in his cinematic chain five degrees of freedom, type TTRTR. It is propose a choosing variant of the direct current driving engine of the translation module, knowing the output momentum and calculating the input momentum. This is realized by equalize of an equation which results from dynamic modeling of the robot with a designing equation which keep in view the component elements of the structure of the module. The robot is composed by: module of translation on horizontal to the base of the robot (MTB-Sil), module of translation on vertical (MTV-Sil), module of rotation round the vertical axis from the robot's arm, module of translation from the structure of the robot's arm (MT-Sil) and module of orientation assembled with clamping device. In the paper, also is presented an economic study regarding the implementation of the analyzed robot in a manufactural cell concerning the manufacturing and assembling of some types of car radiators. (© 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)

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New Algorithm for the Identification and Analysis of the Parallel Robots Singularities

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PAMM 2005年第1期5卷

作者： Doina Pisla Department for Mechanics and Computer Programming TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania

The paper presents a new algorithm for the analysis of the kinematic singularities for different parallel structures using a testing stand. The derived expressions are used to superimpose graphical representations of the manipulators singularity and workspace. The analytical description of the singularity loci can be successfully used for the optimisation of the kinematic design. The derived algorithm for singularities analysis has been integrated in an already developed parallel robots simulation system, which provides an easy to read graphical representation of the singularities that enables their isolation within the working space and their avoiding in the path programming activity. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Stability study of the human body-seat system into an autovehicle

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PAMM 2009年第1期8卷

作者： Rodean Simona Rodean Claudiu Paul Solea Geamilia Mariana Arghir Technical University of Cluj–Napoca Department of Mechanics and Computer Programming Romania Technical University of Cluj–Napoca Faculty of Machine Building Romania Technical University of Cluj–Napoca Department of Materials Science Romania

The paper presents the study of the human body, as a mechanical system, seated inside an autovehicle and exposed under the vertical harmonic vibration action during the auto vehicle motion time. The human body may be roughly approximated by a linear lumped parameter at low frequencies and low vibration levels. Therefore, the model has 5 DOFs in translation, where 4 DOFs represents the human body and 1 DOF is for the seat cushion The mechanical model of the human body, in sitting position on the seat cushion of a vehicle seat, consists of four parts: pelvis, upper torso, viscera and head.. The eigenvalues for the human body – seat system and the damping ratio for the system was been calculate. The system stability analysis is given by the existence of a Lyapunov function for the system. The stability of a system can also be characterized by the eigenvalues of the system. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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Vibration using for the longitudinal elasticity modulus determination

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PAMM 2009年第1期8卷

作者： Mariana Arghir Geamilia Solea Dan Borza Technical University of Cluj–Napoca Professor at Department of Mechanics and Computer Programming Romania Technical University of Cluj–Napoca PhD Stud. at Department of Material Science Cluj–Napoca Romania Institut National des Sciences Appliquees Professor Rouen France

Longitudinal elasticity modulus, E, is a material specific feature, which,. in general, is establish on the pieces by longitudinal stress. This procedure is possible to apply to the compact material but not to the sintered power parts (or porous material test pieces). For sintered parts, the establishing of Young's modulus, in this paper, it is proposed by transmition of mechanical vibrations along to the test pieces. The test pieces of compact or porous material were strained at longitudinal vibrations. It was establish the linkage between vibration and density, respective between the density and the value of the longitudinal elasticity modulus. Using the test pieces of compact material we realized the methodology to obtain the longitudinal elasticity modulus regarding the compact material, and in this way can be establish the possibility to measure with a good result the longitudinal elasticity modulus for the pieces of sintered powders or of porous material. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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