Tiberiu Ștefan MĂNESCU


32-65 TESTE EXPERIMENTALE PE DISCUL BIPLAN AL VANEI FLUTURE

EXPERIMENTAL TESTS ON A BUtTERFLY

VALVE BIPLAN DISC

 

The paper present the obtained experimental results after laboratory tests on a butterfly valve biplane disc by using electrical resistive tensometry method. Measuring the variation of the sensor’s resistance through electrical methods is proportionally with its elongation and the deformation of the part of the butterfly valve disc. The measured elongations for three static loads applied on the valve disc are presented.

 

Keywords: deformations, biplane butterfly valve disc, tensometers electro-resistive

Cuvinte cheie: deformaţii, disc biplan vană fluture, tensometrie electro-rezisitivă

Descarcare text


32-61 ANALIZA STĂRII DE TENSIUNI ŞI DEFORMAŢII ÎN CORPURILE DE RULARE DE MICI DIMENSIUNI

STRESS AND STRAIN ANALYZE OF

SMALL ROTATION BODIES OF BEARINGS

 

In the paper is presented the study of tensions and strains ho appears in small radial roller bearings during the compressive strength testing caused by forces acting perpendicular to the roller generator. For modelling a roller bearing Ø 16×24 [mm] we used SolidWorks program, the tests were conducted on two types of rollers with and without defect loaded in five-speeds charging.

 

Keywords: reel, bearing, local deformation, finite element

Cuvinte cheie: rolă, rulment, deformaţie locală, elemente finite

Descarcare text


30-53 EXAMINAREA EXPERIMENTALĂ A COMPORTĂRII CAROSERIILOR AUTOVEHICULELOR DE TRANSPORT DE PERSOANE

EXPERIMENTAL EXAMINATION OF THE BEHAVIOR
OF PASSENGER VEHICLE BODIES
It can be affirmed that the movement has emerged with the advent of
motor transport. If the early use of these means of transport, traffic accidents is
produced with low frequency, at the present time, due to the unprecedented
increase in traffic, traffic accident has become an acute social problem. As a
result, over time, it has acted in the following three major directions: the traffic
Regulation by a legal system, increase the level of performance of active safety
provided by the motor vehicle, increasing the level of passive safety
performance ensured by the motor vehicle.
Keywords: experimental examination, bodywork, vehicle
Cuvinte cheie: examinarea experimentala, caroserie,
autovehicul

Descărcare text


29-90 ANALIZA TENSIUNILOR ȘI DEFORMAȚIILOR LA ȘASIUL UNUI VAGON DE MARFĂ CU PEREȚI ÎNALȚI ÎN URMA UNOR LUCRĂRI DE REPARAȚIE ȘI CONSOLIDARE

ANALYSIS OF TENSIONS AND DEFORMATIONS TO THE
CHASSIS OF A FREIGHT WAGON WITH HIGH WALLS
AFTER CONSOLIDATION AND REPAIR WORKS
This paper checks by the finite element method the solution to
strengthen the chassis of a boxcar with high walls in the process of corrective
and predictive maintenance railway vehicles run scheduled ungass works
inspections and repairs in order to keep running optimally or improved and
increase transport capacity correlated with the life extension of the rail vehicle
Keywords: freight wagon loads, stresses, strains, maintenance
Cuvinte cheie: vagoane de marfă, sarcini, tensiuni, deformaţii,
mentenanţă

Descărcare text


29-73 SUPRAFEŢE NEUTRE PENTRU DISCULUI BIPLAN AL VANEI FLUTURE

NEUTRAL SURFACES FOR BUTTERFLY VALVE BIPLAN DISK
Due to the eccentricities of the biplane disc of the butterfly valve, the
analysis of the directional stresses can be done by using the numerical
methods. The paper presents the neutral surfaces of butterfly valve biplane disc
obtained by numerical methods. The neutral surfaces are defined as surfaces
with directional stress of zero value or, those surfaces which delimit the passing
of the directional stresses from negative values to positive values.
Keywords: neutral surfaces, butterfly valve disc, tensions
Cuvinte cheie: suprafeţe neutre, disc vană fluture, tensiuni

Descărcare text


29-51 INFLUENŢA FACTORILOR EXTERNI ASUPRA PEREŢILOR BATARDOURILOR METALICE DESTINATE PROTEJĂRII RÂURILOR ÎN CAZ DE DEZASTRE NATURALE

THE INFLUENCE OF THE EXTERN FACTORS ONTHE WALLS
OF THE METALLIC BULKHEADS FOR PROTECTING THE
RIVER IN CASE OF NATURAL DISASTERS
The paper aims to influence of a specific factors in case of flood (flow,
the flow rate of water) concerning the walls of the metallic bulkheads used for
protecting the banks of the rivers
Keywords: bulkhead, flood, flow, flow rate, distortion walls
Cuvinte cheie:batardou, inundaţii, debit, viteză, deformaţii pereţi

Descărcare text


17-44 Simularea încercării de compresiune pe tampoane la un vagon cisternă cu ajutorul metodelor numerice

COMPRESSIVE BUFFER TEST SIMULATION FOR A TANK WAGON USING NUMERICAL METHODS
The numerical methods are used for railway vehicles design. Before
manufacturing, the virtual model of the wagon can be performing a finite
element analyses in purpose to improve the design. But, one of the error
sources during finite element analyses can be how the loads are applied.
Cuvinte cheie: vagon cisternă, elemente finite, Ansys, forte

Descarcare text


28-63 OPTIMIZAREA FABRICAȚIEI PĂRȚILOR ACTIVE ȘI ELEMENTELOR DE GHIDARE ALE ȘTANȚELOR ȘI MATRIȚELOR

OPTIMIZING PRODUCTION WORK AND GUIDING
ELEMENTS OF DIES AND MOLDS
This paper analyses the behaviour of the active parts and guidance elements of dies and moulds in the complex production process.
Analysis concerns the duration of use, number of uses without regrinding in different lubrications conditions.
Keywords: punching moulds, active part, guiding elements, number of uses
Cuvinte cheie: ștanțe-matrițe, părți active, elemente ghidare, număr de utilizări

Descarcare text


28-15 STUDIUL EXPERIMENTAL AL COMPORTĂRII CAROSERIILOR AUTOVEHICULELOR DE TRANSPORT PERSOANE

EXPERIMENTAL STUDY OF THE BEHAVIOR OF PASSENGER VEHICLE BODIES
It can be affirmed that the movement has emerged with the advent of motor transport. If the early use of these means of transport, traffic accidents is produced with low frequency, at the present time, due to the unprecedented increase in traffic, traffic accident has become an acute social problem. As a result, over time, it has acted in the following three major directions: the traffic Regulation by a legal system, increase the level of performance of active safety provided by the motor vehicle, increasing the level of passive safety performance ensured by the motor vehicle.
Keywords: experimental study, bodywork, vehicle
Cuvinte cheie: studiul experimental, caroserie, autovehicul

Descarcare text 


28-13 POLUAREA SONORĂ ÎN AUTOVEHICULE. STADIUL ACTUAL

NOISE IN MOTOR VEHICLES. CURENT STATUS
In contrast to many other environmental problems, noise pollution continues to increase thanks to industrial, social and transportation field development. The paper analyses specific aspects on the impacts of noise on health, to identify areas for priority action and remediation measures.
Keywords: stage, vibroacustical, sound level meters
Cuvinte cheie: stadiul actual, vibroacustica, sonometre

Descarcare text


27-81 CONCLUZII ŞI CONTRIBUŢII PERSONALE LA CONFIRMAREA REZULTATELOR NUMERICE PRIN ANALIZA REZULTATELOR OBŢINUTE EXPERIMENTAL, PENTRU VAGONUL DESCOPERIT CU PEREŢI ÎNALŢI

CONCLUSIONS AND PERSONAL CONTRIBUTIONS
TO THE CONFIRMATION NUMBER OF RESULTS
BY ANALYZING EXPERIMENTAL RESULTS,
WAGON DISCOVER HIGH WALLS
This article aims to confirm the results obtained using the finite element method to simulate the compression on a freight wagon buffers discovered by high walls Comparing the numerical results with experimental results obtained with the method of resistive electric tensometry.
Keywords: cargo wagon, finite elements, stresses, deformations
Cuvinte cheie: vagon de marfă, elemente finite, tensiuni, deformaţii

Descarcare text


27-77 ANALIZA EXPERIMENTALĂ A UNOR PARAPETE DE PROTECŢIE CE ECHIPEAZĂ CĂILE RUTIERE, CA MODELE FUNCŢIONALE Partea a II-a

EXPERIMENTAL ANALYSIS OF SOME
PROTECTION PARAPETS EQUIPPING ROADS,
AS A FUNCTIONAL MODEL – PART II
The objective of this paper is to present the analysis of constructive solutions for protective barriers shock devices that use elastic elements, more efficient than normal operations designed to handle and mitigate some of the energy developed when the shock. These are in the form of concentrated damping systems mounted clamping area of the parapet of the tower.
Keywords: protective parapets, shock absorbers devices, concentrated dampers, elastic elements
Cuvinte cheie: parapete de protecţie, dispozitive amortizoare, amortizoare concentrate, elemente elastice

Descarcare text


27-76 ANALIZA EXPERIMENTALĂ A UNOR PARAPETE DE PROTECŢIE CE ECHIPEAZĂ CĂILE RUTIERE, CA MODELE FUNCŢIONALE Partea I-a

EXPERIMENTAL ANALYSIS OF SOME
PROTECTION PARAPETS EQUIPPING ROADS,
AS A FUNCTIONAL MODEL – PART I
The objective of this paper is to present the analysis of constructive solutions for protective barriers shock devices that use elastic elements, more efficient than normal operations designed to handle and mitigate some of the energy developed when the shock. These are in the form of concentrated damping systems mounted clamping area of the parapet of the tower.
Keywords: protective parapets, shock absorbers devices, concentrated dampers, elastic elements
Cuvinte cheie: parapete de protecţie, dispozitive amortizoare, amortizoare concentrate, elemente elastice

Descarcare text


27-50 OPTIMIZAREA FORMEI DISCULUI VANEI FLUTURE CU COEFICIENT DE REZISTENȚĂ HIDRAULICĂ DE 0,07

BUTTERFLY VALVE DISC SHAPE OPTIMISATION FOR HYDRAULIC RESISTANCE COEFFICIENT 0.07
The paper presents the optimization of butterfly valve disc shape to obtain hydraulic resistance coefficient 0.07 by numerical methods and by experimental measurements realized in Hydro-Engineering Co. Reşiţa. It is presented the test stand, the optimized butterfly valve disc model which measurements were made and the results of model tests. The results of model tests conducted by similarity criterion for butterfly valve with nominal diameter 4900 mm and nominal pressure of 170 mwc consists of determining the hydraulic resistance coefficient and consequently the flow coefficient and the determination of forces and moment coefficients, the coefficient of cavitation and vibration level.
Keywords: disc butterfly valve, hydraulic resistance coefficient, numerical analysis
Cuvinte cheie: disc vană fluture, coeficient de rezistență hidraulică, analiză numerică

Descarcare text


26-43 EVALUAREA EXPERIMENTALĂ A CONFORMITĂŢII CAROSERIILOR AUTOVEHICULELOR DE TRANSPORT URBAN

EXPERIMENTAL EVALUATION OF CONFORMITY OF URBAN TRANSPORT VEHICLES BODYWORKS
It can be affirmed that the movement has emerged with the advent of motor transport. If the early use of these means of transport, traffic accidents is produced with low frequency, at the present time, due to the unprecedented increase in traffic, traffic accident has become an acute social problem. As a result, over time, it has acted in the following three major directions: the traffic. Regulation by a legal system, increase the level of performance of active safety provided by the motor vehicle, increasing the level of passive safety performance ensured by the motor vehicle.
Keywords: vehicle, bodywork, experimental testing

Descărcare text


25-85 VERIFICAREA STRUCTURII DE REZISTENŢĂ LA VAGOANELE DE MARFĂ DESCOPERITE CU PEREŢI ÎNALŢI UTILIZATE ÎN TRANSPORTURILE UZINALE CU METODA ELEMENTELOR FINITE

CHECKING THE STRUCTURE OF RESISTANCE FREIGHT
WAGONS DISCOVER HIGH WALL IN TRANSPORT
FACTORIES FINITE ELEMENTS
This article aims to examine the structure simulating resistance to
compression of the buffers a freight wagon found with high walls used in
factories and railways removal solution validation platform Handbrake finite
element method.
Keywords: transport, freight wagon power roads, finite elements
Cuvinte cheie: vagon de marfă, transporturi uzinale, elemente finite
Descarcare text


25-73 EVALUAREA TEORETICĂ A PERFORMANȚELOR UNEI BARIERE DE SIGURANȚĂ RUTIERĂ

THEORETICAL PERFORMANCE EVALUATION
OF A TRAFFIC SAFETY BARRIER
By definition, the railing is a wall or a railing of little height which serves
to delimit the edge of a road, a bridge, aimed at stopping vehicles and
restoration mainly on the carriageway, pedestrians and conveyance of other
road users. Protective guardrail road safety ensures good road contact because
a vehicle deforms elastically, annihilating shock.
Keywords: enclosures, endurance, steel, deformation, protection
Cuvinte cheie: carcase, rezistență, oţel, deformare, protecţie
Descarcare text


19-95 MODIFICAREA STRUCTURII PORTANTE A VAGOANELOR CISTERNĂ ÎN VEDEREA CREŞTERII SARCINII PE OSIE ŞI MICŞORAREA TAREI VEHICULULUI

TANK WAGON BODY CHANGING IN PURPOSE TO
INCREASE AXLE LOAD AND TARE VEHICLE DECREASING
Lifetime of a railway wagon is around 30 year. During that time,
periodical revisions are made. In some cases, the wagon is subject to
modernization programs, which can prolong the lifetime of the wagon to 40
years or more. In some cases the wagon’s owner wish to increase wagonload
capacity in purpose to transport more, because 1 tone of load can increase
exponentially the value of the wagon.
Keywords: tank wagon, finite elements, Ansys, increasing container capacity
Cuvinte cheie: vagon cisternă, elemente finite, Ansys, creşterea
capacităţii recipientului

95 MODIFICAREA STRUCTURII PORTANTE A


23-80 STUDIUL MODELELOR 2D CU AJUTORUL METODEI ELEMENTELOR FINITE

2D MODELS STUDY USING FINITE ELEMENT METHOD
2D models can be used for probe modelling in purpose to perform finite
element analysis in a small time. The 2D model can be the result from a 3D
model.
Cuvinte cheie: epruvete, model 2D, model 3D, elemente finite
Keywords: 2D, pattern pieces, 3D model, finite elements

23-80 STUDIUL MODELELOR 2D CU AJUTORUL


24-24 SIMULAREA COMPRESIUNII PE TAMPOANELE UNUI VAGON DE MARFĂ UTILIZAT ÎN TRANSPORTURILE UZINALE CU METODA ELEMENTELOR FINITE

FREIGHT WAGON USED FOR FACTORY TRANSPORT
COMPRESSION BUFFERS SIMULATION USING FINITE
ELEMENTS METHOD
Finite elements method is one of most powerful instrument of the
mechanical engineer do its versatility. Finite element method was developed by
aeronautical engineers but since his appearance the method was use also in
other fields like automotive, civil engineering etc.
Cuvinte cheie: vagon de marfă, cale ferată uzinală, elemente finite
Keywords: freight wagon, the railroad of the plant, finite elements

24 SIMULAREA COMPRESIUNII PE TAMPOANELE UNUI VAGON DE MARFĂ UTILIZAT ÎN TRANSPORTURILE UZINALE CU METODA ELEMENTELOR FINITE


24-53 REZULTATE ALE SIMULĂRII COMPUTERIZATE A CURGERII PRIN TURBINA CROSS-FLOW TIP HYE 10a

RESULTS OF COMPUTATIONAL FLUID DYNAMICS
SIMULATION THROUGH HYE 10a CROSS-FLOW TURBINE
In this paper are presented the results of CFD simulations performed
on turbine named HYE 10, made at the S.C. Hydro Engineering SA Resita. The
cross-flow turbine equips a micro-hydro power unit with 8.25 kW calculated
hydraulic power.
Cuvinte cheie: rezultate, simulare computerizată, curgere, putere
hidraulică, 8,25 kW
Keywords: results, computational fluid dynamics, flow, hydraulic power,
8.25 kW

53 REZULTATE ALE SIMULĂRII COMPUTERIZATE A CURGERII PRIN TURBINA CROSS-FLOW TIP HYE 10a


21-93 METODE DE PROIECTARE ŞI VERIFICARE A STRUCTURILOR DE REZISTENŢĂ LA VEHICULELE FEROVIARE

METHODS FOR DESIGN AND VERIFICATION OF
STRUCTURES OF RESISTANCE FROM RAILWAY VEHICLES
The girl is to analyse the methods of design and verification of
structures of resistance from railway vehicles used over time in railway
transport.
Cuvinte cheie: metoda elemntelor finite, material rulant, tensiuni,
deformaţii.
Keywords: method elemntelor finished, rolling, tension, strain

93 METODE DE PROIECTARE ŞI VERIFICARE


21-83 ÎNCERCĂRI SPECIFICE DE REZISTENŢĂ LA AMORTIZOARE DE ŞOC DIN POLIETILENĂ

POLYETHYLENE SHOCK ABSORBER STRENGTH
SPECIFIC TESTS
Working on high structures is one of the jobs in the cities vertically
developed. The abilities of climb workers are used in purpose to mount publicity
banners, to clean building face, to mount objects on buildings etc.
The use of fall arrester equipment is made under strictly surveillance
and schooling of the workers because of imminence of the accidents. Before
sailing, the fall arrester equipment are tested and certificated.
Cuvinte cheie: încercări, polietilenă, MGC, tensometrie
Keywords: testing, polyethylene, GMC, tensometers

83 ÎNCERCĂRI SPECIFICE DE REZISTENŢĂ LA


22-53 SUDAREA CU ARC ELECTRIC FOLOSIND ELECTROD NEFUZIBIL ÎN MEDIU DE GAZE INERTE WIG

IGT process has a higher universality in terms of basic metals MB but
is particularly recommended for welding thin components, the works of great
finesse and aesthetics where junctions. The main advantages of the TIG
process are: the volume affected by the welding heat is reduced can adjusted
be precisely and widely in the amount of heat entering their components during
welding.
Cuvinte cheie: sudare, procedeul WIG, materiale de sudare
Keywords: welding, WIG process, welding materials

53 SUDAREA CU ARC ELECTRIC FOLOSIND ELECTROD


22-44 COMPORTAREA OŢELULUI PENTRU CONSTRUCŢII LA TEMPERATURI ÎNALTE

The purpose of the present paper is to determine the response of
main elements and resistance structures to extreme circumstances, specifically
to action of conflagration, considering the temperature distribution inside
structure’s elements, materials characteristics – steel for this case – following
the determination of thermo-mechanic response of main elements and
resistance structures.
Cuvinte cheie: rezistenţă, temperatură, oţel, structură
Keywords: strength, temperature, steel structure

44 COMPORTAREA OŢELULUI PENTRU CONSTRUCŢII