Dorian NEDELCU


29-72 RECONSTITUIREA GEOMETRIEI COMPONENTELOR MECANICE PRIN FOTOGRAMETRIE PARTEA A II-A

3D RECONSTRUCTION OF THE MECHANICAL PARTS
GEOMETRY THROUGH PHOTOGRAMMETRY – PART II
The paper has the following objectives: to describe the
Photogrammetry technique, to present its principles and results, to review
photogrammetry software and to exemplify some applications in the field of
mechanical parts that were made with said software.
Keywords: photogrammetry, part, mechanical
Cuvinte cheie: fotogrametrie, componente, mecanice

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29-71 RECONSTITUIREA GEOMETRIEI COMPONENTELOR MECANICE PRIN FOTOGRAMETRIE PARTEA I

3D RECONSTRUCTION OF THE MECHANICAL PARTS
GEOMETRY THROUGH PHOTOGRAMMETRY – PART I
The paper has the following objectives: to describe the
Photogrammetry technique, to present its principles and results, to review
photogrammetry software and to exemplify some applications in the field of
mechanical parts that were made with said software.
Keywords: photogrammetry, part, mechanical
Cuvinte cheie: fotogrametrie, componente, mecanice

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27-52 CONSIDERAŢII PRIVIND CONCEPŢIA MODELULUI DE VANĂ FLUTURE DESTINAT EFECTUĂRII CERCETĂRILOR EXPERIMENTALE

CONSIDERATIONS REGARDING THE BUTTERFLY VALVE MODEL DESIGN TO PERFORM THE EXPERIMENTAL RESEARCH
The paper presents a model of butterfly valve designed to perform experimental research in the laboratory to determine the functional parameters of industrial (prototype) butterfly valve. The model is designed considering the Froude similarity criterion based on the geometric dimensions and the design of the prototype valve having a nominal diameter of 4.9 m and operates at a pressure of 17.1 bar. The paper presents adaptations designed model can be mounted on the test bench for hydraulic turbines and experimental research can be obtained putting in optimal conditions.
Keywords: Butterfly valve model, testing stand, experimental research, similitude criterion
Cuvinte cheie: model de vană fluture, ştand se încercări, cercetări experimentale, criterii de similitudine

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27-51 CONSIDERAŢII PRIVIND CERCETĂRILE EXPERIMENTALE REALIZATE PE UN MODEL DE VANĂ FLUTURE

CONSIDERATIONS REGARDING THE EXPERIMENTAL RESEARCH PERFORM BY AN BUTTERFLY VALVE MODEL
The paper presents experimental research performed on a model of butterfly valve in the test stand of the testing laboratory to determine the functional parameters of a prototype butterfly valves ND 4900 mm who operating at a pressure NP17 bar. The valve model is designed and executed based on design and the size butterfly valve prototype applying Froude similarity criterion. It is presented the test stand and the experimental research results obtained regarding to 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: Experimental research, butterfly valve model, testing stand, coefficients
Cuvinte cheie: cercetări experimentale, model de vană fluture, stand de încercări, coeficienţi

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26-77 APLICAREA INGINERIEI INVERSE PENTRU RECONSTRUCŢIA GEOMETRIEI UNUI DRAGON

THE REVERSE ENGINEERING OF A DRAGOON
The objective of the application is to describe the reverse engineering stages to transform a real dragoon object into a virtual geometry, using the Noomeo Optinum 3D scanner, Numisoft, Geomagic Wrap and Rapidform XOR3 software.
Keywords: Reverse Engineering, 3D scanner, dragoon

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25-58 CONSIDERAŢII PRIVIND OPTIMIZAREA FORMEI DISCULUI LA O VANĂ FLUTURE PENTRU REDUCEREA COEFICIENTULUI DE REZISTENŢĂ HIDRAULICĂ

CONSIDERATIONS REGARDING THE BUTTERFLY VALVE
DISK SHAPE OPTIMISATION FOR DECREASING OF THE
RESISTANCE COEFFICIENT
The paper presents the optimization of the butterfly valve disc shape
to obtain a hydraulic resistance coefficient of 0.07 by numerical methods and by
experimental measurements. The optimized butterfly valve disc model on which
measurements were done and the results of the model tests are presented.
The results of the model tests consist of determining the hydraulic resistance
coefficient and consequently the flow coefficient and of the forces and moment
coefficients, the coefficient of cavitation and vibration level.
Keywords: van butterfly, disc biplane, coefficient of resistance
Hydraulic, numerical methods
Cuvinte cheie: vană fluture, disc biplan, coeficient de rezistenţă
hidraulică, metode numerice
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20-37 CALCULUL FORŢEI AERODINAMICE ŞI DISTRIBUŢIEI DE PRESIUNI PENTRU UN COŞ VERTICAL

AERODYNAMIC FORCE AND PRESSURE DISTRIBUTION
CALCULUS FOR A VERTICAL FUNNEL
The objective of the application is to determine the aerodynamic force
and pressure distribution resulted from wind action applied on a vertical funnel with
diameter D = Ø3 m and height H = 54 m. The velocity of the air stream is 20 m/s
and air density is 1.2 kg/m3. The objective of the application is to compare the
results predicted by Solid Works Flow Simulation with experimental data.
Keywords: aerodynamic forces, pressure distribution, Flow Simulation
Cuvinte cheie: forţă aerodinamică, distribuţie presiuni, Flow Simulation

37 CALCULUL FORŢEI AERODINAMICE ŞI DISTRIBUŢIEI


23-57 APLICAREA INGINERIEI INVERSE PENTRU RECONSTRUCŢIA GEOMETRIEI UNUI ROTOR

THE REVERSE ENGINEERING OF A RUNNER
The objective of the application is to describe the reverse engineering
stages to transform a real runner into a virtual geometry, using the Noomeo
Optinum 3D scanner, Numisoft and Rapidform XOR3 software.
Cuvinte cheie: Inginerie inversă, scaner 3D, rotor
Keywords: Reverse Engineering, 3D scanner, runner

23-57 APLICAREA INGINERIEI INVERSE PENTRU RECONSTRUCŢIA GEOMETRIEI UNUI ROTOR


23-73 STUDIUL NUMERIC AL CONCENTRATORULUI DE TENSIUNE PENTRU O BARĂ CU CRESTĂTURI ÎN „V” SUPUSĂ SOLICITĂRII DE ÎNTINDERE

A NUMERICAL STUDY OF THE LOCAL STRESS FOR A
RECTANGULAR BAR WITH OPPOSITE EDGE V-NOTCHES
LOADED WITH TENSILE FORCE
The application present a numerical study of the local stress for a
rectangular bar with opposite edge V-notches loaded with tensile force and
comparative results of the SolidWorks Simulation and experimental data, for
various geometrical modifications.
Cuvinte cheie: simulare, SolidWorks, bară, concentrator
Keywords: simulation, SolidWorks, bar, stress concentrator

23-73 STUDIUL NUMERIC AL CONCENTRATORULUI DE TENSIUNE PENTRU O BARĂ CU CRESTĂTURI ÎN „V” SUPUSĂ SOLICITĂRII DE ÎNTINDERE


24-59 CONSIDERAŢII PRIVIND SOLUŢII MODERNE ÎN PROIECTAREA VANELOR FLUTURE CU DISC BIPLAN

CONSIDERATIONS REGARDING THE DESIGN MODERN
SOLUTIONS OF THE BUTTERFLY VALVES
WITH THE BIPLANE DISK
The present work has the purpose to analyse the modern solutions
regarding the design of the butterfly valves with biplane disk. The work is
divided in two parts:
1. Butterfly valve general assembly.
2. Butterfly valve.
Cuvinte cheie: vană fluture, disc biplan, corp vană, etanşare, soluţii
constructive.
Key words: butterfly valve, biplane disk, valve body, sealing,
constructive solutions.

59 CONSIDERAŢII PRIVIND SOLUŢII MODERNE ÎN PROIECTAREA VANELOR FLUTURE CU DISC BIPLAN


21-102 RECONSTITUIREA GEOMETRIEI UNUI IMPLANT DE GENUNCHI

REVERSE ENGINEERING OF A KNEE IMPLANT
The objective of the application is to describe the reverse engineering
stages to transform a real knee implant into a virtual geometry, using the
Noomeo Optinum 3D scanner, Numisoft and Rapidform XOR3 software.
Cuvinte cheie: inginerie inversă, scanner 3D, implant
Keywords: Reverse Engineering, 3D scanner, implant

102 RECONSTITUIREA GEOMETRIEI UNUI


22-43 PROTOTIPAREA RAPIDĂ A UNUI ROTOR PELTON

The objective of the application is to describe the rapid prototyping
stages to transform a Pelton runner from the virtual geometry created in Solid
Works software into a real part, using the Objet Desktop 30 Printer.
Cuvinte cheie: Rapid Prototyping, Pelton, alergător
Keywords: Rapid Prototyping, Pelton, runner

43 PROTOTIPAREA RAPIDĂ A UNUI ROTOR PELTON