Technical feasibility


PARTEA A: Identificarea rezultatului cercetării-deZvoltării (CD)

·         The project team

             Echipa proiectului

Advisor’s Name:


Department of Technologies and Materials

Project: Models for Numerical Simulation of Extrusion Stamping Processes for Metallic Powders Sintered Pre-shapes



Expecting date of valorization plan submission:

Data aşteptată pentru trimiterea planului de valorizare


·         Identification of R&D activity

Identificarea activităţii de cercetare-dezvoltare (CD)



Author of the R&D result:

Autorul rezultatului CD:

 Dr. Eng. Dumitru Constantin
Company or University:

Companie sau Universitate:







 ENG – Engineering
Type of the R&D result:

Tipul rezultatului CD:

  Information Product




Partea B: Planul de valorizare

SECTION I: Testing

SECŢIUNEA I: Testarea/încercarea



Has the R & D result been tested?

A fost testat/încercat rezultatul CD?








The following question is replied according to the reply in question 1

Următoarea întrebare este formulată în legătură cu răspunsul la întrebarea 1


If yes

Dacă răspunsul a fost DA:



In what mode has the result been tested?

•           Prototype

•           Pilot Application

•           Alpha/BETA testing

În ce mod a fost testat/încercat rezultatul?

•           Prototip

•           Aplicaţie Pilot

•           Incercare Alpha/BETA



1b. Please describe and discuss the testing results

Va rugăm să descrieţi rezultatele testate/încercate



If no:

Dacă răspunsul a fost NU:


Describe what type of testing does the R&D result need?

Descrieţi ce tip de testare/încercare necesită rezultatul CD?

Detailed comment

Comentariu detaliat


The validation process  of the numerical simulation model of molding process by extrusion of sintered pre-shapes made of metal powders has two features:


• producing a model representing the real system behavior to the extent that it can substitute it;
• achieve an acceptable level of reliability of the model.

Validation is primarily a comparison process of  the  model and its behavior to the real system  and its evolution. Calibration is an iterative process of comparing the model with the real system, by making adjustments or major changes to the model, and comparing the revised model with reality.

Validation process of a model includes three stages:
• building a model with high degree of validity;
• validation of model assumptions;
• comparing the sizes of input / output model with the real system.

The first two stages comply with the input data modeling stage, while the third stage involves comparing the input / output sizes of model with the ones of the real system by using statistical formulas.

1d. What is the time needed for testing?

Care este perioada de timp necesară testări?

The time for testing, probing and homologation is expected to be about 60 working days.
1e. What is the cost needed for testing?

Care este costul necesar pentru testare?

The costs of research and results’ validation are estimated at 3,500 Euro.  The costs for testing, probing homologation of numerical model are estimated to be 1,000 Euro.

SECTION 2: Current Stage of Development

SECŢIUNEA 2: Stadiul actual de dezvoltare



To what extent does the development team have technical resources for supporting the production of a new product? (Researchers, human resources, hardware, etc. )

În ce măsură dispune echipa de resursele necesare pentru a asigura fabricarea noului produs? (Cercetători, resurse umane, hardware, etc.)


The research team of the Faculty of Mechanical Engineering from the University of Craiova has a long time experience in both research and teaching activities in terms of:
- Innovation and support in numerical modeling of technological processes;
- Graphical modeling and application of advanced technologies in molding by extrusion of sintered pre-shapes;
- Rationalization, modernization and mechanical & technological design related to powder metallurgy.

The existence within the organization of equipment and software is a sound basis for design, testing and probing stages.


What are the technical issues that need to be tackled for full deployment, if needed?

Care sunt aspectele tehnice ce trebuie abordate pentru lansarea în fabricaţie, dacă sunt necesare?


Technical issues to be addressed for practical implementation of research:
- Producing a numerical simulation of molding  processes by extrusion of sintered pre-shapes made of metal powders to be used in industrial purposes;
- Optimization of technological parameters and computer-aided design of  tools;
The model developed is comprising the general equation of trajectories for material particles flow within the deformation area, the variation of motion speed, the basic elastic-plastic equations for large deformations.


What additional technical resources are needed for the production of this new product?

Ce resurse tehnice suplimentare sunt necesare pentru fabricarea acestui nou produs?





Overall assessment of the current stage of technical development.

Evaluarea generală a stadiului actual de dezvoltare tehnică

Detailed comment

Comentariu detaliat


In literature there are certain models that are more or less closer to the actual material flow. The model taken into account the material flow considered the material particles moving in curved paths after the outbreak strain, close to the shape of co sinusoid branch.

Choosing an appropriate software product and the accurate  & precise process modeling enable performing  a correct simulation whereby the errors are minimal.

SECTION 3: Deployment

SECŢIUNEA 3: Lansarea în fabricaţie


Define the demands for large scale production in terms of

Definiţi cererea pentru producţia de masă în funcţie de:

  • Materials
  • Materiale
After creating and testing the experimental model, setting-up all suppliers of materials, components and sub-assemblies required achieving the numerical model to simulate the molding process by extrusion of sintered products, as well as delivery terms, can proceed to implementation in production, namely the promotion of product on domestic and international market.


  • technologies, tools, machineries
  • Tehnologii, utilaje, maşini
To implement the numerical model evaluated in practice, are necessary:
- Identification of molding technology;
- PC computer, printer, photocopier, graphic stations.
  • Staff effort
  • Resurse umane
Estimated human resource requirements:
- Market survey personnel;
- Investment dept personnel;
- Personnel to train operators;
- Personnel for  advertising, publicity  and expertise activities.

SECTION 4: Overall Assessment

SECŢIUNEA 4: Evaluare generală


What is you overall assessment of the technical feasibility of the research result?

Care este evaluarea generală a fezabilităţii tehnice pentru rezultatul CD?

Modeling of molding by extrusion by help of MEF, under simplifying the pre-shape and reducing it to the early phase of the process, enables  precise calculation of the value of minimum pressure required for extrusion;  drawing the stress iso-values ​​within the material to be deformed material at different time steps, respectively interpretation of material in the pre-shape. This aspect, associated with deformations image, can be a key factor in determining the shape and size of pre-shape designed to be under deformation.

The results of simulation are used to represent non-uniformity of deformation obtained by using a computer program for molding by extrusion a complex profile, matching different deformation degrees.

The model is of interest for it practical implementation, namely its promotion on domestic and international market.



Evaluare cantitativă (0-5)


Please put X as appropriate.

Vă rugăm să marcaţi cu X  punctajul considerat corespunzător

  1 2 3 4 5
Adequacy of testing activity undertaken so far

Gradul de adecvare al activităţii de testare desfăşurate pănă în prezent

Adequacy and availability of technical resources of the development team

Gradul de adecvare şi disponibilitatea resurselor tehnice ale echipei

Current development stage

Stadiul actual de dezvoltare

Overall technical feasibility

Fezabilitatea tehnică generală



We agree that all informations contained in this form to be made public in the project „Inter-regional cooperation for valorization of research results – INTERVALUE”, by publication on the project website:

Suntem de acord ca informaţiile cuprinse în acest formular să fie făcute publice în cadrul proiectului „Inter-regional cooperation for valorization of research results – INTERVALUE”, prin publicarea lor pe site-ul proiectului, la adresa:

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