Technical feasibility

PART a: IDENTIFICATION OF R&D Result

PARTEA A: Identificarea rezultatului cercetării-deZvoltării (CD)

·         The project team

             Echipa proiectului

Advisor’s Name:Nume:  Dumitru Constantin
Phone:Telefon:  +40.723.163396
E-mail: dumitrudc10@yahoo.com 
Expecting date of valorization plan submission:Data aşteptată pentru trimiterea planului de valorizare  27.02.2012

·         Identification of R&D activity

Identificarea activităţii de cercetare-dezvoltare (CD)

Acronym:Acronim: CSRMS_Correlation strength-rigidity for a metallic structure
Author of the R&D result:Autorul rezultatului CD:  Dr. Eng. Ilincioiu Dan
Company or University:Companie sau Universitate:  UNIVERSITY OF  CRAIOVA, ROMANIA 
Phone:Telefon:  +40.723.038606
E-mail: danilin@mecanica.ucv.ro  
Sector:Domeniu:  ENG – Engineering
Type of the R&D result:Tipul rezultatului CD:  Model matematic

PART B: VALORISATION PLAN

Partea B: Planul de valorizare

SECTION I: Testing

SECŢIUNEA I: Testarea/încercarea

 

1

Has the R & D result been tested?A fost testat/încercat rezultatul CD?

YES

Da

NO

Nu

NO

 

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:

 

1a

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 resultsVa rugăm să descrieţi rezultatele testate/încercate

 

If no:

Dacă răspunsul a fost NU:

1c

Describe what type of testing does the R&D result need?Descrieţi ce tip de testare/încercare necesită rezultatul CD?
Detailed commentComentariu detaliat

Validation is primarily a process of comparison of model and its behaviour with the real system and its evolution.

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

 

The loadings values and the beam length (the spaces on the beam) crucially influences the strength calculus and do not permit generalizations not even in the same constructive type.

 

The support stiffening makes the beam loading to decrease, leading to section decrease (material saving). Extra, the rigidity condition leads to section dimensions closer to the ones given by the strength condition.

 

Material saving must not be taken “straight meaning” because the stiffening involve additional materials usage that diminishes the positive effect; nevertheless it must be underlined that the stiffening on the supports are a solution of increasing the beams strength, the more so as the stiffening solution are more rational and do not lead to sections increasing of adjacent structure elements.

 

Those stated before are sustained with numerically values by applying to the calculus model defined for a real constructive solution (F=4000 daN, Q=2000 daN, a=b=c=200 cm, sa=2000 daN/cm2, fa=0.8 cm).

 

1d. What is the time needed for testing?Care este perioada de timp necesară testări?
Time needed for testing and probing is estimated at 30 working days.
1e. What is the cost needed for testing?Care este costul necesar pentru testare?
Costs of research and validation of results are estimated at Euro 1300. Costs related to testing and probing of numerical model are estimated to be 1000 Euro.

SECTION 2: Current Stage of Development

SECŢIUNEA 2: Stadiul actual de dezvoltare

 

2a

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 has the available human resources to develop a numerical model for the correlation strength & rigidity for a metal structure. Experts required to complete the team are computer science staff (programmers).The research result comes out of experimentation conducted by a team of experts who pursue to optimize these results further.In this respect, the team of experts is available for technical advice, so that potential partners can start practical implementation of new software product.

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

 

2b

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 the research:
- To produce a mathematical model for the correlation strength & rigidity for metal structures;
- Developing the computer program;
- Software design.It is studied the degree schematization (approximation) effect over the strength calculus of a structural element from a metallic construction. There are analyzed the effect of different conditioning used in strength calculus of a beam for classifying in the importance order.

 

It is especially followed the assignation of recommended calculus hypothesis used in designing the component beams of metallic structures. There are defined some appreciation criteria of the applied hypothesis effect in the calculus strength schemes of metallic structures.

 

2c

What additional technical resources are needed for the production of this new product?Ce resurse tehnice suplimentare sunt necesare pentru fabricarea acestui nou produs?
Further research is needed to be done by specialized companies in designing the ​computer program for correlating strength & rigidity for a metal structure.

 

 

2d

Overall assessment of the current stage of technical development.Evaluarea generală a stadiului actual de dezvoltare tehnică
Detailed commentComentariu detaliatA metallic structure, that has a main strength role in the construction assembly, is designed to sustain effective loadings. Mostly, the strains are ignored or a coarse checking is made, based on arbitrary restrictions. Also there are often simplifications made that places  us – in strength calculus – far away from the real phenomenon.

 

It is proposed the strength analysis of a static defined beam for distinguishing the quantitative effect of various simplifying assumptions. It will be researched the neglecting effect of own mass and elasticity (deformability) of supports; it is followed the effect of support idealization and the real mechanical phenomenon of coupling with the rest of the structure remainder.

 

Mechanical quantification effect of various simplifying assumptions will be made by referring to the main phenomenon which is the mechanical stress produced in the material. The mechanical stress will be correlated with strain; it will be revealed the effect on the material quantity correctly used at building the structure.

 

For simplifying the following of main loading phenomena, it will be used the beams with circular section, the main phenomenon won’t be customised by this simplification because, initially, the sections are involved by are, inertia moments and axial strength modulus which gives generality to the present study.

 

For effect quantification of different simplifying assumptions it will be considered as reference model the simple supported beam on an ideal-rigid structure. The supports will be ideal and will introduce only a reaction-force normal on the beam. The other situations (with own weight, elastic supports etc.) will be referred to this situation considered as a reference one.

 

SECTION 3: Deployment

SECŢIUNEA 3: Lansarea în fabricaţie

3a

Define the demands for large scale production in terms ofDefiniţi cererea pentru producţia de masă în funcţie de:
  • Materials
  • Materiale
After creating and testing the numerical model, setting of all suppliers of materials, components and sub-assemblies, as well as delivery terms, then it is going to implement it in practice, namely to promote it on domestic foreign markets.
  • technologies, tools, machineries
  • Tehnologii, utilaje, maşini
To implement the evaluated numerical model in practice, the following are required:
- Assumptions and calculations of strength;
- PC computers, printer, photocopier, graphic stations.
  • Staff effort
  • Resurse umane
Estimated human resource requirements:
- market survey personnel;
- staff for investment;
- staff for operator’s training;
- staff for activities of advertising, publicity and expertise.

 

 

SECTION 4: Overall Assessment

SECŢIUNEA 4: Evaluare generală

 

1

What is you overall assessment of the technical feasibility of the research result?Care este evaluarea generală a fezabilităţii tehnice pentru rezultatul CD?
From the numerical results analysis, there can be observed similar phenomena with the ones previously shown (the general ones), in this way:- the own weight has negligible on the necessary material quantity (almost 3% higher); so there can be made calculations with a better precision taking into account only the exterior loadings (concentrated);- the own weight must be take into account if there are compactions in supports;

- the stiffening to the supports spinning lead to material saving in a significant quantity, but not a huge one. This fact also recommends studying the consumptions for rigidity before a final conclusion;

- the high length of the cantilever imposes its decisive influence, especially in the case of rigidity condition; this fact is mostly shown by ratio ε4 that gives the deflection on the cantilever and four times higher than the admissible one (with section from the strength condition). The leading character of the cantilever is also shown by the fact that, if the strength condition is imposed, the section is not influenced by the supports rigidity;

- spin rigidity of the supports has negligible influence on the deflection between the supports, but it can decrease de cantilever arrow with significant values (maximum 30%).

 

As an essential conclusion, generally true for the present study, is the one referred to the structure strains that have a very big importance in structural element strength-metallic beam. Because the imposed strain leads to great material consumptions, we must not exaggerate in this conditioning; when it is possible, we would the responsibility of the beam maximum loading to be transferred on the mechanic stress conditions (strength ones).

 

The model is of interest for its implementation in practice, ie its promotion on domestic and foreign markets.

 

KEYWORDS QUANTITATIVE ASSESSMENT (0-5).

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 farGradul de adecvare al activităţii de testare desfăşurate pănă în prezent X
Adequacy and availability of technical resources of the development teamGradul de adecvare şi disponibilitatea resurselor tehnice ale echipei X
Current development stageStadiul actual de dezvoltare X
Overall technical feasibilityFezabilitatea tehnică generală X

 

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: http://www.urenio.org/intervalue/.

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: http://www.urenio.org/intervalue/.

 

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