Projects / Programmes
January 1, 2004
- December 31, 2008
| Code |
Science |
Field |
Subfield |
| 2.11.00 |
Engineering sciences and technologies |
Mechanical design |
|
| Code |
Science |
Field |
| T120 |
Technological sciences |
Systems engineering, computer technology |
Operation state prediction, RMS quantities, operational state modelling and simulation
Researchers (20)
Organisations (2)
Abstract
The efficiency of a component, assembly or final product producer primarily depends on its ability to persuade the customer of the product quality. The producer has to carry out the development procedure of a new product in such a way that it is able to economically predict with low risk and in early design stages a part or all of 45 quantities, characteristics, properties of the product in its usage phase (e.g. functionality, durability, reliability, maintainability, supportability, ergonomics, ecological worth, aesthetic value, production and usage economy).
The development prediction of the product properties, characteristics or product worth in the usage phase are based on the theoretical knowledge in the fields, such as: probability, operational state prediction in extreme environmental conditions (temperature), modelling of alike states (parametric, nonparametric), modelling of the material mechanical properties, modelling of states in virtual environment, reliability (R), maintainability (M) and supportability (S) modelling, simulations of boundary operational states, experimental techniques. In recent research of the programme group the topics where basic knowledge has to be broadened have been defined:
- operating states and their scatter modelling by applying mixture probability functions;
- modelling of the random loads and operational states by neural networks;
- durability modelling at variable and complex operating conditions and material properties;
- modelling of the target operating properties on the basis of the starting material and technological values;
- research of the domain of usability of the RMS values in the development procedures;
- development of methods for service life prediction of low and high cycle loaded products operating at variable and high temperatures;
- effectiveness of experimental techniques in development procedures;
- development reliability and maintainability prediction of complex and assembled products;
- research of production procedures and their influence upon the development solutions of products and technologies (wood machines, transport devices);
- research of dynamic phenomena on machines (transport devices, wood machines) on product quality or production technology;
- research of mechanic properties and development solutions of designs with new materials.
The aims of the connected research work within the programme group and in connection with other programme groups are as follows:
- to supplement the basic knowledge in the field of the development prediction in such a way that it will be possible to assemble and to introduce the improved development technology in the working organisations;
- to enable the efficiency and good competitive position of the working organisations by applying this knowledge in the key development process phases;
- to qualify the new engineers for leading positions and for engineering positions in the industry through undergraduate and postgraduate studies.
Significance for science
In the recent five years, the programme group has achieved 77 citations. In the period of the programme, thirty-four scientific articles with index SCI or SSCI and eight other scientific papers were published. Nine post-graduate students received their Master's and five their Doctor's Degree. The main achievements have been gained in the fields to follow: - development evaluation with the use of mixed loading state probability densities and the technology of simulations in virtual environment, - development evaluations for stochastic non-measurable loading state parameters and the technology of their simulation in virtual environment, - development durability prediction without the intermediate conclusions about the Wöhler curves, - theoretical and technological definitions of virtual environment where it is possible to simulate durability in the area of low- and high-cycle loading at extreme conditions, especially temperatures, - verifications of the models that can be used to predict dynamic conditions and consequences in various machine elements, and - visits of the programme group members as guest professors at foreign universities
Significance for the country
a) For sustainable socio-economic and cultural development Slovenia's socio-econonic progress depends primarily on how successful the producers of vehicles, machines, constructions etc. are. As finalist producers or suppliers, the producers further depend on the success of their development, which depends on their ability to predict the characteristics and features of a product in use at low costs, fast and correctly. The programme group develops knowledge as well. b) For technological development Undoubtedly, of the new technologies the most important one is the new development technology that is crucial for Slovenia's technological progress. The programme group has proved that its contribution to the rise of this tehchnology for industry has been decisive. Additionally, the programme group has linked the experts to cooperate and established the Centre of Development Evaluation called CRV as the centre of special know-how and technologies playing a crucial role in the new associations of the related industry (automotive clusters) as the scientific centre. This will be continued. c) For the reinforcement of national identity and the preservation of natural and cultural heritage By some development projects where the new approaches have been introduced by the programme group the cooperating industry partners have become recognisable internationally as specialists or development suppliers.
Most important scientific results
Final report,
complete report on dLib.si
Most important socioeconomically and culturally relevant results
Final report,
complete report on dLib.si
