Projects / Programmes
January 1, 2019
- December 31, 2027
| Code |
Science |
Field |
Subfield |
| 2.05.00 |
Engineering sciences and technologies |
Mechanics |
|
| Code |
Science |
Field |
| T210 |
Technological sciences |
Mechanical engineering, hydraulics, vacuum technology, vibration and acoustic engineering |
| Code |
Science |
Field |
| 2.03 |
Engineering and Technology |
Mechanical engineering |
Vibrational fatigue, structural dynamics, substructuring methods, optical methods, high-speed camera, constitutive modelling, inverse identification, elastoplasticity, elastic multipole method; fluid-solid interaction; vertical take-off and landing (VTOL), visual anchoring.
Data for the last 5 years (citations for the last 10 years) on
April 25, 2024;
A3 for period
2018-2022
| Database |
Linked records |
Citations |
Pure citations |
Average pure citations |
| WoS |
433 |
19,293 |
18,529 |
42.79 |
| Scopus |
478 |
22,544 |
21,690 |
45.38 |
Researchers (38)
Organisations (1)
Abstract
Laboratory for Dynamics of Machines and Structures
Dynamically excitation of products results in vibration fatigue, which can lead to product failure. In recent years, the field of vibration fatigue has seen significant progress in the field of multi-axis, non-stationary and non-Gaussian loads. The synthesis of vibration fatigue with the theory of structural dynamics opened up new research opportunities. The program group thus sees research opportunities in the field of further development in the field of non-stationary loadings, vibrational fatigue of composite materials and further synthesis of the principles of vibrational fatigue with the theory of structural dynamics.
Optical methods based on high-speed cameras have, in the last 3-5 years, significantly developed. While the research programme group was part of this development, we see further research opportunities in the field of 3D vibration & shape reconstruction. We see research opportunities where a single high-speed camera could be used for a complete 3D shape and vibration reconstruction of the measured sample. Further, we plan to further develop the recently presented the spectral optical imaging approach to measure spectral component of an oscillating structure.
Although the experimental dynamics substructuring methods are well established their applicability is limited to simple laboratory case studies. Therefore a major scientific breakthrough will be the presented hybrid-substructuring method that would combine efficiency and robustness of the numerical dynamic substructuring methods and the real-system properties through the experimental methods.
Laboratory for Numerical Modelling and Simulation
For advanced constitutive models that describe the mechanical behavior of materials, the unique determination of their parameters is difficult. The main objective of the research is to develop the technique of parameter determination using the inverse identification method based on the strain full field measurements. Research includes the theoretical development of the method, the development of constitutive models, their implementation in a computer program based on the Finite Elements Method via user material subroutine, and the use of results in simulations of technological processes. The aim is to create a new numerical strategy where the full-field data will be used more effectively, what will enable to model the mechanical behavior of a variety of materials.
Laboratory of Non-Linear Mechanics
We will develop a new method for calculating the stress-strain state in 2D solid elastic structures with circular holes and inclusions. This method will employ some similarities between electrostatics and 2D linear elasticity (elastic point charges, elastic dipoles and quadrupoles).
Laboratory for Aeronautics
We will work on: (1) development of vertical take-off and landing vehicle for fast transport on short distances in cities of the future. (2) We will continue developing Visual anchoring system as redundant system for unmanned aerial vehicles in GPS denied environment.
Significance for science
Laboratory for Dynamics of Machines and Structures
Structural dynamics is in active developed, especially in the fields of vibration fatigue and high-speed image based modal analysis. With regards to vibration fatigue research, the planed scientific progress in in the field of non-stationary loads and vibration fatigue of composite materials will be important for future lightweight structures. The scientific advances in vibration fatigue research will be further incorporated into the theory of structural dynamics.
In the field of optical methods for experimental modal analysis we are planning to present the scientific contribution for full reconstruction of the three-dimensional vibrational field, as well as the full reconstruction of the three-dimensional shape; all using a single high-speed camera. The recently introduced optical spectral imaging approach will be improved and it is expected that partially replace the need for high-speed cameras in vibration research.
In the field of substructering the researched hybrid-substructuring method which combines efficiency and robustness of the numerical dynamic substructuring methods and the real-system properties through the experimental methods, present a major scientific breakthrough.
Laboratory for Numerical Modelling and Simulation
Research relates to the field of the mechanical behavior of materials by means of constitutive models. An important part of the constitutive modeling is also the determination of the parameters of the constitutive models. In order to determine the parameters more precisely, we intend to use the inverse identification method using the data of the strain full field measurements. Since the amount of data obtained from the experiments for measuring the entire strain field is significantly larger than the classic experiments, the unique determination of the parameters is much more demanding. In addition, advanced models are more complex and include several parameters, which by definition increase the dimension of optimization hyper space. We want to create a new numerical strategy where the full field data will be used more effectively in the inverse identification of the parameters of the constitutive models.
In scientific sense, research has a potential impact on the development of methods of inverse identification of parameters from a large number of data, and the development of non-standard specimens for the purpose of better identification of the parameters of constitutive models. In the applicative sense, however, the developed technique enables the inclusion of new influences in the description of a mechanical state evolution in a deformable body, what presents an important possibility of improving the quality of numerical simulations of technological processes in the future.
Laboratory of Non-Linear Mechanics
We will develop a new method for calculating the stress-strain state in 2D solid elastic structures with circular holes and inclusions. In this method we will take advantage of some similarities between electrostatics and 2D linear elasticity. Electrostatics problems can be formulated in terms of a scalar field, electric potential, whose gradient is the electric field. Similarly, in 2D elasticity a scalar field, named Airy stress function, can be defined such that its spatial derivatives represent stresses in the material.
Due to the chaotic nature of the turbulent flow, the problem of active control of the turbulent boundary layer has not yet been completely solved. Controlling the development of the turbulent boundary layer enables the delay of the separation and consequently reduce the drag forces. For non-aerodynamic forms, active microstructure of the body surfaces prevents the formation of an intense Karman vortex shedding and the additional dynamic load on the structure.
Laboratory for Aeronautics
Ensuring mobility while increasing traffic on existing transport infrastructure with innovative solutions is an area with a high ne
Significance for the country
Laboratory for Dynamics of Machines and Structures
The development in the field of vibration fatigue and optical methods for modal analysis are special scientific fields inside the scientific field of structural dynamics. With the research activities proposed with this programme, the basic knowledge of structural dynamics is also supported. Structural dynamics is one of the key disciplines that R & D personnel in the Slovenian industry requires to develop silent. The research activities are also increasing the potential to get EU funded projects.
Laboratory of Non-Linear Mechanics
Controlling the development of the turbulent boundary layer allows us to delay the separation and, consequently, reduce the drag forces. For airplanes, this means lower required power and propulsive forces. Such airplanes will have lower fuel consumption, greater range and less impact on the pollution of the environment. For structures that are influenced by fluid flow in air and water, there will be smaller areas of separation and drag forces.
The piping systems in which fluids of different temperatures are mixed experience more severe loading than in the case of constant temperature on the wall of the pipe. If the process is periodic, fatigue may occur, which leads to the formation of cracks in the wall of the tube and eventually to the leakage of the fluid. The problem is most acute in nuclear power plants, since the leakage of radioactive fluid can potentially lead to ecological disaster. With our analytical solution we will be able to determine the stress-deformation state in the wall of the tube and possible critical events much faster than by using FEM.
Laboratory for Aeronautics
Application of acquired knowledge in the Slovene company would bring global competitiveness, as VTOL vehicles are still in development for this use. This could generate high added value and create new jobs.
For companies in Slovenia engaged in the production of unmanned aerial vehicles, these methods could be an advantage over other competition and, consequently, increased demand.
A better transition to low carbon society would also contribute to a better use of renewable resources, which would be achieved through the use of a developed model.
Most important scientific results
Interim report
Most important socioeconomically and culturally relevant results
Interim report
