Temat: vibration propagation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of finite elements method in the design of road located in the densely built - up residential area
Autorzy:: Bednarz, J.
Brożek, G.
Targosz, J.
Powiązania:: https://bibliotekanauki.pl/articles/241753.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: finite elements method
propagation of vibration wave in the soil
road design
Opis:: Nowadays, many of the designed roads are located through the densely built-up residential areas, and even the areas where there are historic buildings. Therefore, already at the stage of preliminary road design one should take into account the effects of vibration wave propagation caused by movement of vehicles on buildings located in the immediate vicinity of designed road. One of the methods that can be used to determine the dynamic effects of designed road for residential buildings is the finite element method. This paper presents an application of the finite element method for the estimation of the dynamic interaction of designed road located in the centre of a major city in the nearby residential buildings. Finite element method was used to model the land and buildings located near the designed road. In the process of land modelling the geological studies of ground and measurements of soil vibrations caused by the vibratory road roller rides conducted by the authors were used. Thus, it was possible to tune the developed finite element model. Proposed in this paper method of analysis of ground vibrations reduce the time needed to design a vibration isolating elements that will protect people and buildings from the destructive effects of vibration caused by vehicles movement the designed road. The work was carried out in a research project 4875/B/TO2/2010/38 financed by Ministry of Science and Higher Education.
Źródło:: Journal of KONES; 2012, 19, 4; 21-31
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Experimental verification of the developed soil model describing the propagation of vibration wave in the ground
Autorzy:: Bednarz, J.
Powiązania:: https://bibliotekanauki.pl/articles/246492.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: finite element method
propagation of vibration wave in the soil
Drucker-Prager material model
Opis:: The problem of propagation of vibration waves in soil caused by passing trains and vehicles is an important issue for the assessment of their influence on environmental impacts and engineering structures such as bridges, viaducts, historic architecture and residential buildings. The issue is complex because the nature of the soil is heterogeneous and the groundwater level changing depending on the season and this creates great difficulties in developing a theoretical model of vibration wave propagation. The paper presents developed numerical model of soil consisting of 4.3 million cubic finite elements based on the geological properties of soil. Developed model based on Drucker- Prager material model, which is often used in numerical methods for simulating the behaviour of different soil types. In addition, the material properties of the soil was specially prepared and allowed to use them directly in the material model used. Both concrete (building) and steel (plate forcing) were modelled using an isotropic material model. Element size was set at 300 mm. This value was determined by the adopted frequency range studied (0 to 100 Hz) and due to verification by simulation results of experimental studies in which excitation has been implemented in the frequency of 33 Hz (base frequency of excitation signal) and 66 Hz (second harmonic of excitation signal). The cut-off frequency 100 Hz defines a minimum wavelength propagated in the soil (based on the stiffness and density of the soil) and 10 finite elements was adopted at a wavelength, which is 3 meters to the ground, for the correct mapping of a sinusoidal waveform. Subsequently, experimental studies were performed to verify the model from which the conclusions are presented in the work. The work was carried out in a research project 4875/B/TO2/2010/38 financed by Ministry of Science and Higher Education.
Źródło:: Journal of KONES; 2012, 19, 3; 31-39
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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