Autor: Klasztorny, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental validation of the numerical model of a car impact on a road barrier
Autorzy:: Barnat, W.
Bogusz, P.
Dziewulski, P.
Gieleta, R.
Kiczko, A.
Klasztorny, A.
Klasztorny, M.
Niezgoda, T.
Ochelski, S.
Powiązania:: https://bibliotekanauki.pl/articles/245936.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: car - road barrier system
crash test
experimental examinations
numerical simulations
numerical model validation
Opis:: This analysis considers the problem related to the transport safety improvement by applying specialized energy absorbing elements. The advanced finite element method was used to solve this problem. The obtained results permit to estimate the practical usability of the proposed solution. In previous works of the examination team [1-5] a series of numerical analysis of the car -- road barrier dynamical system, directed to the elaboration of the numerical model methodology of an impact problem with the use of chosen CAE programs, was submitted. In this article experimental results of a Suzuki Swift car impact into a standard road barrier arę presented. Tests were carried out at the Automotive Industry Institute (PIMOT) in Warsaw, with the use of a test sample of the road barrier. Presented results of experimental tests serve to validation of a numerical model of the aforementioned system. For the safety sake the car's speed during the experimental examinations was limited to 50 km/h. Moreover, the vehicle hit perpendicularly a properly modified road barrier's sector. Experimental initial boundary and constructional conditions were modelled in numerical examinations. in which a commonlv available Suzuki Swift car model, http://www.ncac.gwu.edu, was used. Numerical analysis was carried out with the use of LS-DYNA system.
Źródło:: Journal of KONES; 2010, 17, 1; 17-27
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A rheological model of polymeric materials and identification of its parameters
Autorzy:: Klasztorny, M.
Wilczyński, A.
Witemberg-Perzyk, D.
Powiązania:: https://bibliotekanauki.pl/articles/280578.pdf
Data publikacji:: 2001
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: polymers
rheology
constitutive equations
combined numerical and experimental methods
Opis:: A new rheological model of polymeric materials has been proposed, based on experimental data concerning creep of tensile samples. A mechanical model of the material consists of four elements connected in series, formulated by Hooke, Wilczyński, Kelvin and Newton. Constitutive equations of rheology of the polymeric material have been formulated, both in uncoupled and coupled form, with the analitycal generating functions weel-fitting the experiments. A method for the identification of the elastic, viscoelastic and viscous material constans, based on the creep of the tensile samples, has been developed and computerised. The introductory experiments have been carried out on samples made of POLIMAL 109 polyester resin and the results of identification of the material constans have been given.
Model reologiczny materiałów polimerowych oraz identyfikacja jego parametrów. Zaproponowano nowy model reologiczny materiałów polimerowych, oznaczony symbolem H-W-K-N. Model machaniczny materiału składa się z czterech elementów połączonych szeregowo, sformułowanych przez Hooke'a, Wilczyńskiego, Kelvina i Newtona. Sformułowano równania konstytutywne reologii opisujące model H-W-K-N, w postaci niesprzężonej i sprzężonej, z funkcjami tworzącymi dobrze aproksymującymi eksperymentalne przebiegi pełzania. Opracowano metodę identyfikacji 14 stałych materiałowych, opisujących model H-W-K-N. Algorytm identyfikacji zaprogramowano w języku PASCAL. Podano wyniki identyfikacji stałych materiałowych żywicy polestrowej (POLIMAL 109), bazujące na pomiarach pełzania wzdłużnego i poprzecznego próbek przy rozciąganiu jednokierunkowym.
Źródło:: Journal of Theoretical and Applied Mechanics; 2001, 39, 1; 13-32
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Numerical Modelling and Experimental Verification of Glass-Polyester Mixed Laminate Beam Bending Test
Autorzy:: Bondyra, A.
Klasztorny, M.
Szurgott, P.
Gotowicki, P.
Powiązania:: https://bibliotekanauki.pl/articles/387011.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: zginanie belek
analiza numeryczna
MES (metoda elementów skończonych)
metoda elementów skończonych
weryfikacja doświadczalna
GRRP shells
beam bending test
FEM numerical modelling
experimental verification
Opis:: The subject undertaken in the study is a glass (fibre) – polyester (matrix) layered composite, of the mixed sequence, composed alternately of laminas reinforced with E-glass plain weave fabric (WR600) and E-glass mat (CSM450). The laminate is manufactured on Polimal 104 polyester matrix. The aim of the study is to determine the options/values of parameters for numerical modelling and simulation of static processes in shell structures made of glass-polyester composites undertaken, in MSC.Marc system, recommended in engineering calculations. The effective elastic and strength constants of homogeneous laminas have been determined experimentally according to the standard procedures. The bending test of composite beams has been conducted experimentally and simulated numerically. Numerical investigations have been focused on selection of options/values of the numerical modelling and simulation parameters. The experimental verification of numerical modelling of the bending test is positive in both the quasi-linear range and in the catastrophic – progressive failure zone.
Źródło:: Acta Mechanica et Automatica; 2012, 6, 3; 1-18
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical modelling and design of ALFC shield loaded by 20 MM FSP fragment
Autorzy:: Klasztorny, M.
Świerczewski, M.
Dziewulski, P.
Morka, A.
Powiązania:: https://bibliotekanauki.pl/articles/241865.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: light armoured vehicles
passive protection
IED
FSP
modelling
simulation
design
Opis:: The study develops numerical modelling and design of the ALFC shield loaded by the 20 mm 54 g FSP fragment moving at impact velocity of 1800 m/s (fragmentation simulation of IED devices), used to protect 5 mm-thick Armox 500T steel plate. The ALFC shield is composed of the ALF energy-absorbing subsystem and a 99.7% Al2O3 alumina ceramic layer. The ALF subsystem is designed to absorb blast wave impact energy induced by explosive materials up to 10 kg TNT. The ceramic layer is aimed at stopping FSP fragments. The 5 mm-thick Armox 500T steel plate reflects the body bottom segment of a light armoured vehicle. The main purpose of the study is to determine the minimum thickness of the ceramic layer at which the 5 mm-thick Armox 500T steel plate is fully protected from perforation. The ALF subsystem has the following layered structure: Al2024 aluminium alloy plate, SCACS hybrid laminate plate, ALPORAS aluminium foam, SCACS hybrid laminate plate. The layers are joined with Soudaseal 2K chemoset glue. SCACS hybrid laminate contains the following components: VE 11-M modified vinylester resin (matrix), SWR800 glass S plain weave fabric, Tenax HTA40 6K carbon plain weave fabric, Kevlar 49 T 968 aramid plain weave fabric. The total thickness of the ALF shield amounts to 76 mm. In the numerical modelling, the aluminium alloy plate and Armox 500T steel plate are working in the elasto-plastic range according to Johnson–Cook model. The 99.7% Al2O3 alumina ceramic is working in elasto--hort range according to JH-2 Johnson-Holmquist model. The simulations correspond to large displacements, large deformations and contact among all the components of the system. In FE mesh, the 8-node 24 DOF hexahedral finite elements with single integration point have been used. Additional failure criteria governing ad-hoc erosion of finite elements have been applied. The FEM modelling, simulation and postprocessing have been carried out using Catia, HyperMesh, LS-DYNA and LS-PrePost systems. The simulation results are presented in the form of displacement - perforation contours and the FSP final deformation for both the FSP–shield-plate and the FSP-plate systems. It has been pointed out that 18 mm-thick ceramic layer protects the LAV body bottom plate from perforation.
Źródło:: Journal of KONES; 2012, 19, 4; 301-313
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Modelling and numerical simulation of the protectiye shield - protected plate - test stand system under blast shock wave
Autorzy:: Klasztorny, M.
Dziewulski, P.
Niezgoda, T.
Morka, A.
Powiązania:: https://bibliotekanauki.pl/articles/242616.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: light armoured vehicle
protective shield
aluminium-hybrid laminate-foam shield
blast shock wave
modelling and simulation
Opis:: The study presents FE modelling and simulation of a system for range testing of protective shields for light armoured vehicles. The protective shield designed by Authors is used against HE mines and IEDs up to 10 kg TNT. The system consists of the multiple-use portable rangę stand, a protected Armox 500T steel plate and a protective shield. The shield has a multi-layer structure and has the following main layers: PA11 aluminum, SCACS hybrid laminate, ALPORAS aluminum foam, SCACS hybrid laminate, connected together using SOUDASEAL chemo-set glue. The HE spherical charge is suspended centrally at 400 mm distance from the top surface of the stand. Overall dimensions of the test stand are approximately 800x800x180 mm, the protected piąte has dimensions 650x650x5 mm, and the protective shield is of 450x450x76 mm dimensions. The system is supported by an additional steel plate stiffening the subsoil. FE modelling, numerical simulations and processing the results were performed for the system under blast shock wave using the following CAE systems: CATIA, HyperMesh, LS-Dyna, and LS-PrePost. The 8-nodes brick finite elements were used, taking into account friction and contact phenomena. Isotropic and orthotropic material models and advanced nonlinear equations-of-state for some parts of the system were chosen, with relevant failure and erosion criteria, including the Johnson — Cook model for Armox 500T steel and PA11 aluminum and the MAT 161 model for plies of hybrid laminates. The shock wave was modelled approximately using the LOAD BLAST ENHANCED option available in LS-Dyna Version 971 R4 Beta code. Numerical simulations were performed for 2 kg TNT.
Źródło:: Journal of KONES; 2010, 17, 3; 197-204
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Experimental-numerical analysis of steel - foam energy - absorbing panels for road barriers modernization
Autorzy:: Niezgoda, T.
Ochelski, S.
Klasztorny, M.
Barnat, W.
Kiczko, A.
Dziewulski, P.
Powiązania:: https://bibliotekanauki.pl/articles/246007.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: numerical simulations
road transport
road barriers
passive safety
Opis:: The works on steel -foam energy-absorbing structures for the road barrier W-beam guardrail were carried out because of the necessity of increasing the passive safety of road barriers [1-5]. A road barrier guardrail is made of steel sections. These types of sections are characterized by good strain properties, although their energy-absorbing abilities and possibilities for "softer" vehicle impact energy are unsatisfactory. In order to increase energy-absorption on the road barrier guardrail additional tin-foam sections were used. Experimental tests on the modifled road barrier guardrail were carried out on a testing machine INSTRON at the Faculty of Mechanics and Applied Informatics of the Military Academy of Technology. Two meters long W-beam guardrail was investigated in a three point bending test, perpendicularly and under the angle of 20°. As a result of the experimental research diagrams of dependence of bending force on displacement were obtained. On the basis of aforementioned diagrams the energy that was absorbed by individual road barrier elements: tin coating, foam insert and steel guardrail, was estimated. Obtained results of the experimental research were also compared with the results of the numerical simulation of the finite elements method in LS-DYNA system.
Źródło:: Journal of KONES; 2010, 17, 1; 309-315
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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