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Papers by Marian Klasztorny
Budownictwo i Architektura
A theory of the quasi-exact physical and mathematical modelling of the composite (steel–concrete)... more A theory of the quasi-exact physical and mathematical modelling of the composite (steel–concrete) bridge / ballasted track structure / high-speed train system (BTT) was developed, including viscoelastic suspensions of rail-vehicles on two-axle bogies, the non-linear Hertz contact stiffness and one-sided contact between the wheel sets and the rails, the viscoelastic and inertia features of the bridge, the viscoelastic track structure on and beyond the bridge, the approach slabs, and random track irregularities. Based on this theory, advanced computer algorithms for the BTT numerical modelling were written and a computer program to simulate the vertical vibrations of the BTT systems was developed. The bridge subject to the preliminary dynamic analysis and designed according to Polish standards has a 15.00 m span length. The bridge was loaded by the German ICE-3 high-speed train moving at the critical (180 and 270 km/h) and the maximum (300 km/h) operating speeds.
Budownictwo i Architektura
The paper presents experimental study of sandwich composite used for an innovative foot-and-cycle... more The paper presents experimental study of sandwich composite used for an innovative foot-and-cycle bridge. The footbridge has a U-shaped shell structure made of sandwich consisting GFRP laminate covers and foam PET core. The bridge is manufactured using the infusion technology. Results of one and two directional tension tests of the laminates, compression tests of PET foam samples and 3-point as well as 4-point bending tests of sandwich beams are presented.
Journal of Civil Engineering, Environment and Architecture
The study concerns a selected road safety barrier consisting of a B-type guiderail, Sigma-100 pos... more The study concerns a selected road safety barrier consisting of a B-type guiderail, Sigma-100 posts with 2.00 m spacing, and supporting elements of a trapezoid cross section, located between the posts and the guiderail. The barrier is formed on a horizontal concave arc having a radius of 150 m. The full-scale experimental TB32 crash test was carried out for a vehicle impacting at the angle of 20°, on the testing grounds of the Automotive Industry Institute, Warsaw, Poland. The numerical modelling and simulation methodology of a barrier-vehicle system, recently developed by the authors is applied. Simulation of the above test was performed using LS-Dyna v.971 finite element code, while maintaining the conditions of the experimental test. All the functionality parameters for the barrier are studied, among others, ASI, THIV, working width, vehicle motion trajectory in the exit box. The results of the simulation tests were compared with those of the full-scale experimental test. The experimental verification of the numerical modelling and simulation of the selected crash test is rated positively. It was proven, both numerically and experimentally, that the TB32 crash test does not meet the condition imposed on the vehicle motion trajectory in the exit box.
The Baltic Journal of Road and Bridge Engineering
The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account ... more The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account in simulation of crash tests on road safety barriers located on horizontal concave arcs with small radii (20−200 m). In this work, the numerical modelling and simulations of TB11, TB32 crash tests for selected road safety barriers on a horizontal concave arc with a small radius of 150 m, at a reliable and increased speed of a vehicle, were conducted. The authors developed the methodology of numerical modelling and simulation and published in the period 2015−2018. In this study, crash tests include two N2 class steel road barriers with the B-type guide rail, i.e. SP-05/1 (with 1.00 m post spacing) and SP-05/2 (with 2.00 m post spacing). Suzuki Swift and Dodge Neon vehicle models were taken from the National Crash Analysis Center (USA) library and modified, respectively. It was proved that road traffic safety on horizontal concave arcs with small radii is assured if the reliable velocity i...
Bulletin of the Polish Academy of Sciences: Technical Sciences
The paper presents numerical analyses aimed at preliminary assessment of the protective panel eff... more The paper presents numerical analyses aimed at preliminary assessment of the protective panel effectiveness, which task is to protect the elements of building structures against explosion. For the criterion of assessing the effectiveness of the panel the load capacity of the column made of steel I-beam was chosen. Ultimate force was determined by using advanced computational procedure, which consisted of four stages: preload, blast simulation, dynamic response and static analysis of deformed structure. Blast load was simulated using Lagrangian- Eulerian domain coupling. Results indicated that the application of the protective panel significantly reduces the plastic deformation of the structure.
International Journal of Crashworthiness
Archives of Civil and Mechanical Engineering
Journal of Engineered Fibers and Fabrics
Experimental dynamic tests for energy absorption by four selected auxetic fabrics were conducted ... more Experimental dynamic tests for energy absorption by four selected auxetic fabrics were conducted and analyzed. An original test stand was designed, manufactured and attached to a Hopkinson's bar. The energy absorbed by an auxetic curtain was expressed in terms of the energy of the maximum elastic deformation of a unit volume along the support line of the witness-plate. A quasi-impulse load was induced using a gas blast under a pressure corresponding to an indoors deflagration explosion of a propane-air mixture in a vented room. The auxetic fabric with the best energy-absorption properties was identified on the basis of the comparative analysis using a reference system with a steel specimen.
Structural Engineering and Mechanics
Transient and quasi-steady-state vertical vibrations of a multi-span beam steel bridge located on... more Transient and quasi-steady-state vertical vibrations of a multi-span beam steel bridge located on a single-track railway line are considered, induced by a superfast passenger train, moving at speed 120-360 km/h. Matrix dynamic equations of motion of a simplified ...
Mechanik
Presented is a new design-technological solution of a side safety device for Wielton trucks. A si... more Presented is a new design-technological solution of a side safety device for Wielton trucks. A side safety device is manufactured of glass-polyester laminates and foam using press technology. Numerical modelling in MSC.Marc system and experimental verification tests were conducted according to Regulations no. 73. A good qualitative and quantitative compatibility of the results, were obtained.
Journal of Civil Engineering and Architecture
Random vertical track irregularities are one of essential vibration sources in bridge, track stru... more Random vertical track irregularities are one of essential vibration sources in bridge, track structure and high-speed train systems. The common model of such irregularities is a stationary and ergodic Gaussian process. The study presents the results of numerical dynamic analysis of advanced virtual models of composite BTT (bridge/ballasted track structure/high-speed train) systems. The analysis has been conducted for a series of types of single-span simply-supported railway composite (steel-concrete) bridges, with a symmetric platform, located on lines with ballasted track structure adapted for high-speed trains. The bridges are designed according to Polish bridge standards. A new methodology of numerical modeling and simulation of dynamic processes in BTT systems has been applied. The methodology takes into consideration viscoelastic suspensions of rail-vehicles, nonlinear Hertz wheel-rail contact stiffness and one-side wheel-rail contact, physically nonlinear elastic-damping properties of the track structure, random vertical track irregularities, approach slabs and other features. Computer algorithms of FE (finite element) modeling and simulation were programmed in Delphi. Both static and dynamic numerical investigations of the bridges forming the series of types have been carried out. It has been proved that in the case of common structural solutions of bridges and ballasted track structures, it is necessary to put certain limitations on operating speeds, macadam ballast and vertical track roughness.
Roads and Bridges Drogi I Mosty, 2003
ABSTRACT The object of analysis was an I-beam steel structure subjected to pressure waves generat... more ABSTRACT The object of analysis was an I-beam steel structure subjected to pressure waves generated by TNT charge detonation. This column represents the supporting structure used in many critical facilities exposed to possible terrorist attacks. The computational methods were used to study the influence of explosive shape and its FE representation. Coupled analyses between Lagrangian formulation (solid material) and Eulerian formulation (gas medium) were performed. Two explosives were considered - with cubical and cylindrical shape. The cylindrical explosive model was developed in two versions - simplified and with a fine mesh. The experimental validation test was also performed to confirm the performed numerical calculations. The obtained results show a very high influence of the high explosives shape on the level of a pillar destruction. It was also proved that an inaccurate shape representation results in an underestimation of destruction level.
Budownictwo i Architektura
A theory of the quasi-exact physical and mathematical modelling of the composite (steel–concrete)... more A theory of the quasi-exact physical and mathematical modelling of the composite (steel–concrete) bridge / ballasted track structure / high-speed train system (BTT) was developed, including viscoelastic suspensions of rail-vehicles on two-axle bogies, the non-linear Hertz contact stiffness and one-sided contact between the wheel sets and the rails, the viscoelastic and inertia features of the bridge, the viscoelastic track structure on and beyond the bridge, the approach slabs, and random track irregularities. Based on this theory, advanced computer algorithms for the BTT numerical modelling were written and a computer program to simulate the vertical vibrations of the BTT systems was developed. The bridge subject to the preliminary dynamic analysis and designed according to Polish standards has a 15.00 m span length. The bridge was loaded by the German ICE-3 high-speed train moving at the critical (180 and 270 km/h) and the maximum (300 km/h) operating speeds.
Budownictwo i Architektura
The paper presents experimental study of sandwich composite used for an innovative foot-and-cycle... more The paper presents experimental study of sandwich composite used for an innovative foot-and-cycle bridge. The footbridge has a U-shaped shell structure made of sandwich consisting GFRP laminate covers and foam PET core. The bridge is manufactured using the infusion technology. Results of one and two directional tension tests of the laminates, compression tests of PET foam samples and 3-point as well as 4-point bending tests of sandwich beams are presented.
Journal of Civil Engineering, Environment and Architecture
The study concerns a selected road safety barrier consisting of a B-type guiderail, Sigma-100 pos... more The study concerns a selected road safety barrier consisting of a B-type guiderail, Sigma-100 posts with 2.00 m spacing, and supporting elements of a trapezoid cross section, located between the posts and the guiderail. The barrier is formed on a horizontal concave arc having a radius of 150 m. The full-scale experimental TB32 crash test was carried out for a vehicle impacting at the angle of 20°, on the testing grounds of the Automotive Industry Institute, Warsaw, Poland. The numerical modelling and simulation methodology of a barrier-vehicle system, recently developed by the authors is applied. Simulation of the above test was performed using LS-Dyna v.971 finite element code, while maintaining the conditions of the experimental test. All the functionality parameters for the barrier are studied, among others, ASI, THIV, working width, vehicle motion trajectory in the exit box. The results of the simulation tests were compared with those of the full-scale experimental test. The experimental verification of the numerical modelling and simulation of the selected crash test is rated positively. It was proven, both numerically and experimentally, that the TB32 crash test does not meet the condition imposed on the vehicle motion trajectory in the exit box.
The Baltic Journal of Road and Bridge Engineering
The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account ... more The reliable speed of a vehicle, assigned to a given road arc, is not usually taken into account in simulation of crash tests on road safety barriers located on horizontal concave arcs with small radii (20−200 m). In this work, the numerical modelling and simulations of TB11, TB32 crash tests for selected road safety barriers on a horizontal concave arc with a small radius of 150 m, at a reliable and increased speed of a vehicle, were conducted. The authors developed the methodology of numerical modelling and simulation and published in the period 2015−2018. In this study, crash tests include two N2 class steel road barriers with the B-type guide rail, i.e. SP-05/1 (with 1.00 m post spacing) and SP-05/2 (with 2.00 m post spacing). Suzuki Swift and Dodge Neon vehicle models were taken from the National Crash Analysis Center (USA) library and modified, respectively. It was proved that road traffic safety on horizontal concave arcs with small radii is assured if the reliable velocity i...
Bulletin of the Polish Academy of Sciences: Technical Sciences
The paper presents numerical analyses aimed at preliminary assessment of the protective panel eff... more The paper presents numerical analyses aimed at preliminary assessment of the protective panel effectiveness, which task is to protect the elements of building structures against explosion. For the criterion of assessing the effectiveness of the panel the load capacity of the column made of steel I-beam was chosen. Ultimate force was determined by using advanced computational procedure, which consisted of four stages: preload, blast simulation, dynamic response and static analysis of deformed structure. Blast load was simulated using Lagrangian- Eulerian domain coupling. Results indicated that the application of the protective panel significantly reduces the plastic deformation of the structure.
International Journal of Crashworthiness
Archives of Civil and Mechanical Engineering
Journal of Engineered Fibers and Fabrics
Experimental dynamic tests for energy absorption by four selected auxetic fabrics were conducted ... more Experimental dynamic tests for energy absorption by four selected auxetic fabrics were conducted and analyzed. An original test stand was designed, manufactured and attached to a Hopkinson's bar. The energy absorbed by an auxetic curtain was expressed in terms of the energy of the maximum elastic deformation of a unit volume along the support line of the witness-plate. A quasi-impulse load was induced using a gas blast under a pressure corresponding to an indoors deflagration explosion of a propane-air mixture in a vented room. The auxetic fabric with the best energy-absorption properties was identified on the basis of the comparative analysis using a reference system with a steel specimen.
Structural Engineering and Mechanics
Transient and quasi-steady-state vertical vibrations of a multi-span beam steel bridge located on... more Transient and quasi-steady-state vertical vibrations of a multi-span beam steel bridge located on a single-track railway line are considered, induced by a superfast passenger train, moving at speed 120-360 km/h. Matrix dynamic equations of motion of a simplified ...
Mechanik
Presented is a new design-technological solution of a side safety device for Wielton trucks. A si... more Presented is a new design-technological solution of a side safety device for Wielton trucks. A side safety device is manufactured of glass-polyester laminates and foam using press technology. Numerical modelling in MSC.Marc system and experimental verification tests were conducted according to Regulations no. 73. A good qualitative and quantitative compatibility of the results, were obtained.
Journal of Civil Engineering and Architecture
Random vertical track irregularities are one of essential vibration sources in bridge, track stru... more Random vertical track irregularities are one of essential vibration sources in bridge, track structure and high-speed train systems. The common model of such irregularities is a stationary and ergodic Gaussian process. The study presents the results of numerical dynamic analysis of advanced virtual models of composite BTT (bridge/ballasted track structure/high-speed train) systems. The analysis has been conducted for a series of types of single-span simply-supported railway composite (steel-concrete) bridges, with a symmetric platform, located on lines with ballasted track structure adapted for high-speed trains. The bridges are designed according to Polish bridge standards. A new methodology of numerical modeling and simulation of dynamic processes in BTT systems has been applied. The methodology takes into consideration viscoelastic suspensions of rail-vehicles, nonlinear Hertz wheel-rail contact stiffness and one-side wheel-rail contact, physically nonlinear elastic-damping properties of the track structure, random vertical track irregularities, approach slabs and other features. Computer algorithms of FE (finite element) modeling and simulation were programmed in Delphi. Both static and dynamic numerical investigations of the bridges forming the series of types have been carried out. It has been proved that in the case of common structural solutions of bridges and ballasted track structures, it is necessary to put certain limitations on operating speeds, macadam ballast and vertical track roughness.
Roads and Bridges Drogi I Mosty, 2003
ABSTRACT The object of analysis was an I-beam steel structure subjected to pressure waves generat... more ABSTRACT The object of analysis was an I-beam steel structure subjected to pressure waves generated by TNT charge detonation. This column represents the supporting structure used in many critical facilities exposed to possible terrorist attacks. The computational methods were used to study the influence of explosive shape and its FE representation. Coupled analyses between Lagrangian formulation (solid material) and Eulerian formulation (gas medium) were performed. Two explosives were considered - with cubical and cylindrical shape. The cylindrical explosive model was developed in two versions - simplified and with a fine mesh. The experimental validation test was also performed to confirm the performed numerical calculations. The obtained results show a very high influence of the high explosives shape on the level of a pillar destruction. It was also proved that an inaccurate shape representation results in an underestimation of destruction level.