Abstract A special wagon, presented in the paper, can be used for intermodal transport of various types vehicles. It enables vehicles 36 tons mass and height 4m on GB1 clearance height. An innovative wagon is equipped with a frame-support marginal parts mounted standard biaxial bogies central part lowered rotatable loading platform. The rotating acts as kind platform, allowing truck to move through it during load/unload. During railway operation, this platform become an integrated wagon;...

Abstract The paper presents research on optimization of two-layer armour subjected to the normal impact 7.62x54 B32 piercing (AP) projectile. There were analysed two cases in which alumina Al 2 O 3 was supported by aluminium alloy AA2024-T3 or steel Armox 500T. thicknesses layers determined minimize panel areal density whilst satisfying constraint, maximum projectile velocity after perforation. problem solved through utilization LS-DYNA, LS-OPT and HyperMorph engineering software....

Abstract This paper presents a numerical study of multilayer composite panel impacted by an AP (Armor Piercing) 14.5×114 mm B32 projectile. The consists alternating layers hard ceramic and ductile aluminum alloy. While the alloy layer typical plate, ceramics confront projectiles in form pyramids. studied models are compared with reference structure, which is standard double panel. problem has been solved usage modeling simulation methods as well finite elements method implemented LS-DYNA...

The paper presented shows a part of investigations covering the contact problem in numerical modelling using an explicit code. authors have outlined parameters and factors that direct impact on proper definition, which, as is known, has much importance finite element analyses. For purpose study, test model was proposed, where interaction between net chosen 3D object with relatively small geometric dimensions low weight simulated. Additionally several structures were analysed which their...

Abstract The main goal of this numerical and experimental study composite armour systems was to investigate their ballistic behaviour. Numerical simulations were employed determine the initial dimensions panel layers before actual test. In order achieve aim, multivariate computations with different thicknesses conducted. calculations performed finite element method in LS-DYNA software, which is a commonly used tool for solving problems associated shock wave propagation, blasts impacts. An...

Numerical analysis of selected type the polyurethane rail pad is presented in paper. A shaped with cylindrical-shaped elements its working section was as a representative for computational simulation. Analysis reflected experimental test according to valid standard. The included loading vertical force perpendicular foot rail. Such allows determining static stiffness pad. Mooney – Rivlin material model current study. Necessary tests including uniaxial compression and tension were conducted...

Introduction: A retrospective study was performed to compare the results of dismembered and nondismembered Y-V laparoscopic pyeloplasties complications observed after two types surgery. Materials Methods: Eighty-eight patients with ureteropelvic junction obstruction (UPJO) underwent a operation. In 2 cases, an open conversion made. Hynes-Anderson pyeloplasty (LH-AP) on 50 patients, whereas (LY-VP) in 36 cases. The diagnosis UPJO based complete medical history, ultrasonography, diuretic...

This paper presents the development process of a numerical model for terrain vehicle suspension system. Geometry tire and other elements were achieved using reverse engineering technology. In next step, analyses system subjected to blast wave carried out with two different techniques, e.g. SPH (Smoothed Particle Hydrodynamics) method Conwep model.

Abstract The possibility of using CO2 to fracturing a shale rock has been presented in the paper. described innovative method which allows for efficient extraction gas and carbon dioxide storage was developed Department Mechanics Applied Computer Science at Military University Technology, Warsaw, Poland. Firstly, verified on base analytical experimental research. In next stage verification thermodynamic behavior studied. growth pressure drop heated closed volume numerically tested. research...

Nowadays, transportation becomes a significant source, apart from factories and power plants, of air pollution. Therefore, due to legal restrictions on the emission noxious gases, other sources for vehicles are necessary. Some these allow replacement internal combustion engine completely, whereas ones only support operation. Hence, hybrid powertrain – alternative drivetrain equipped with an is increasingly being used. The was mostly applied in cars buses but recently it has been also used...

Energy absorbing composite elements, which can be used for the protection of people, vehicles and structures, have been widely investigated in recent years.Different kinds materials (metals, composites, foams) structures investigated.Many articles present glass, carbon aramid composites investigation results.The sleeve conical are described.The impact energy these elements is absorbed during progressive fracture process.Glass very popular due to their low cost.This paper deals with numerical...

During the operation of UN and NATO forces in Africa Asia it appeared that equipment held utilized by these organizations was not proof against missiles being shot rocket propelled grenades.The terrorist belong to first generation.They have a head with shaped charge jet permitting them pierce up 300 mm RHA steel.There are four protection methods this hazard: reactive armour, thick proper rod armour active defence system.The cannot be applied on each kind vehicle.The thick, limits other...

Abstract As a result of an explosion under military vehicle, the risk threat to life and health crew increases. Examination this event in terms security soldiers comes down complex analysis mutual interaction body soldier, seating structural elements vehicle. result, shock wave impacts can cause tremor resulting from construction vehicle acceleration passenger's body. This study attempts analyze impact improvised explosive device (IED) with cervical spine injuries soldiers. The was carried...