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Computer Methods in Materials Science
2013 Vol. 13, No. 3 402--406
PL Ciągły wzrost popytu na miniaturowe części, takie jak na przykład: mikrośruby, mikronarzędzia, czy mikroimplanty - stosowane w inżynierii biomedycznej, powoduje szybki rozwój metod mikroformowania z zastosowaniem obróbki plastycznej. W przeciwieństwie do tradycyjnych zastosowań produkcyjnych, proces[...]
EN In contrast to traditional manufacturing applications, small-scale manufacturing processes usually require sophisticated equipment which is generally associated with high costs and low productivity. Current trends suggest manufacturing metallic parts by ‘microforming’. Microforming is a well suited [...]
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Computer Methods in Materials Science
PL Żywice epoksydowe zawierające napełniacze mineralne, takie jak tlenek glinu czy krzemionka, są chętnie stosowane jako materiały izolacyjne w produktach przemysłu energetycznego. Materiały te oferują dobre właściwości dielektryczne, termiczne oraz mechaniczne, są stosunkowo łatwe w obróbce, a jednocz[...]
EN Epoxy resins filled with mineral particles, such as silica and alumina, are well known and extensively used as insulating materials in power product applications. They are relatively cheap and easy to process, and their dielectric, thermal and mechanical properties are appropriate to maintain their [...]
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Prace Naukowe Politechniki Warszawskiej. Mechanika
2009 z. 229 97-113
PL W pracy przedstawiono wyniki modelowania MES procesu konwencjonalnego zgrzewania tarciowego. Przeprowadzona analiza obejmowała formownie pól temperatur z uwzględnieniem odkształcenia plastycznego. Modelowano złącza jedno- i różnoimienne w postaci prętów o średnicy 25-30 mm.
EN The paper presents the results of FEM modelling of conventional friction welding process. The conducted analysis covered the formation of temperature field with plastic deformation taken into account. The similiar and dissimiliar joints have been modeled in the from of rods with diameter from 25 to [...]
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Advances in Materials Science
EN A three dimensional (3D) model of biocomposite metal-surface coating system, which is influenced by known external forces, is proposed. This model consists of the metallic substrate (Ti6AI4V) and the hydroxyapatite (HA) coating. Using FEM (finite element method), strain-stress maps of model were gen[...]
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Technical Sciences / University of Warmia and Mazury in Olsztyn
2014 nr 17(2) 149--163
EN To improve fitting of numerical results to experimental data, in the past, distances between nodes were decreased for whole mesh. A typical mesh generator for Finite Element Method (FEM) analysis ensures possibility to decrease distances between nodes for edges or surfaces of described geometries. I[...]
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Foundations of Civil and Environmental Engineering
2010 No. 13 73--89
EN Soil is a material dependent on the load history. The load history has a significant influence on stress distribution in the ground beneath the footing and the settlement of a foundation. In the paper the load history has been considered as the sequence of loading the ground with two strip footings.[...]
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Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
2017 Nr 1 155--172
EN The installation of a machine gun on board a helicopter requires designing the rigid and durable frame for mounting a machine gun. Additionally there should be considered the limit to the weight of the structure, which forces the payload of a helicopter. The paper presents the overview of frames for[...]
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Engineering Transactions
EN This article presents the results of experimental research into beech wood shearing. The applied research methodology has made it possible to obtain average values of basic strength parameters of wood: ultimate strength, yield point and the Kirchhoff’s shear modulus. In order to investigate the phen[...]
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Acta Mechanica et Automatica
EN In this paper selected aspects of numerical modelling of bending pipes process are described. Elasto-plastic material model was used in COMSOL FEM environment. The results of numerical analyses of two kinds of steel were presented. The correctness of the proposed model was verified based on comparis[...]
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Archives of Metallurgy and Materials
EN This paper presents the research results of the balls rolling process according to the conventional and modified methods of rolling. Theoretical analysis was carried out by using numerical methods based on the Finite Element Method. The Simufact package version 10.0 were used for calculation. Simula[...]
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Journal of KONES
2017 Vol. 24, No. 3 309--316
EN Stress concentration is still present in the vicinities of structural notches in engineering structures. Zones with higher level of stress are particularly dangerous for structures subjected to fatigue or dynamic loads. The vessels with flat endplates with stress relief grooves are the common exampl[...]
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Journal of KONES
2016 Vol. 23, No. 4 513--520
EN The application of flat ends as closures in pressure boilers is a certain alternative for commonly used dished ends. However, it is inevitably joined with the stress concentration presence in the vicinity of the junction between the cylindrical pipe and the ending flat plate. The notch effect, which[...]
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Applied Computer Science
EN The work presents the original conception of thin-walled plate element with the cut-out of irregular shape for use as a elastic or bearer element. The influence of geometrical parameters and the shape of the cut-out on the value of the critical load of the structure was researched. To discrete model[...]
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Journal of KONES
EN Composites are a group of materials applied more extensively in aviation constructions. Their good physicalchemical and mechanical properties, and particularly from the ratio of strength to low density give a dominant place for applying in thin- walled constructions as a load carrying-capacity struc[...]
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Engineering Transactions
EN The aim of the work is personalized strength analysis using finite element method (FEM), carried out in the virtual hip joint supported by the hip resurfacing. The material for the procedure was the clinical case of patient, recommended to the resurfacing operation. The preoperative strength analysi[...]
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Acta Mechanica et Automatica
2017 Vol. 11, no. 4 317--321
EN The purpose of this research is unsatisfactory state of knowledge of the abrasive wear of composites with thermoplastic polymer as matrix material and reinforcing material in the form of short and focused carbon fibers that can be used in additive manufacturing technologies. The paper presents a con[...]
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Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
2017 Nr 4 272--282
EN The paper presents the measurements and the analysis of deformations between layers and the outside surface of a multilayer filament wound composite pipe. The pipe was made through the hoop wrap of roving stripes hence ring-shaped samples were prepared for test purposes. Carbon fibers and glass fibe[...]
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Archives of Metallurgy and Materials
EN Technological progress in construction of automotive vehicles, particularly in construction of engines, enforces simultaneous changes in foundry properties of aluminum alloys used in automotive industry. Until recently, abrasion resistance was the main usability criterion of a material used for pist[...]
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Zeszyty Naukowe. Mechanika / Politechnika Opolska
2013 z. 102 57-58
EN This paper presents the results of FEM analysis of dynamic trading hall to the influence of shock mining using Eurocode 8, on LGOM area. Seismic calculations were done in package Autodesk Robot Structural Analysis with the built-in module for seismic calculations.
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Engineering Transactions
EN Fiber-reinforced polymer (FRP) bars are a relatively new reinforcement material used in civil engineering. This type of reinforcement has low modulus of elasticity and high tensile strength. Hence, the behaviour of FRP reinforced concrete (RC) members is significantly different to that of traditiona[...]
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