Parcourir 2010 fascicula8 nr1 par date de publication
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Postbuckling Behaviour of Composite Plates with Imperfections
(UDJG, 2010)The aim of the work presented in this paper is to analyze the influence of the imperfections on the changes in the buckling behaviour of ship deck plates made of composite materials. Thus, parametric analysis of the ... -
Monitoring the Influence of Thermomagnetic Treatment on the Ion Nitrided Layer Using Microhardness Curves, for 42MOCR11 Steel Grade Case
(UDJG, 2010)Each of the stages of heat treatment in magnetic field (AC or DC) influences the hardness and durability of different steels. This influence is extended in the case of the measured microhardness values obtained in the ... -
A Three-Dimensional Elastic-Plastic Analysis of Rolling Contacts
(UDJG, 2010)An analysis model has been developed to model the nonlinear strain rate dependent deformation of rolling bearing steel stressed in the elastic-plastic domain. The model is designed in the frame of the incremental theory ... -
The Influence of the Sintering Atmospheres on the Wear Behaviour of the Copper Based Alloys
(UDJG, 2010)The Powder Metallurgy (PM) technique allows manufacturing the sintered selflubricating materials having a high wear resistance. It is well known that the small and medium sized bearings are processed by PM with better ... -
Surface Roughness Parameters Evolution Under Fatigue Loading
(UDJG, 2010)The main objective of this paper is to demonstrate that in order to have a complete characterisation of fatigue degradation it is necessary to analyze the evolution of surfaces roughness, which can become a stress ... -
Power Losses Estimation in Precessional Gear
(UDJG, 2010)Having established the estimation relations of power losses in basic kinematical joints, it becomes relatively simple to establish the estimation relation of kinematical precessional transmission efficiency which, on the ... -
The Reliability of the Rlac Bore-Hole Pumps
(UDJG, 2010)The paper aims to present a study concerning the determination of the borehole pumps operating reliability. The considered bore-hole pump for this study is RLAC 2 7/8 x 1¾ in x 32c type and it equips the oil-wells of ... -
Numerical and Experimental Investigations Upon Articular Cartilage Mechanical Hysteresis
(UDJG, 2010)The paper presents biomechanical and tribological considerations upon articular cartilage. The experimental in vitro results from static and dynamic contact tests are presented together with numerical modelling of the ... -
Elastic-Plastic Contact Modeling. Part I: Algorithm Overview and Assessment of Plastic Strain Increment
(UDJG, 2010)A fast algorithm for elastic-plastic contact simulation is overviewed in this paper. Betti’s reciprocal theorem is employed to assess surface normal displacement and stress state in an elastic half-space in the presence ... -
Elastic-Plastic Contact Modeling. Part II: Numerical Simulations and Program Validation
(UDJG, 2010)Elastic plastic spherical contact is simulated using an algorithm proposed in a companion paper. Materials of contacting bodies are assumed to have different behaviours: rigid (R), elastic (E), elastic-plastic with isotropic ...
