In this paper we present the analysis of convective heat transfer in the walls of a house insulat... more In this paper we present the analysis of convective heat transfer in the walls of a house insulated with polystyrene. In the first part we make an evaluation of the insulation that is currently used in the houses. We start the simulation using a real model of a house and than we make the model in Solidworks 2009. We run the model in Solidworks Thermal study after we insert the initial conditions. We notice that the obtained results indicate a problem which occurs inside the brick, the dew-point appearance. Further investigations must be made to solve this problem.
Romanian Journal of Transport Infrastructure, 2014
Road bridges with steel arches are used efficiently for medium and large spans. These solutions s... more Road bridges with steel arches are used efficiently for medium and large spans. These solutions show advantages determined by the arches geometry, by the number and distributions of hangers and by the form and type of the arches bracing system. The appearance of the welding as standard connection procedure for steel bridges, for road bridge decks two solutions are mainly used: - the solution with a concrete slab acting together with the stringers and cross beams (the composite solution); - the solution with orthotropic deck (the orthotropic deck consists in a network formed by the continuous longitudinal stiffeners and cross beams connected at the upper part by a steel plate). In this paper a comparative study of the strength and fatigue checks performed on the new road bridge over river Argeşel near Mioveni in Argeş county is presented. The results are obtained using the Romanian standards STAS 1844-75 and SR 1911-1998 and the European norms SR EN 1990, SR EN 1993 and SR EN 1994. T...
In this paper we present the analysis of convective heat transfer in the walls of a house insulat... more In this paper we present the analysis of convective heat transfer in the walls of a house insulated with polystyrene. In the first part we make an evaluation of the insulation that is currently used in the houses. We start the simulation using a real model of a house and than we make the model in Solidworks 2009. We run the model in Solidworks Thermal study after we insert the initial conditions. We notice that the obtained results indicate a problem which occurs inside the brick, the dew-point appearance. Further investigations must be made to solve this problem.
Romanian Journal of Transport Infrastructure, 2014
Road bridges with steel arches are used efficiently for medium and large spans. These solutions s... more Road bridges with steel arches are used efficiently for medium and large spans. These solutions show advantages determined by the arches geometry, by the number and distributions of hangers and by the form and type of the arches bracing system. The appearance of the welding as standard connection procedure for steel bridges, for road bridge decks two solutions are mainly used: - the solution with a concrete slab acting together with the stringers and cross beams (the composite solution); - the solution with orthotropic deck (the orthotropic deck consists in a network formed by the continuous longitudinal stiffeners and cross beams connected at the upper part by a steel plate). In this paper a comparative study of the strength and fatigue checks performed on the new road bridge over river Argeşel near Mioveni in Argeş county is presented. The results are obtained using the Romanian standards STAS 1844-75 and SR 1911-1998 and the European norms SR EN 1990, SR EN 1993 and SR EN 1994. T...
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Papers by Dima Alexandru