Structural damping optimization by discrete parametric changes of isolation systems of base at seismic movements / Optimizarea amortizării structurale prin variaţii discrete parametrice a sistemelor de izolare a bazei la mişcări seismice

21 Oct

Posted at 13:36h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 This paper presents the methods of structural analysis of the level of damping elastomeric bearing system of second order. Thus, the method of analysis and optimization is to change with discrete values the stiffness of the elastomeric system...

21 Oct

Posted at 13:35h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 This paper presents synthesis results of applied researches on the behaviour of modal road viaducts which are elastic leaning and have only mostly only rigid motions with elastic. Eigen mode analysis was performed for a road viaduct performed...

21 Oct

Posted at 13:33h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 The paper deals with effects cumulation in the case of a mechanical structure cyclic loaded with blocks of different stresses. The most known relationships proposed in literature for this loading case, are empirical, refers to linear-elastic behavior of...

21 Oct

Posted at 13:32h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 The authors conducted experimental research on the buggy ladle and beams chesonate models manufactured at scale. The actual structure of the bogie was tested on a special stand set up in the laboratory of Strength of Materials Department...

21 Oct

Posted at 13:31h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 The paper proposes to assess the level of reliability of the devices taking into account the evaluation coefficient 〖K_ij〗^β and the importance coefficient 〖K_j〗^α, related to the parameters measured by diagnosis.

21 Oct

Posted at 13:30h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 There are underlined some forms of engineering design process in correlation with scientific research and technology. The main European directives and regulations in ecodesign are analyzed.

21 Oct

Posted at 13:30h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 The increasing of the a.c. motors efficiency is a stringent necessity in Europe, with important effects on the final users’ expenditures and on the decreasing of the emissions associated by the burning of the primary fuel to produce...

21 Oct

Posted at 13:29h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 Intentional electromagnetic interferences (IEMIs), as « malicious generation of electromagnetic energy introducing noise or signals into electric and electronic systems, thus disrupting, confusing or damaging these systems for terrorist or criminal purposes » (acc. to IEC International standard 61000-2-13) represent...

21 Oct

Posted at 13:29h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 For many projects the improvement of the soil is required over a great thickness, considering the increase of the bearing capacity of the foundation soil in order to support the construction loads, to eliminate the collapse potential of...

21 Oct

Posted at 13:28h in - Classification of themes - All, - Member Academies - All, Co-studies, Research, Technologies, Innovation and Employment, Romanian Academy of Technical Sciences (ASTR) by
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Romanian Academy of Technical Sciences (ASTR) 2013 The environmental benefits from DC (Dynamic Compaction) are significant – the ground is consolidated in situ so there is no need for transportation and deposit of soil spoils or waste. This paper presents the main theoretical aspects of...