Hysteretic Loops in Correlation with the Maximum Dissipated Energy, for Linear Dynamic Systems

P Bratu - Symmetry, 2019 - mdpi.com
This paper presents the outcomes of the theoretical and experimental research carried out
on a real model at natural scale using Voigt–Kelvin linear viscoelastic type m, c, and k …

Evaluation of the linear viscoelastic force for a dynamic system (m, c, k) excited with a rotating force

P Bratu, A Buruga, O Chilari, AI Ciocodeiu… - Romanian Journal of …, 2019 - rjav.sra.ro
The paper presents the topic of the representation of the hysteretic loops raised on the basis
of the variation of the linear viscoelastic force depending on the variation of the …

Evaluation of the Dissipated Energy in Vicinity of the Resonance, depending on the Nature of Dynamic Excitation

P Bratu, C Dobrescu - Romanian journal of acoustics and vibration, 2019 - rjav.sra.ro
The paper analyses the issue of functioning in the vicinity of the resonance of the mechanic
equipment and/or devices with excitation sources the maximum perturbation force of which …

The assessment of the dynamic response to seismic excitation for constructions equipped with base isolation systems according to the Newton-Voigt-Kelvin model

P Bratu, A Stuparu, P Sorin, N Iacob… - ACTA TECHNICA …, 2018 - atna-mam.utcluj.ro
The paper presents the results of the researches carried out for constructions base isolation
technical solutions using rheological dissipative elastic devices modelled as a viscous …

The dynamic analyse of a construction with the base insulation consisting in anti-seismic devices modelled as a Hooke-Voigt-Kelvin linear rheological system

P Bratu, A Stuparu, A Leopa… - ACTA TECHNICA …, 2018 - atna-mam.utcluj.ro
The paper presents the main results of theoretical and experimental researches regarding
dynamic behaviour of constructions (building, bridge, or viaduct) with the base insulation …

Hysteresis Response Loops in Stationary Vibrator Regimes for Elastomeric Insulators

P Bratu, C Dobrescu, N Drăgan - Symmetry, 2022 - mdpi.com
In order to raise the hysteresis loops in stationary dynamic regimes in the case of
elastomeric insulators, specialized dynamic stands are used that may obtain both the …

Variety of rheological models used in the isolation of the base for earthquake challenged constructions

P BRATU - ACTA TECHNICA NAPOCENSIS-Series: APPLIED …, 2020 - atna-mam.utcluj.ro
There are presented the results of the researches performed for the optimization of the base
isolation systems for residential buildings, bridges and viaducts. Thus, there were analyzed …

Research On The Process Of Vibratory Compaction Of Sustainable Roads

D CĂPĂŢINĂ, N Cristina… - ACTA TECHNICA …, 2020 - atna-mam.utcluj.ro
The paper evidences preliminary research results on the process of vibratory compaction of
soils for sustainable road construction. For an efficient process, one important aspect is that …

Parametric Assessment of the Elastomeric Anti-vibration Devices According to the Dynamic Test Regime

P Bratu - Acoustics and Vibration of Mechanical Structures …, 2022 - Springer
It is presented the dynamic test method on special stands for the anti-vibration elastomer
devices according to the dynamic loading regimes, namely: ante-resonance, resonance and …

Parametric Analysis of Dynamic Insulation in the Action of the Seismic Movements of the Base-Insulated Buildings

P Bratu, C Opriţescu, A Ţârdea, O Voicu… - Acoustics and Vibration …, 2021 - Springer
Buildings protection against seismic actions has, in recent times, led to an intense emulation
of innovative solutions for the insulation of the base. Thus, under the new conditions of …