Search Results - "Lassaad, Walha"

Dynamic vibrations in wind energy systems: Application to vertical axis wind turbine by Mabrouk, Imen Bel, El Hami, Abdelkhalak, Walha, Lassâad, Zghal, Bacem, Haddar, Mohamed

“…Dynamic analysis of Darrieus turbine bevel spur gear subjected to transient aerodynamic loads is carried out in the present study. The aerodynamic torque is…”
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Surrogate models for uncertainty analysis of micro-actuator by Abid, Fatma, Dammak, Khalil, El Hami, Abdelkhalak, Merzouki, Tarek, Trabelsi, Hassen, Walha, Lassaad, Haddar, Mohamed

“…Intelligent materials such as shape memory alloy have attracted the attention of scientists to innovate applications in micromachining technology. It is worth…”
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Effects of mass imbalance and eccentricity defects on the automotive differential dynamics by Djemal, Fathi, Lafi, Wassim, Tounsi, Dhouha, Akrout, Ali, Walha, Lassaad, Haddar, Mohamed

“…A differential mechanism is a cardinal component in most automobile applications. A systematic understanding of vibration properties of the differential…”
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Dynamic behavior of a two-stage gear train used in a fixed-speed wind turbine by Abboudi, Kamel, Walha, Lassâad, Driss, Yassine, Maatar, Mohamed, Fakhfakh, Taher, Haddar, Mohamed

“…The dynamic behavior of a two stage spur gear system used in a typical wind turbine is investigated in this paper. With the purpose of having an accurate…”
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Numerical modeling of shape memory alloy problem in presence of perturbation: application to Cu-Al-Zn-Mn specimen by Abid, Fatma, Elhami, Abdelkhalak, Merzouki, Tarek, Trabelsi, Hassen, Walha, Lassaad, Haddar, Mohamed

“…This paper proposes a methodology for taking into consideration uncertainties based on polynomial chaos (PC). The proposed approach is used in order to…”
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Effects of eccentricity defect on the nonlinear dynamic behavior of the mechanism clutch-helical two stage gear by Walha, Lassâad, Driss, Yassine, Khabou, Mohamed Taoufik, Fakhfakh, Tahar, Haddar, Mohamed

“…This paper investigates the nonlinear dynamic behavior of an automotive clutch coupled with a helical two stage gear system. The nonlinear dynamic model is…”
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Effect of manufacturing and assembly defects on two-stage gear systems vibration by Fakhfakh, Tahar, Walha, Lassâad, Louati, Jamel, Haddar, Mohamed

“…The modeling of the dynamic behavior of a two-stage gear system is made for a general configuration of wheels location. The excitation is induced by the…”
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Nonlinear dynamics of a two-stage gear system with mesh stiffness fluctuation, bearing flexibility and backlash by Walha, Lassâad, Fakhfakh, Tahar, Haddar, Mohamed

“…This work investigates dynamics of a two-stage gear system involving backlash and time-dependent mesh stiffness. This paper mainly consists to develop a 12…”
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Vibration analysis of nonlinear powertrain model with randomly cracked teeth under acyclism operation by Djemal, Fathi, Ghorbel, Ahmed, Graja, Oussama, Abdennadher, Moez, Walha, Lassâad, Haddar, Mohamed

“…Most of the researches works describe powertrain models under stationary operating conditions. However, the stationary assumption cannot always be true because…”
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Optimisation fiabiliste d’une structure en alliage à mémoire de forme by Abid, Fatma, El Hami, Abdelkhalak, Merzouki, Tarek, Trabelsi, Hassen, Walha, Lassaad, Haddar, Mohamed

“…L’objectif de l’optimisation fiabiliste (RBDO) est de trouver le meilleur compromis entre la sécurité et le coût. Plusieurs méthodes, telles que la méthode…”
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The Effect of the Brake Location and Gear Defects on the Dynamic Behavior of a Wind Turbine by Ghorbel, Ahmed, Graja, Oussama, Hentati, Taissir, Abdennadher, Moez, Walha, Lassâad, Haddar, Mohamed

“…Wind turbines have been used for decades in order to produce electricity. Its main advantage is that its energy is clean, does not harm the nature and…”
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Effects of gear mesh fluctuation and defaults on the dynamic behavior of two-stage straight bevel system by Yassine, Driss, Ahmed, Hammami, Lassaad, Walha, Mohamed, Haddar

“…This paper presents a three-dimensional model of two-stage straight bevel gear system. Periodic fluctuations of the gear meshes' stiffness are the main sources…”
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Analysis of Strongly Nonlinear Systems by Using HBM-AFT Method and Its Comparison with the Five-Order Runge–Kutta Method: Application to Duffing Oscillator and Disc Brake Model by Ghorbel, Ahmed, Zghal, Becem, Abdennadher, Moez, Walha, Lassâad, Haddar, Mohamed

“…Non-linear dynamic problems are difficult to analyze since no general methods exist to deal with them, which namely depend on several factors such as the…”
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Design optimization of PCM-based finned heat sinks for mechatronic components: A numerical investigation and parametric study by Debich, Bessem, El Hami, Abdelkhalak, Yaich, Ahmed, Gafsi, Wajih, Walha, Lassaad, Haddar, Mohamed

“…•An efficient numerical study of PCM-based plate fin heat sink matrix is presented.•The efficiency of the proposed model is verified numerically based on…”
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An efficient reliability-based design optimization study for PCM-based heat-sink used for cooling electronic devices by Debich, Bessem, El Hami, Abdelkhalak, Yaich, Ahmed, Gafsi, Wajih, Walha, Lassaad, Haddar, Mohamed

“…Nowadays, development of new technologies requires efficient mechatronic components which needs more sophisticated cooling systems. Furthermore, phase change…”
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Dynamic modelling of differential bevel gear system in the presence of a defect by Lafi, Wassim, Djemal, Fathi, Tounsi, Dhouha, Akrout, Ali, Walha, Lassaad, Haddar, Mohamed

“…•A linear time-varying model of a differential bevel gear set is proposed.•A 3D lumped parameter model of a differential bevel gear set is developed.•Free and…”
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Estimation of the damping model of a spur gear pair system including a time-varying loading by Yousfi, Nourhaine, Zghal, Bacem, Akrout, Ali, Walha, Lassaad, Haddar, Mohamed

“…The integral method was used in a previous research to identify the damping model but this technique has some limitations in estimating the damping model in a…”
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An efficient optimization based on the robust hybrid method for the coupled acoustic-structural system by Dammak, Khalil, Yaich, Ahmed, El Hami, Abdelkhalak, Walha, Lassaad, Haddar, Mohamed

“…In this article, an analytical formulation of the response of the coupled acoustic-structural system were performed. The reliability-based design optimization…”
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Study of the filament wound glass/polyester composite damage behavior by acoustic emission data unsupervised learning by Boussetta, Hajer, Beyaoui, Moez, Laksimi, Abdelouahed, Walha, Lassaad, Haddar, Mohamed

“…The contribution of this paper investigates the damage behavior of the Glass-polyester filament-wound composite (FWC). Indeed, a relevant tensile tests, with…”
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A robust method for the reliability-based design optimization of shape memory alloy actuator by Yaich, Ahmed, Abid, Fatma, Merzouki, Tarek, El Hami, Abdelkhalak, Walha, Lassaad, Haddar, Mohamed

“…This paper aims at finding an optimal design of a shape memory alloy (SMA) actuator that guarantees a required reliability level under uncertainties…”
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