Meccanica
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#1Yaser Taghipour (University of Shahrood)
#2Pooria Akbarzadeh (University of Shahrood)H-Index: 9
Last. Mohammad Eftekhari Yazdi (IAU: Islamic Azad University)H-Index: 7
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One of the most widely used components in industrial rotary machines is the plain journal bearings. These components consist of a rotating shaft, which is separated from the outer sheath by a thin layer of lubricant and rotated in it. In this research, the journal bearings are investigated numerically in three dimensions using ANSYS-FLUENT software. To have a more realistic analysis, the cavitation, which is a common event in bearings, is simulated. The Eulerian two-phase model along with Zwart–...
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Numerical and experimental analyses regarding the dynamic behavior of an onboard rotor are presented in this work. Aircraft engines, rotating machines placed in offshore petroleum boards, automotive engines, helicopter rotors, and offshore wind turbines are typical examples of onboard rotating machines. Therefore, in the present contribution, a finite element method is used to formulate the differential equations of motion associated with the considered onboard rotor system. The model is based o...
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#1Paolo Podio-Guidugli (Accademia Nazionale dei Lincei)H-Index: 23
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#1S. Saravanan (Bharathiar University)H-Index: 5
#2M. Meenasaranya (Bharathiar University)
Free convective onset in a bottom heated porous medium under the influence of transverse magnetic field is studied within the framework of nonlinear theory. Simple harmonic time modulation is imposed on either the bounding surface temperature or the gravitational field acting on the medium. The Darcy–Lapwood–Brinkman model of flow through porous media is employed with two basic types of physical boundary conditions. The generalized energy approach coupled with the variational principles is follo...
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#1A. Hajlaoui (University of Sfax)H-Index: 8
#2Fakhreddine Dammak (University of Sfax)H-Index: 27
In this paper, the three-dimensional post-buckling analysis of functionally graded materials plate (FGM) with temperature independent (TID) and dependent (TD) material properties under different types of thermal loads is examined. The analysis is performed by a modified first-order enhanced solid-shell element. The formulation is based on the first-order shear deformation theory (FSDT) with a special representation of the transverse shear strains imposed in the compatible strain part. To subdue ...
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#1Siyuan Liu (Chongqing University)H-Index: 4
#2Caichao Zhu (Chongqing University)H-Index: 19
Last. Alfonso Fuentes-Aznar (RIT: Rochester Institute of Technology)H-Index: 7
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The investigation of the influence of different errors of alignment on the mesh behavior of hypoid gears with low crossing shaft angle has been carried out. As a result, a simplified methodology of compensation of errors of alignment and correction of the contact pattern by controlled axial displacements to the pinion and wheel of the hypoid gear set has been proposed. The shaft angle error and the offset error mainly influence the position of the contact pattern in profile direction. The pinion...
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#1Xian Zhang (UIUC: University of Illinois at Urbana–Champaign)H-Index: 3
#2Anatoliy Malyarenko (MDH: Mälardalen University College)H-Index: 9
Last. Martin Ostoja-Starzewski (UIUC: University of Illinois at Urbana–Champaign)H-Index: 46
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This paper reports a cellular automata (CA) study of the transient dynamic responses of anti-plane shear Lamb’s problems on random fields (RFs) with fractal and Hurst effects. Both Cauchy and Dagum random field models are employed to capture the combined effects of spatial randomness in both mass density and stiffness tensor fields. First, with a dyadic representation, we formulate a second-rank anti-plane stiffness tensor random field (TRF) model with full anisotropy. Its statistical, fractal, ...
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#1Recep M. Gorguluarslan (TOBB University of Economics and Technology)H-Index: 7
#2O.Utku Gungor (TOBB University of Economics and Technology)
Last. Erdem Erem (TOBB University of Economics and Technology)
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The objective of this study is to investigate the energy absorption performance of the graded lattice energy absorbers designed by a stiffness-based size optimization process under static loadings applied during the in-service conditions. The energy absorber geometry is modeled using three different lattice types, namely complex cubic, octet cubic, face- and body-centered cubic. The stiffness-based size optimization subjected to a static bending load is conducted to determine the optimal strut d...
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#1Dongquan Wu (CAUC: Civil Aviation University of China)
#2Heow Pueh Lee (NUS: National University of Singapore)H-Index: 53
The in-plane impact and crushing properties have been studied for the Semi Reentrant structure (SRS) by using numerical simulations and theoretical studies. Different deformation modes during impact process could be observed under the various impact velocities, and there were three and two deformation modes in x1 and x2 directions, respectively, no matter for single or double sidewall conditions. The influence of arm length l and cell wall thickness t on the critical impact velocities of differe...
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#1Elvis Villano (SHU: Sheffield Hallam University)
#2Basilio Lenzo (UNIPD: University of Padua)H-Index: 12
Last. Aleksandr SakhnevychH-Index: 4
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The knowledge of key vehicle states is crucial to guarantee adequate safety levels for modern passenger cars, for which active safety control systems are lifesavers. In this regard, vehicle sideslip angle is a pivotal state for the characterization of lateral vehicle behavior. However, measuring sideslip angle is expensive and unpractical, which has led to many years of research on techniques to estimate it instead. This paper presents a novel method to estimate vehicle sideslip angle, with an i...
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