International Journal of Mechanical Sciences
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8133
Papers 8658
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#1Hesam Parsa (AUT: Amirkabir University of Technology)H-Index: 11
#2Majid Saffar-Avval (AUT: Amirkabir University of Technology)H-Index: 27
Last. M.R. Hajmohammadi (AUT: Amirkabir University of Technology)H-Index: 28
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Abstract null null Thermal performance enhancement of solar air heaters is critical for efficient utilization of energy. In the present work, a numerical study and parametric optimization of turbulent convective heat transfer in a solar air heater duct with novel staggered cuboid baffles placed on the absorber plate are investigated. The heat transfer and pressure loss characteristics are analyzed, and an optimization procedure based on the Taguchi experimental design method is used to obtain th...
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#1Soo-Ho Jo (SNU: Seoul National University)H-Index: 6
#2Byeng D. Youn (SNU: Seoul National University)H-Index: 34
Abstract null null This paper aims to improve the existing electromechanically coupled analytical model that was developed for defect-induced phononic crystals (PnCs) designed for piezoelectric energy harvesting (PEH). The work outlined in this paper improves the model by considering lateral movements, which are not negligible when the slenderness ratio of the rods is small. Based on the Rayleigh-Love rod theory, the proposed method uses the generalized Hamilton's principle to derive two governi...
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#1Xinyue Wu (Tongji University)
#2Zhihui Wen (Tongji University)H-Index: 3
Last. Bahram Djafari-Rouhani (Lille University of Science and Technology)H-Index: 57
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Abstract null null Broadband attenuation of low frequency acoustic waves in compact structure designs is a challenging issue, especially in the application to seismic waves. In this work, we propose a new seismic metamaterial constituted by a combination of two different attenuating structures, namely pillars above the ground and core-shell inclusions embedded in the soil. As compared to the two constituting parts, this structure enables us to broaden the bandgap while shifting it towards lower ...
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Abstract null null In this paper, the free vibration behavior of inversely coupled composite laminated shells (ICCLSs) are studied using Haar wavelet discretization method (HWDM) for the first time. Two doubly-curved shells are inversely coupled on both end of cylindrical shell, in which the doubly-curved shell contains the elliptical, parabolic and hyperbolic shells. The individual shells are coupled by the continuous condition. The boundary condition is modeled by using the artificial spring t...
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#1Hongxu Wang (UNSW: University of New South Wales)H-Index: 7
#2Dakshitha Weerasinghe (USYD: University of Sydney)H-Index: 5
Last. Evgeny V. Morozov (UNSW: University of New South Wales)H-Index: 23
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Abstract null null A comprehensive study on the impact behaviour of UHMWPE woven fabrics is presented in this paper, which consists of four parts: geometric measurement of fabric parameters, tensile testing of constituent yarns, impact testing of fabrics, and numerical modelling of fabrics subjected to impact loading. Two fabric materials, i.e. a plain weave fabric made of Spectra® 1000 fibres and a 4-harness satin weave fabric made of Dyneema® SK75 fibres, were examined. Firstly, the geometric ...
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#1Xuelin Chen (CSU: Central South University)H-Index: 1
#2Jinyuan Tang (CSU: Central South University)H-Index: 22
Last. Anmin Liu (Hunan Institute of Technology)H-Index: 1
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Abstract null null The temperature fluctuation process on localized shear band is an important foundation of the chip formation mechanism in mesoscopic scale of time (700-70ms) and dimension (65-500um). An accurate transient temperature fluctuation modeling of localized shear band is proposed by using the classic method of moving heat source and thermal convection in mesoscopic scale. Where, chip geometry, time coefficient of the coupling effect from relative chip segment, temperature rise from ...
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Abstract null null The residual stress field produced by shot peening on Al-7075-T651 prismatic samples carrying V-edge notches is evaluated through combined Discrete Element Modeling (DEM) and Finite Element Modeling (FEM) simulations. Special care is paid to faithfully model the interaction between peening nozzle, shots and notched target through DEM analyses and to understand the coverage level at the notch root. The simulated stream of shots with randomly distributed size, location and veloc...
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#1Hongjin Choi (SNU: Seoul National University)H-Index: 2
#2Seonghwan Choi (SNU: Seoul National University)
Last. Myoung-Gyu Lee (SNU: Seoul National University)H-Index: 44
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Abstract In this study, the strengths of a steel pipe in different material orientations are predicted using a distortional anisotropic hardening model, namely, the HAH model, implemented in a finite element simulation. The investigated hardening can capture the transient flow behavior under bending and reverse bending strain paths. In addition, the model reproduces the material behavior under orthogonally applied tension from the prior deformation path. To improve the predictive accuracy of the...
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Abstract null null The mechanisms of cavitation erosion have been the subject of numerous studies, but the cavitation dynamics and flow aggressiveness thereby produced are less known. We develop a new numerical model to capture the cavity evolution and pressure pulsation, which are related to cavitation erosion. The source term in the interphase mass transfer model is obtained from Rayleigh–Plesset equation under the acoustic field. Mathematical closure is achieved by the temperature-dependent T...
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Abstract null null Gallium oxide (Ga2O3) single crystals are an ultrawide bandgap semiconductor with wide industrial applications. Ultra-precision grinding is an essential shaping process in the fabrication of high quality Ga2O3 substrates. However, due to the lack of understanding of their removal mechanism, the development of high efficiency and low-damage grinding technology for Ga2O3 substrates faces great challenges. In this work, the removal mechanism of (010) β-Ga2O3 was systematically in...
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Top fields of study
Finite element method
Composite material
Materials science
Deformation (mechanics)
Mechanics
Structural engineering
Classical mechanics