Volume 12 (2022)
Volume 11 (2021)
Volume 10 (2020)
Volume 9 (2019)
Volume 8 (2018)
Volume 7 (2017)
Volume 6 (2016)
Volume 5 (2015)
Volume 4 (2014)
Volume 3 (2013)
Volume 2 (2012)
Volume 1 (2011)

An efficient finite difference time domain algorithm for band structure calculations of Phononic crystal

M. Moradi; M. Bagheri Nouri

Volume 6, Issue 2 , June 2017, , Pages 93-101


  In this paper, a new algorithm for studying elastic wave propagation in the phononic crystals is presented. At first, the displacement-based forms of elastic wave equations are derived and then the forms are discretized using finite difference method. So the new algorithm is called the displacement-based ...  Read More

Presenting Three Design Methods for Axial Compressor Blade via Optimization

Omid Fathi; Hadi Kargarsharifabad

Volume 8, Issue 1 , September 2018, , Pages 107-120


  Improving the efficiency of compressors has been one of the most important goals of researchers over the years. In this paper, three different methods are presented for parameterization and blade optimization of axial flow compressor. All methods consist of flow analysis tool, optimization algorithms, ...  Read More

Micro and Nano Systems
The effect of small scale and intermolecular forces on the nonlinear Pull-in instability behavior of nano-switches using differential quadrature method

Yaghoub Tadi Beni; Seyyed Mohammad Fatemi

Volume 7, Issue 1 , August 2017, , Pages 109-125


  Using differential quadrature method (DQM), this study investigated pull-in instability of beam-type nano-switches under the effects of small-scale and intermolecular forces including the van der Waals (vdW) and the Casimir forces. In these nano-switches, electrostatic forces served as the driving force, ...  Read More

Bearing fault prognostics using Takagi-Sugeno of extended fuzzy with recursive least square algorithms

Henry Ogbemudia Omoregbee; Modestus O. Okwu; Mabel U. Olanipekun; Bright A Edward

Volume 12, Issue 1 , August 2022, , Pages 121-132


  This paper presents the detection of fault prognostics in bearings with the application of extended Takagi-Sugeno fuzzy recursive least square algorithms (exTSFRLSA). The nonlinear system is decomposed into a multi-model structure, consisting of linear models that are not inherently independent, due ...  Read More

Manufacturing Processes
Investigation of hot metal gas forming process of square parts

Mehrdad Nasrollahzade; Seyed Jalal Hashemi; Hassan Moslemi Naeini; Amirhosein Roohi; Shahryar Imani Shahabad

Volume 10, Issue 1 , September 2020, , Pages 125-138


  Aluminum alloys are considered a lot in the automotive and aerospace industry because of their high strength to weight ratio. In this manuscript, the gas forming process of aluminum AA6063 tubes at high temperatures up to 500°C is investigated, through experimental and numerical tests. Therefore, ...  Read More

Impact Mechanics
Numerical investigation and optimization of the mechanical behavior of thin-walled tubes with combined geometric

Farshid Kholoosi; Saman Jafari; Mahdi Karimi

Volume 11, Issue 1 , September 2021, , Pages 127-138


  In this study, the crushing behavior and energy absorption of various thin-walled structures under quasi-static loading are investigated. Some experimental data from similar work are used for the validation of a simulated model. Some samples are designed and considered with different combined geometries. ...  Read More

Perturbation Technique
Entropy generation analysis of non-newtonian fluid in rotational flow

Abbas Kosarineia

Volume 9, Issue 1 , September 2019, , Pages 133-144


  The entropy generation analysis of non-Newtonian fluid in rotational flow between two concentric cylinders is examined when the outer cylinder is fixed and the inner cylinder is revolved with a constant angular speed. The viscosity of non-Newtonian fluid is considered at the same time interdependent ...  Read More

Computational Fluid Dynamics (CFD)
Three-dimensional characteristic approach for incompressible thermo-flows and influence of artificial compressibility parameter

Tohid Adibi

Volume 8, Issue 2 , February 2019, , Pages 223-234


  In this paper the characteristics of unsteady three-dimensional incompressible flows with heat transfer are obtained along with artificial compressibility of Chorin. At first, compatibility equations and pseudo characteristics for three-dimensional flows are derived from five governing equations (continuity ...  Read More

Fracture Mechanics
A novel modification of decouple scaled boundary finite element method in fracture mechanics problems

Mahdi Yazdani

Volume 7, Issue 2 , March 2018, , Pages 243-260


  In fracture mechanics and failure analysis, cracked media energy and consequently stress intensity factors (SIFs) play a crucial and significant role. Based on linear elastic fracture mechanics (LEFM), the SIFs and energy of cracked media may be estimated. This study presents the novel modification of ...  Read More

Numerical simulation of aspect ratio effect of the rectangular cylinder on the aerodynamic noise

Sarallah Abbasi

Volume 12, Issue 2 , February 2023, , Pages 263-273


  The purpose of this paper is to investigate the effect of aspect ratio on vortex shedding, and transient flow-induced noise over a rectangular cylinder is presented. The freestream velocity is assumed 50 m/s. URANS equations with turbulence model  are employed to flow analysis. Aerodynamic noise ...  Read More

Compressible Flow
Effect of blade profile on the performance characteristics of axial compressor in design condition

Sarallah Abbasi; ali joodaki

Volume 9, Issue 2 , February 2020, , Pages 287-296


  The choice of geometrical shape of the blades has a considerable effect on aerodynamic performance and flow characteristics in axial compressors. In this paper, the effects of the blades shape on the aerodynamic design characteristics are investigated based on Streamline Curvature Method (SCM). Initially, ...  Read More

Nonlinear Solution
Effect of geometrical parameters on fluid film coefficients in tilting pad journal bearing

Harsh Kumar Dixit; T.C Gupta

Volume 10, Issue 2 , April 2021, , Pages 405-427


  The simplified analytical method has developed to analyze the effect of bearing geometrical parameters, i.e. eccentricity ratio, journal rotation speed, slenderness ratio, bearing radial clearance, pad pivot offset and the number of pads on tilting pad journal bearing (TPJB) properties, i.e. fluid film ...  Read More

Braking intensity recognition with optimal K-means clustering algorithm

Ali Mirmohammad Sadeghi; Abdollah Amirkhani; Behrooz Mashadi

Volume 11, Issue 2 , March 2022, , Pages 409-423


  Recognizing a driver’s braking intensity plays a pivotal role in developing modern driver assistance and energy management systems. Therefore, it is especially important to autonomous and electric vehicles. This paper aims at developing a strategy for recognizing a driver’s braking intensity ...  Read More

Vibration analysis of functionally graded cylindrical shells with different boundary conditions subjected to thermal loads

M. Talebitooti; M. Ghasemi; S. M. Hosseini

Volume 6, Issue 2 , June 2017, , Pages 103-114


  In the present work, study of the vibration of a functionally graded (FG) cylindrical shell made up of stainless steel, zirconia, and nickel is presented. Free vibration analysis is presented for FG cylindrical shells with simply supported-simply supported and clamped–clamped boundary condition ...  Read More

Nonlinear Solution
An efficient analytical solution for nonlinear vibrations of a parametrically excited beam

saeed mahmoudkhani

Volume 7, Issue 1 , August 2017, , Pages 127-136


  An efficient and accurate analytical solution is provided using the homotopy-Pade technique for the nonlinear vibration of parametrically excited cantilever beams. The model is based on the Euler-Bernoulli assumption and includes third order nonlinear terms arisen from the inertial and curvature nonlinearities. ...  Read More

Computational Fluid Dynamics (CFD)
Analytical and comparative investigations on counter flow heat exchanger using computational fluid dynamics

Shuvam Mohanty; Om Parkash; Rajesh Arora

Volume 10, Issue 1 , September 2020, , Pages 139-152


  This paper presents a comprehensive and exclusive thermodynamic analysis of counter flow heat exchanger under various operating and geometrical conditions. Analysis system (ANSYS) workbench 14.0 has been used for computational analysis and comparison with previous literature has been carried out in view ...  Read More

Finite element simulation of crack growth path and stress intensity factors evaluation in linear elastic materials

Abdulnaser Mohammed Alshoaibi; Omar Yasin

Volume 11, Issue 1 , September 2021, , Pages 139-149


  This paper proposes a combination of FRANC2D/L (2D crack growth simulation program) and ANSYS mechanical program (3D structural analysis for fracture mechanic analysis). The comparisons between the two software are performed for different case studies for stress intensity factors (SIFs) and crack growth ...  Read More

Identification of rotor bearing parameters using vibration response data in a turbocharger rotor


Volume 9, Issue 1 , September 2019, , Pages 145-156


  Turbochargers are most widely used in automotive, marine and locomotive applications with diesel engines. To increase the engine performance nowadays, in aerospace applications also turbochargers are used. Mostly the turbocharger rotors are commonly supported over the fluid film bearings. With the operation, ...  Read More

Heat and Mass Transfer
Unsteady convective flow for MHD powell-eyring fluid over inclined permeable surface

Amit Parmar; Shalini Jain

Volume 9, Issue 2 , February 2020, , Pages 297-312


  The current article has investigated unsteady convective flow for MHD non-Newtonian Powell-Eyring fluid embedded porous medium over inclined permeable stretching sheet. We have pondered the thermophoresis parameter, chemical reaction, variable thermal conductivity, Brownian motion, variable heat source ...  Read More

Thermo-mechanical characterization of post-consumer recycled high impact polystyrene from disposable cups: Influence of the number of processing cycles

Hanan EL BHILAT; Khalid El Had; Houda SALMI; Abdelilah Hachim

Volume 10, Issue 2 , April 2021, , Pages 427-436


  In this study, the effect of six successive recycling cycles of the recycled material including high impact polystyrene disposable cups on tensile properties, glass transition temperature, flexural, impact strength tests and fluidity were studied. It has been found that after increasing recycling, the ...  Read More

Enhancing the low cycle fatigue strength of AA6061 aluminum alloy by using the optimized combination of ECAP and precipitation hardening

M. Jooybari; J. Shahbazi Karami; M. Sheikhi

Volume 6, Issue 2 , June 2017, , Pages 115-127


  In the present study, mechanical properties and low cycle fatigue behavior of a solid-solutionized AA6061 aluminum alloy produced by equal channel angular pressing (ECAP) process were investigated. The grain refinement after two passes of ECAP significantly increased the yield stress and ultimate tensile ...  Read More

Fluid Mechanics
Analytical study of heat and mass transfer in axisymmetric unsteady flow by ADM

A Hassanvand; Mojtaba Saei Moghaddam; M. Barzegar Gerdroodbary; Y Amini

Volume 11, Issue 1 , September 2021, , Pages 151-163


  Finding the solutions for heat and mass transfer problems is significant to reveal the main physics of engineering issues. In this work, the Adomian decomposition method is chosen as a robust analytical method for the investigation of temperature and flow features in a viscous fluid that moves between ...  Read More

Computational Fluid Dynamics (CFD)
Numerical modeling of three-phase flow through a Venturi meter using the LSSVM algorithm

Omid Khayat; Hossein Afarideh

Volume 10, Issue 1 , September 2020, , Pages 153-170


  One of the challenging problems in the Oil & Gas industry is accurate and reliable multiphase flow rate measurement in a three-phase flow. Application of methods with minimized uncertainty is required in the industry. Previous developed correlations for two-phase flow are complex and not capable ...  Read More

Composite Materials
Dynamic stress concentration in a hybrid composite laminate subjected to a sudden internal break

Erfan Mirshekari; Arash Reza

Volume 9, Issue 1 , September 2019, , Pages 157-171


  In this work, transient dynamic stress concentration in a hybrid composite laminate subjected to a sudden internal crack is examined. It is assumed that all fibers lie in one direction and the applied load acts along direction of fibers. Two types arrangements are considered for the fiber; square and ...  Read More

The effect of injection parameters on dimensional accuracy of wax patterns for investment casting

Ehsan Barati; Javad Akbari

Volume 9, Issue 2 , February 2020, , Pages 313-322


  Thermal expansion and hot deformation are two phenomena causing dimensional errors in investment casting. This error occurs in dimensions between the die and wax pattern. Therefore, the wax's thermo-physical and thermo-mechanical properties, the metal die features, and the process parameters affect the ...  Read More