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)
1. Non destructive damage severity estimation in beam using change in extended cross modal strain energy

Mellel Nacim; Ouali Mohammed; Dougdag Mourad; Mohammedi Brahim

Volume 11, Issue 1 , Summer and Autumn 2021, , Pages 57-65


  This paper presents an extended cross modal strain energy change method to estimate the severity of damage associated with limited modal data in beam-like structures. This method takes in account the correlation between the analytical modal data and the measured incomplete modal data. A procedure ...  Read More

2. Dynamic response of a shaft of a Pelton turbine due to impact of water jet

Mahesh Luintel; Tri Ratna Bajracharya

Volume 10, Issue 1 , Summer and Autumn 2020, , Pages 73-84


  Performance and reliability of any rotating machine can be studied by proper dynamic analysis of the machine. In this regard, this paper presents the method to study the dynamic response of the shaft of a Pelton turbine due to the impact of water jet. Equations of motion for the bending vibration of ...  Read More

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


Volume 9, Issue 1 , Summer and Autumn 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

4. A comparison between modal damping ratios identified by NExT-ERA and frequency domain impact test

Ali Nouri; Sajad Hajirezaee

Volume 8, Issue 1 , Summer and Autumn 2018, , Pages 15-24


  In this research, the modal parameters of a beam in free-free condition are extracted by performing different experiments in laboratory. For this purpose, two different techniques are employed. The first methodology is considered as a time domain method in Operational Modal Analysis. While the other ...  Read More

5. Evaluation of combined hardening model in ratcheting behavior of pressurized piping elbows subjected to in-plane moments

Seyed javid Zakavi; Behzad Shiralivand; Mohammad nourbakhsh

Volume 7, Issue 1 , Summer and Autumn 2017, , Pages 57-71


  In this paper the ratcheting behavior of carbon steel(ASTM A106B) and stainless steel(304L) elbows is studied under steady internal pressure and in-plane external moments at frequencies typical of seismic excitations. The finite element analysis with the nonlinear isotropic/kinematic (combined) hardening ...  Read More

6. LQG vibration control of sandwich beams with transversely flexible core equipped with piezoelectric patches

Nima Nadirian; Hasan Biglari; Mohammad Ali Hamed

Volume 7, Issue 1 , Summer and Autumn 2017, , Pages 85-97


  The purpose of this paper is control of simply supported flexible core sandwich beam's linear vibration equipped with piezoelectric patches under different loads. The effects of external forces imposed on sandwich beam can be reached to a minimum value by designing an appropriate controller and control ...  Read More

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

M. Moradi; M. Bagheri Nouri

Volume 6, Issue 2 , Winter and Spring 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

8. 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 , Winter and Spring 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

9. Resonant frequency of bimorph triangular V-shaped piezoelectric cantilever energy harvester

Rouhollah Hosseini; Mohsen Hamedi

Volume 6, Issue 1 , Summer and Autumn 2016, , Pages 65-73


  The concept of “energy harvesting” is to design smart systems to capture the ambient energy and to convert it to usable electrical power for supplying small electronics devices and sensors. The goal is to develop autonomous and self-powered devices that do not need any replacement of traditional ...  Read More

10. Experimental and finite-element free vibration analysis and artificial neural network based on multi-crack diagnosis of non-uniform cross-section beam

B. Asmar; M. Karimi; F. Nazari; A. Bolandgerami

Volume 5, Issue 1 , Summer and Autumn 2015, , Pages 1-11


  Crack identification is a very important issue in mechanical systems, because it is a damage that if develops may cause catastrophic failure. In the first part of this research, modal analysis of a multi-cracked variable cross-section beam is done using finite element method. Then, the obtained results ...  Read More

11. Assessing different nonlinear analysis methods for free vibrations of initially stressed composite laminated plates

H. M. Panahiha; A. Davar

Volume 5, Issue 1 , Summer and Autumn 2015, , Pages 25-35


  In this paper, the nonlinear free vibrations of thin symmetric and non-symmetric cross-ply composite plates subjected to biaxial initial stresses are investigated. Because of their excellent properties such as specific strength and specific stiffness, composite plates have wide applications in aerospace ...  Read More

12. Application of linear and nonlinear vibration absorbers for the nonlinear beam under moving load

Nadia Parandeh Afshar; Farhad S. Samani; Moslem Molaie

Volume 5, Issue 1 , Summer and Autumn 2015, , Pages 51-60


  Recently, a large amount of studies have been related to nonlinear systems with multi-degrees of freedom as well as continuous systems. The purpose of this paper is to optimize passive vibration absorbers in linear and nonlinear states for an Euler-Bernoulli beam with a nonlinear vibratory behavior under ...  Read More

13. Free vibrations analysis of a sandwich rectangular plate with electrorheological fluid core

M. M. Soleymani; M. A. Hajabasi; S. Elahi Mahani

Volume 5, Issue 1 , Summer and Autumn 2015, , Pages 71-81


  In this paper, a rectangular sandwich plate with a constrained layer and an electrorheological (ER) fluid core is investigated. The rectangular plate is covered an ER fluid core and a constraining layer to improve the stability of the system. The two outer layers of the sandwich structure are elastic. ...  Read More

14. Large amplitude vibration prediction of rectangular plates by an optimal artificial neural network (ANN)

Mahdi Karimi; Alireza Shooshtari; Soheil Razavi

Volume 4, Issue 1 , Summer and Autumn 2014, , Pages 55-65


  In this paper, nonlinear equations of motion for laminated composite rectangular plates based on the first order shear deformation theory were derived. Using a perturbation method, the nonlinear equation of motion was solved and analytical relations were obtained for natural and nonlinear frequencies. ...  Read More

15. Optimal design of a vibration absorber for tremor control of arm in Parkinson's disease

Rouhollah Hosseini; Keikhosrow Firoozbakhsh; Hossein Naseri

Volume 3, Issue 2 , Winter and Spring 2014, , Pages 85-94


  Because the underlying physiology of pathological tremor in a Parkinson's patient is not well understood, the existing physical and drug therapies have not been successful in tremor treatment. Different mathematical modeling of such vibration has been introduced to investigate the problem and reduce ...  Read More

16. Experimental investigations on the softening and ratcheting behaviors of steel cylindrical shell under cyclic axial loading

M. Shariati; H. Hatami; M. Damghani Nouri

Volume 2, Issue 2 , Winter and Spring 2013, , Pages 11-22


  In this research, softening and ratcheting behaviors of Ck20 alloy steel cylindrical shells were studied under displacement-control and force-control cyclic axial loading and the behavior of hysteresis curves of specimens was also investigated. Experimental tests were performed by a servo-hydraulic INSTRON ...  Read More

17. Effect of shell axial deformation on flutter of cantilevered cylindrical shells under follower forces

Mohammad Ebrahim Torki Harchegani; Mohammad Taghi Kazemi

Volume 2, Issue 1 , Summer and Autumn 2012, , Pages 15-24


  Axial vibration effect of shell particles on dynamic stability of a cantilevered cylindrical shell under an axial follower force was addressed. In spite of free-ended shells, the reduced axial force under this effect cannot be derived analytically. Instead, an approximate method was proposed based on ...  Read More