Volume 55 (2023)
Volume 54 (2022)
Volume 53 (2021)
Volume 52 (2020)
Volume 51 (2019)
Volume 50 (2018)
Volume 49 (2017)
Volume 48 (2016)
Volume 47 (2016)
Volume 46 (2015)
Volume 45 (2014)
Volume 44 (2013)
Volume 43 (2009)
Volume 41 (2007)
بررسی تأثیر دما و طول اواپراتور و تعداد خم‌‌های لوله حرارتی ضربانی در عملکرد آن

Hossein Shokouhmand; Hafez Bahrami

Volume 42, Issue 1 , April 2008, Pages 77-86

https://doi.org/10.22059/jac.2013.7730

Abstract
  In this study an analytical model for open loop pulsating heat pipes (PHPs) is presented. The model predicts the effect of different parameters such as evaporator temperature, length of evaporator, filling ratio, number of turn and tube diameter on PHP's performance. The governing equations in two phase ...  Read More

استفاده از روش غنی شده بدون شبکه گلرکین در تعیین پارامتر های شکست صفحات FGM

Farzad Ebrahimi; Mohammad Hassan Naei

Volume 42, Issue 1 , April 2008, Pages 107-118

https://doi.org/10.22059/jac.2013.7731

Abstract
  Stress-intensity factors (SIFs) are the most important parameters in fracture mechanics analysis of structures. These parameters are evaluated for a stationary crack in functionally graded plates of arbitrary geometry using a novel Galerkin based mesh-free method. The method involves an element-free ...  Read More

شناسایی سیستم و طراحی کنترل بهینه با استفاده از الگوریتم ژنتیک برای کنترل ارتعاشات یک بال هوشمند

Hossein Shahi; Aghil Yousefikoma; Ali Reza Mehrabian

Volume 42, Issue 1 , April 2008, Pages 119-130

https://doi.org/10.22059/jac.2013.7732

Abstract
  A solution to the problem of identification and control of smart structures is presented in this paper. Smart structures with build-in sensors and actuators can actively and adaptively change their physical geometry and properties. As a particular example, a representative dynamic model of a typical ...  Read More

بررسی تعادل شبکه های کابلی الاستیک خطی با استفاده از کمینه سازی انرژی پتانسیل

Ali Asghar Atai; Masoud Shariat Panahi; Kave Ebrahimi

Volume 42, Issue 1 , April 2008, Pages 87-96

https://doi.org/10.22059/jac.2013.7733

Abstract
  Cables have always been under consideration as a structural element because of important features such as large strength to weight ratios and long spans. Their equilibrium analysis is an important issue in this regard. But this analysis involves highly nonlinear equations arising from large deformations ...  Read More

تحلیل شکل‌دهی انفجاری و بدونِ قالب ورق‌های مدورِ دولایه با استفاده از اصل پایستاری انرژی

Gholam Hossein Liaghat; Saeed Zargar Azad

Volume 42, Issue 1 , April 2008, Pages 97-106

https://doi.org/10.22059/jac.2013.7734

Abstract
  Die less explosive forming of circular plates is one of the most useful methods in the industries especially chemical applications. Manufacturing of large vessel's head, multilayer rings and some parts of heat exchangers are the example of applying this method. Many theoretical and experimental researches ...  Read More

اکستروژن سه بعدی به روش میدان خطوط لغزش

Caren Abrinia; Rahim Tahriri Masoule

Volume 42, Issue 1 , April 2008, Pages 1-13

https://doi.org/10.22059/jac.2013.7735

Abstract
  Many metal forming problems have been solved using the slip line field method but all of them have either been two-dimensional (plane strain or plain stress) or axisymmetric problems. In this paper a procedure has been proposed by which the slip line field solution to three dimensional problems of metal ...  Read More

بررسی روشهای تولید نانو تیوب های کربنی و انتخاب بهترین روش ساخت مناسب با استفاده از روش تصمیم گیری چند معیاره

Mohammad Kazem Besharati Givi; Akbar Afaghi Khatibi; Mansour Akbari

Volume 42, Issue 1 , April 2008, Pages 49-63

https://doi.org/10.22059/jac.2013.7736

Abstract
  Evidence from the early and late industrializes shows that technology, as the commercial application of scientific knowledge, has been a major driver of industrial and economic development. International technology transfer is now being recognized as having played an important role in the development ...  Read More

تحلیل تجربی و عددی انتقال حرارت جابجایی آزاد از روی صفحه موجی شکل درون یک کانال عمودی

Mehdi Ashjaee; Hossein Shokouhmand; Mehdi Amiri; Touraj Yousefi

Volume 42, Issue 1 , April 2008, Pages 39-48

https://doi.org/10.22059/jac.2013.7738

Abstract
  Laminar free convection heat transfer from vertical and inclined arrays of horizontal isothermal cylinders in air was investigated experimentally and numerically. Experiments were carried out using Mach-Zehnder interferometer and the FLUENT code was used for numerical study. Investigation was performed ...  Read More

ررسی تجربی افت فشار جریان جوششی مبرد R-134a در لوله‌های افقی

Mohammad Ali Akhavan Behabadi; Hossein Shokouhmand; Masoud Jamali Ashtiani; Amir Mohammadpour

Volume 42, Issue 1 , April 2008, Pages 31-38

https://doi.org/10.22059/jac.2013.7739

Abstract
  The pressure drop of refrigerant R-134a flow boiling inside a horizontal tube has been investigated experimentally. The test set-up which was used in this investigation is a well instrumented vapor compression refrigeration system. These instruments are thermocouples, flow meter, pressure gauges and ...  Read More

همکاری رباتها در جابجایی جسم نامعین توسط کنترلر امپدانسچندگانه

Farzad Gheraghpour Samavati; Seyyed Ali Akbar Moosavian

Volume 42, Issue 1 , April 2008, Pages 65-76

https://doi.org/10.22059/jac.2013.7740

Abstract
  Parameter identification techniques are particularly attractive to determine the inertial parameters of robot manipulators and manipulated payloads. These parameters are particularly needed in implementation of a model-based controller for robot manipulators. In this paper, the inertial parameters of ...  Read More

Exergy Optimization Applied to Linear Parabolic

Ahmad Kahrobaian; Hamid Reza Malekmohammadi

Volume 42, Issue 1 , April 2008, Pages 131-144

https://doi.org/10.22059/jac.2013.7741

Abstract
  A new method of optimization on linear parabolic solar collectors using exergy analysis is presented. A comprehensive mathematical modeling of thermal and optical performance is simulated and geometrical and thermodynamic parameters were assumed as optimization variables. By applying a derived expression ...  Read More