Volume 18, Issue 5 (2018)                   Modares Mechanical Engineering 2018, 18(5): 24-30 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

abbasnia A, Jaffari M, Rohani A. Estimation of stress concentration factor of circular hole in orthotropic plate using a new model based on regression method. Modares Mechanical Engineering. 2018; 18 (5) :24-30
URL: http://journals.modares.ac.ir/article-15-16896-en.html
1- Department of Mechanical Engineering, Shahrood University, Shahrood, Iran
2- Department of bio systems engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract:   (753 Views)
One of the concerns of designers of engineering structures is structural failure due to stress concentration caused by geometric discontinuities in the structures. Therefore, by considering that perforated composite plates are used in most engineering structures, their study is very important. The purpose of this paper is to present a new model based on the regression method for estimating stress concentration factor of a circular hole in orthotropic plates. One of the important applications of providing stress distribution around holes in terms of mechanical properties is the use of these relationships in the stress analysis of perforated viscoelastic plate using the effective modulus method or Boltzmann's superposition principle. First, using different values of the mechanical properties of the composites plates, and employing an analytical solution based on the complex variable method, the stress concentration factor of circular hole is calculated for a number of these materials. Then, using multiple linear regression, an explicit expression for the stress concentration factor is given in terms of mechanical properties. The results show that the multiple regression model is able to predict the circumferential stress with a maximum error of less than 1%.
Full-Text [PDF 3841 kb]   (148 Downloads)    
Article Type: Research Article |
Received: 2018/01/16 | Accepted: 2018/03/4 | Published: 2018/09/24

Add your comments about this article : Your username or Email:
CAPTCHA