TY - JOUR ID - 15331 TI - Multiple Moving Cracks in a Nonhomogeneous Orthotropic Strip JO - Iranian Journal of Mechanical Engineering Transactions of the ISME JA - JMEE LA - en SN - 1605-9727 AU - Bagheri, R. AU - Ayatollahi, M. AU - Rahmani, O. AD - Ph.D Student ,Faculty of Engineering, University of Zanjan AD - Mechanical Engineering, University of Zanjan, AD - Mechanical Engineering, University of Zanjan Y1 - 2013 PY - 2013 VL - 14 IS - 1 SP - 17 EP - 32 KW - Crack propagation KW - Non-homogeneous orthotropic material KW - Dynamic stress intensity factor KW - Strain energy density factor DO - N2 - The problem of several finite moving cracks in a functionally graded material is solved by dislocation technique under the condition of anti-plane deformation. By using the Fourier transform the stress fields are obtained for a functionally graded strip containing a screw dislocation. The stress components reveal the familiar Cauchy singularity at the location of dislocation. The solution is employed to derive integral equations for a strip weakened by several moving cracks. Numerical examples are provided to show the effects of material properties, the crack length and the speed of the crack propagating upon the stress intensity factor and strain energy density factor. UR - https://jmee.isme.ir/article_15331.html L1 - https://jmee.isme.ir/article_15331_badd062e6d3741d855cc8edaa80ffbdb.pdf ER -