پديدآورندگان :
Nasrnia A Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Isfahan,
81746-73441, Iran , Haji Aboutalebi F f.hajiaboutalebi@eng.ui.ac.ir Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Isfahan,
81746-73441, Iran , Poursina M Department of Mechanical Engineering, Faculty of Engineering, University of Isfahan, Isfahan,
81746-73441, Iran
چكيده فارسي :
Crack initiation is an unfavorable phenomenon in engineering structures. Recently, different methods have been introduced to stop crack growth. One of the most common methods is to creating crack stop drill hole which done in three different types. Each of these types leads to variation in load carrying capacity. In the present research, squared plates containing crack with the different types of stop drill holes, made of Al3003-H16 are considered for conducting compact tension (CT) test at room temperature. In order to predict fracture loads, six different damage criteria based on extended finite elements method (XFEM) are employed and the numerical results are achieved. In the following, simulation results are compared with experimental results and validated. According to this comparison, it is concluded that the XFEM can successfully predict static strength of CT specimens. Also, the best and the worst crack stop drill hole methods are revealed by the both simulation and experimental methods.
