TY - EJOU AU - Palani, G.S. AU - Iyer, Nagesh R. AU - Dattaguru, B. TI - Reliable Fracture Analysis of OF 2-D Crack Problems Using NI-MVCCI Technique T2 - Structural Durability \& Health Monitoring PY - 2005 VL - 1 IS - 2 SN - 1930-2991 AB - A posteriori error estimation and adaptive refinement technique for 2-D/3-D crack problems is the state-of-the-art. In this paper a new a posteriori error estimator based on strain energy release rate (SERR) or stress intensity factor (SIF) at the crack tip region has been proposed and used along with the stress based error estimator for reliable fracture analysis of 2-D crack problems. The proposed a posteriori error estimator is called the K-S error estimator. Further, h-adaptive mesh refinement strategy which can be used with K-S error estimator has been proposed for fracture analysis of 2-D crack problems. The performance of the proposed a posteriori error estimator and the h-adaptive refinement strategy have been demonstrated by employing 4-noded, 8-noded and 9-noded plane stress finite elements. The proposed error estimator together with the h-adaptive refinement strategy will facilitate automation of fracture analysis process to provide reliable solutions. KW - Finite element method KW - Fracture analysis KW - Error estimation KW - Adaptive refinements DO - 10.3970/sdhm.2005.001.107