tailieunhanh - A novel numerical approach for fracture analysis in orthotropic media

This paper presents a novel approach for fracture analysis in two-dimensional orthotropic domain. The proposed method is based on consecutive-interpolation procedure (CIP) and enrichment functions. | 5 TẠP CHÍ PHÁT TRIỂN KH&CN, TẬP 20, SỐ K2-2017 A novel numerical approach for fracture analysis in orthotropic media Nguyen Ngoc Minh, Nguyen Thanh Nha, Bui Quoc Tinh, Truong Tich Thien Abstract — This paper presents a novel approach for fracture analysis in two-dimensional orthotropic domain. The proposed method is based on consecutive-interpolation procedure (CIP) and enrichment functions. The CIP were recently introduced as an improvement for standard Finite Element method, such that higher-accurate and higher-continuous solution can be obtained without smoothing operation and without increasing the number of degrees of freedom. To avoid re-meshing, the enrichment functions are employed to mathematically describe the jump in displacement fields and the singularity of stress near crack tip. The accuracy of the method for analysis of cracked body made of orthotropic materials is studied. For that purpose, various examples with different geometries and boundary conditions are considered. The results of stress intensity factors, a key quantity in fracture analysis, are validated by comparing with analytical solutions and numerical solutions available in literatures. Index Terms — consecutive-interpolation procedure, crack analysis, enrichment functions, orthotropic materials, stress intensity factor 1 INTRODUCTION T hanks to its specific high strength and stiffness per unit weight, orthotropic Manuscript Received on July 13th, 2016. Manuscript Revised December 06th, 2016. We are grateful to the valuable discussion with colleagues in Department of Engineering Mechanics on this work. This research is funded by Ho Chi Minh City University of Technology – VNU-HCM under grant number TNCS-KHUD2016-08. Nguyen Ngoc Minh, Nguyen Thanh Nha, Truong Tich Thien are with Department of Engineering Mechanics, Faculty of Applied Sciences, Ho Chi Minh City University of Technology, VNU-HCM. Bui Quoc Tinh is

• Vật lý
• A novel numerical approach
• Fracture analysis in orthotropic media
• Consecutive interpolation procedure
• Two dimensional orthotropic domain
• Stress intensity factor