Vibration characteristics analysis of pipe with a part-through straight front crack
Hu JiaShun1 ; Feng Xin2 ; Zhou Jing2
1. Research Department of Safety Technology, CNPC Research Institute of Safety & Environment Technology, Beijing, 100083, China2. The State key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 110624, China
Abstract：Abstract: The local flexibility equations of the pipe with a crack that straight front and part-through-the-thickness subjected to axial force, shearing force and bending moment were derived by using of theories of linear fracture mechanics and stress energy release principle. An adaptive Simpson quadrature-revisted was used to perform the numerical integration to obtain the flexibility coefficients. These conquer the shortcoming that existing methods usually apply for calculating special load or non-hollow structure. The model test results from Naniwadekar et al were used to validate the accuracy of the proposed local flexibilit. Moreover, a finite element model for cracked pipe was established to conduct the vibration analysis for cracked pipe-like structure. The vibration characteristics of a cantilever pipe and a simple support pipe were analyzed. The results show that crack location, crack severity all have influence on the natural frequencies of cracked pipe-like structure.
胡家顺;冯新;周晶. 含非贯穿直裂纹管道的振动特性分析[J]. , 2011, 30(4): 21-25.
Hu JiaShun;Feng Xin;Zhou Jing. Vibration characteristics analysis of pipe with a part-through straight front crack. , 2011, 30(4): 21-25.
2011, Vol. 30 
