An Investigation on Random Fatigue Strength of K-Type Tubular Joints and Crack Propagation Behaviors

NIE Guo-hua; ZHANG Ruo-jing; LIU Ren-huai

Article Contents

Article Navigation > Applied Mathematics and Mechanics > 2001 > 22(6): 572-578

NIE Guo-hua, ZHANG Ruo-jing, LIU Ren-huai. An Investigation on Random Fatigue Strength of K-Type Tubular Joints and Crack Propagation Behaviors[J]. Applied Mathematics and Mechanics, 2001, 22(6): 572-578.

Citation:

PDF( 277 KB)

An Investigation on Random Fatigue Strength of K-Type Tubular Joints and Crack Propagation Behaviors

1.
Key Laboratory of Solid Mechanics of MOE, Tongji University, Shanghai 200092, P R China;
2.
Institute of Applied Mechanics, Jinan University, Guangzhou 510632, P R China

Received Date: 2000-01-28
Rev Recd Date: 2000-11-21
Publish Date: 2001-06-15

Abstract

Abstract

Random fatigue of welded K-type tubular joints subjected to axial or out-of-plane bending load is analyzed.By considering the sizes of initial surface cracks and material constants as random variables with some probabilistic distributions,incorporating the effect of the weld,five hundred random samples are generated.Statistical computational results of life of crack propagation and effect of change of crack shape are finally obtained and compared with experimental data available based on a regression analysis.Meanwhile,crack propagation behaviors are also investigated.
- K-type tubular joints,
- random fatigue,
- surface crack,
- life of propagation,
- fracture mechanics

FullText(HTML)

References(16)

References

[1]	Dover W D, Holdbrook S J, Hibberd R D, et al. F atigue crack growth in T joints; out-of-plane bending[A]. Proc OTC[C]. Paper 3252, Houston: Taxas, 1978.
[2]	Dover W D, Chaudhury G K, Dharmavasan S. Experimental and finite element comparisons of local stresses and compliance in tubular welded T joints[A]. Proc Int Conf on Steel in Marine Structure[C]. Paper No.4.3,Paris,1981.
[3]	Gibstein M B. Fatigue strength of welded tubular joints tested at detnorske veritas laboratories[A]. Proc Int Conf on Steel in Marine Structures[C]. Paper No 8.4,Paris,1981.
[4]	Clayton A M. Assessment of UKOSRP crack growth data to investigate the remaining life of offshore structures after inspection[R]. UKAEA, Report No ND-R-852(R),HSMO,London,1982.
[5]	Paris P, Erdogan F. A critical analysis of crack propagati on laws [J]. Journal of Basic Engineering, Trans ASME,1963,85:528-534.
[6]	Aamodt B. Application of finite element method to problems in linear and nonlinear fracture mechanics[D]. Dr-Ing thesis. Trondheim, Norway: The Norwegian Institute of Technology,1974.
[7]	Newman J C, Raju I S. An empirical stress-intensity factor equation for the surface crack[J]. Engineering Fracture Mechanics,1981,15 (1-2):185-192.
[8]	Shang-Xian W. Shape change of surface crack during fatigue growth [J]. Engineering Fracture Mechanics,1985,22(5):897-913.
[9]	Delft D R V, Dijkstra O D, Snijder H H. The calculation of fatigue crack growth in welded tubular joints using fracture mechanics[A]. Proc OTC [C]. Paper 5352,Houston: Taxas,1986.
[10]	张延宏,柳春图,梅红. 管节点疲劳寿命估算的统计分析方法[J]. 海洋工程,1990,8(4):15-23.
[11]	Nie G H, Weng Z Y. A random numerical simulation analysis of fatigue strength of tubular joints in offshore platforms[A]. Proc of Int Conf on Comp Meth in Struct and Geotech Engng[C]. Hong Kong: The University of Hong Kong,1994,1226-1231.
[12]	聂国华,翁智远,刘人怀. 用概率断裂力学方法预测管状接头的疲劳寿命 [J]. 应用数学和力学,1994,15(11):963-969.
[13]	Lawrence F V, Ho N J, Mazumdar P K. Predicting the fatigue resistance of welds[J]. Ann Rev Mater Sci,1981,11:401-425.
[14]	Dijkstra O D, Snijder H H, Overbeeke J L, et al. Prediction of fatigue crack growth for welded joints using stress intensity factors determined by FEM calculations[A]. Steel in Marine Structures[C]. Amsterdam: The Netherlands,1987,885-899.
[15]	Wylde J G, McDonald A. The influence of joint dimensions on the fatigue strength of welded tubular joints[A]. Proceedings of the Second Inter national Conference on Behavior of Off-Shore Structures[C]. London: England, 1979,535-550.
[16]	McDonald A, Wylde J G. Experimental Results of Fatigue Tests on Tubular Welded Joints, Fatigue in Off-Shore Structural Steels[M]. London,England: Thomas Telford Ltd,1981,89-100.