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An investigation of random fatigue strength of K-type tubular joints and crack propagation behaviors

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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.

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Authors and Affiliations

  1. Key Laboratory of Solid Mechanics of MOE, Tongji University, 200092, Shanghai, P R China

    Nie Guo-hua & Zhang Ruo-jing

  2. Institute of Applied Mechanics, Jinan University, 510632, Guangzhou, P R China

    Liu Ren-huai

Authors
  1. Nie Guo-hua
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  2. Zhang Ruo-jing
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  3. Liu Ren-huai
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Additional information

Paper from LIU Ren-huai, Member of Editorial Committee, AMM

Foundation item: the Key Speciality of the Shanghai Education Committee

Biography: NIE Guo-hua (1964- ), Professor, Doctor, Supervisor of Ph D Candidates

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Nie, Gh., Zhang, Rj. & Liu, Rh. An investigation of random fatigue strength of K-type tubular joints and crack propagation behaviors. Appl Math Mech 22, 642–649 (2001). https://doi.org/10.1007/BF02435663

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  • DOI: https://doi.org/10.1007/BF02435663

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