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Journal of Vibration Testing and System Dynamics

C. Steve Suh (editor), Pawel Olejnik (editor),

Xianguo Tuo (editor)

Pawel Olejnik (editor)

Lodz University of Technology, Poland


C. Steve Suh (editor)

Texas A&M University, USA


Xiangguo Tuo (editor)

Sichuan University of Science and Engineering, China


On the Analytical Modeling of a Resonant Fatigue Testing Rig

Journal of Vibration Testing and System Dynamics 4(4) (2020) 389--399 | DOI:10.5890/JVTSD.2020.12.007

Leilei Chen$^{1}$, Siyuan Xing$^{2}$, Xingzhong Xiong$^{1}$

$^{1 }$ Department of Automation and Information Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, 643000, China

$^{2 }$ Department of Mechanical Engineering, California Polytechnic State University-San Luis Obispo, San Luis Obispo, CA, 93401, USA

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The drill string is a common rotating structure extensively used in oil exploration and production. The drill string fails under the long-term action of internal and external pressure, axial force, bending stress and torque in the drilling process. In order to facilitate the study of fatigue life of pipe joints, a light-structural and cost-and-time, efficient resonant bending fatigue test scheme is adopted, an analytical resonant bending fatigue test model is established, and the relationship between the parameters such as pipe length and the natural frequency of the sample is explored. The natural frequency and the zero-displacement position of the first mode of the test sample are predicted. The location of the moving point, the central bending moment and the corresponding normal stress can be used to predict if the test requirements are satisfied.


This work is fully supported by the Major Frontier Project of Science and Technology Plan of Sichuan Province (No. 2018JY0512)


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