• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2021, Vol. 57 ›› Issue (16): 16-36.doi: 10.3901/JME.2021.16.016

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Development and Application of Multiaxial Testing Technique

NING Zuoliang1,2, CHEN Gang1,2, CHEN Xu1,2   

  1. 1. Tianjin Key Laboratory of Chemical Safety and Equipment Technology, Tianjin 300350;
    2. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350
  • Received:2020-10-09 Revised:2021-08-11 Online:2021-08-20 Published:2021-11-16

Abstract: Compared with conventional uniaxial mechanical tests,more comprehensive mechanical properties of materials under complex stress conditions can be obtained or more accurate assessment of the life and failure mechanism of structural parts can be made through multiaxial tests. With the advance of control and measurement technology,multiaxial testing technology has developed rapidly. In the past 30 years,a lot of research on the fatigue,fracture,stamping performance,anisotropic behaviour,micro deformation mechanism of materials has been conducted by scholars at home and abroad through designing various multiaxial tests,making multiaxial test an increasingly important testing method across various disciplines. Considering samples' complicated stress state and easy occurrence of stress concentration during multiaxial tests,finite element analysis can be utilized as an effective method to obtain the stress and strain distribution and optimize the form of samples or structures. According to the difference of loading form and specimen,test methods,development history and application in different fields of four kinds of multiaxial tests:tension-torsion multiaxial test,in-plane biaxial test,tension/compression-pressure combined test,soil triaxial test are introduced; taking ring-shaped specimen tension/compression test and Erichson test as examples,the multiaxial test method based on finite element analysis is introduced; taking the multiaxial test method of automobile engine components as an example,the application of multiaxial test in the design and life assessment of structural parts is introduced.

Key words: multiaxial test, tension-torsion, cruciform specimen, multiaxial fatigue, ring specimen

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