Study on the Mechanism of Cutting Fracture of H700X300 H-Beam

Abstract:

In order to find the crack reason of H700X300 H-beam rolled in air-cooling conditions, finite element analysis has been used to study the cutting process. Find that the R position existed serious stress collection when cutting to the central of the web in the cutting process. The stress is three-dimensional stress, and each is tensile stress. It is accord with the Q235 steel brittle fracture law. So the conclusion can be draw, the reason of H700X300 H-beam occur cut fracture is for exist crack, stomata and other defects in the stress collection position. The experiment testify the conclusion

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 3603-3607
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.3603
• Online since: March 2012
• Authors: Jian Qin Zhao, Shu Qin Xu
• Keywords: Brittle Fracture, Crack, Finite Element, Residual Stress, Stress Collection

References

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