Effect of thermal stress on crack growth in inhomogeneous cylindrical superconductor

Zhao, Yirong; Liu, Hongshan; Xu, Chi

doi:10.1080/01495739.2018.1467742

Cited by 8 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because stainless steel is used in this simulation, there is no phase transition, and the phase transition strain increment is 0. For the thermo-elastoplastic model for calculating thermal stress, the strain increment is expressed by Equation (6).…”

Section: Mathematical Modelmentioning

confidence: 99%

“…However, during the quenching process of hot-rolled seamless steel tubes, due to the cooling difference between the inner and outer walls, there is a large temperature gradient in thickness, which leads to internal thermal stress. When the stress exceeds the yield intensity of the steel tube, problems occur, such as bending, cracking, or ellipticity changes, which seriously affect product quality [5,6]. In addition, the distribution of residual stress is greatly related to the shape.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quenching Stress of Hot-Rolled Seamless Steel Tubes under Different Cooling Intensities Based on Simulation

Rui

Chen

Quan

et al. 2022

Metals

View full text Add to dashboard Cite

Large residual stress occurs during the quenching process of hot-rolled seamless steel tubes, which results in bending, cracking, and ellipticity exceeding standards and seriously affects the quality of hot-rolled seamless steel tubes. In addition, the stress generation mechanism of hot-rolled seamless steel tubes is different from that of steel plates due to the characteristics of annular section. In this research, the finite element simulation method was used to study the quenching residual stress of seamless steel tubes with different cooling intensities. The variation law of temperature and stress on the steel tube under different cooling intensities were analyzed. The results show that the radial stress was close to 0, and the circumferential and axial stresses were the main factors affecting the quality of the steel tube. With the increase in the cooling time, the magnitude and direction of each stress component of the steel tube changed simultaneously. Finally, a typical stress distribution state of “external compressive stress, internal tensile stress” was presented in the thickness direction of the steel tube. Furthermore, with the increase in the cooling intensity, the residual stress of the steel tube gradually increased and was mainly concentrated on the near wall of the steel tube.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%