Numerical Study of Laser Shock Peening Effects on Alloy 600 Nozzles with Initial Residual Stresses

Ji Soo Kim, Hyun Suk Nam, Yun Jae Kim, Ju Hee Kim

研究成果: Article査読

8 被引用数 (Scopus)

抄録

This paper investigates the effect of initial residual stress and prestrain on residual stresses due to laser shock peening for Alloy 600 using numerical simulation. For simulation, the strain rate dependent Johnson-Cook hardening model with a Mie-Grüneisen equation of state is used. Simulation results are compared with published experimental data, showing good agreement. It is found that the laser shock peening (LSP) process is more effective for higher initial tensile residual stress and for larger initial prestrain in terms of compressive stress at the near surface. However, the effective depth decreases with increasing initial tensile residual stress and initial prestrain.

本文言語English
論文番号041406
ジャーナルJournal of Pressure Vessel Technology, Transactions of the ASME
139
4
DOI
出版ステータスPublished - 2017 8 1
外部発表はい

ASJC Scopus subject areas

  • 安全性、リスク、信頼性、品質管理
  • 材料力学
  • 機械工学

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