Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Effect of LSP Process Parameters Using Dimensionless Analysis

무차원 변수 해석을 이용한 LSP 공정변수 영향 분석

  • Received : 2013.04.16
  • Accepted : 2013.06.13
  • Published : 2013.09.01
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Abstract

Dimensional analysis is an important tool for developing mathematical models of physical phenomena in order to understand the effects of laser shock peening(LSP) process parameters. By using the Bucking ${\prod}$ theorem, we proposed an applicable dimensional analysis method to verify the effects of LSP process parameters on the residual stresses. Furthermore, by using finite element analysis, we proposed a finite element method of LSP and discussed various parameters, such as peak pressure, pressure pulse duration, laser spot size, and multiple LSPs.

복잡한 물리적 현상에 대한 수학적 모델을 만들기 위해 적용되는 차원해석은 LSP 공정변수의 영향을 이해하는데 중요한 도구가 된다. 본 연구에서는 버킹검(Buckingham) ${\prod}$이론을 이용한 차원해석을 통해 레이저 충격 피닝의 잔류응력 결과에 영향을 미치는 변수를 확인하고, 유한요소법을 이용하여 LSP 공정변수인 최대압력파, 압력파 지속시간, 레이저 샷 크기 및 다중 LSP 에 대한 잔류응력 결과를 확인하였다.

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References

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