Analytical Solution for Single and Multiple impacts with Strain-rate Effects for Shot Peening

Shot peening is a complex and random process which is controlled by many input parameters. Numerical methods, which are normally used for impact problems will prohibitively put strain on the computing resources since a large number of impacts are involved in the computations. In this paper, a simpli...

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Bibliographic Details
Published in:Computer modeling in engineering & sciences 2010, Vol.57 (2), p.137-158
Main Authors: Baskaran Bhuvaraghan, Srinivasan, Sivakumar M, Maffeo, Bob, Prakash, Om
Format: Article
Language:English
Subjects:
Compressive properties
Computation
Computer simulation
Exact solutions
Mathematical analysis
Mathematical models
Monte Carlo methods
Monte Carlo simulation
Nickel base alloys
Numerical analysis
Numerical methods
Parameters
Random processes
Residual stress
Shot peening
Strain
Strain rate
Stress concentration
Stress distribution
Stresses
Superalloys
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Summary:Shot peening is a complex and random process which is controlled by many input parameters. Numerical methods, which are normally used for impact problems will prohibitively put strain on the computing resources since a large number of impacts are involved in the computations. In this paper, a simplified analytical approach is used to predict the residual compressive stress that includes strain-rate effects. This is based on the method proposed by with a simple modification to include the strain rate effects. The residual stresses are predicted in materials SAE1070 and Inco718. In the computations, the random variation of the input parameters are simulated to predict the residual stress variation using the Monte-Carlo method. The stress distributions computed using the analytical method compare well with the direct numerical methods and the experimental results.
ISSN:1526-1492
1526-1506
DOI:10.3970/cmes.2010.057.137