A Study of Multiple Laser Shock Micro-Adjustment Using Numerical Simulation

Di Zhang; Chun Xing Gu; Jun Wei Yuan; Zong Bao Shen; Hui Xia Liu; Xiao Wang

doi:10.4028/www.scientific.net/KEM.621.25

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 621A Study of Multiple Laser Shock Micro-Adjustment...

A Study of Multiple Laser Shock Micro-Adjustment Using Numerical Simulation

Abstract:

Laser shock micro-adjustment is a precise and noncontact adjustment technique using laser-shock-waves to adjust the curvature of micro-components. The experimental studies have indicated that: when laser shock region is located at the free end of cantilevers, multiple impacts are applied to achieve a large bending degree; meanwhile, different bending directions can be obtained with multiple impacts in the junction position. Efforts should been made to understand the mechanisms of multiple laser shock micro-adjustment. Two mechanisms have been proposed for describing the laser shock micro-adjustment in different laser shock regions, namely shock inertia mechanism and material flow mechanism. The proposed micro-adjustment mechanisms can predict bending angles and directions. To validate the proposed micro-adjustment mechanisms, numerical simulations were carried out based on the FEM method using the ANSYS/LS-DYNA software and the corresponding results demonstrate the proposed mechanisms.

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Periodical:

Key Engineering Materials (Volume 621)

Pages:

25-31

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.621.25

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Online since:

August 2014

Authors:

Di Zhang, Chun Xing Gu, Jun Wei Yuan, Zong Bao Shen, Hui Xia Liu, Xiao Wang

Keywords:

Laser Impact, Material Flow Mechanism, Micro-Adjustment, Numerical Simulation, Shock Inertia Mechanism

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