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Volume 34 Issue 5
Oct.  2010
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Citation:

Influence of beam intensity distribution on the thermal and mechanical behavior of cylindrical shells under laser irradiation

  • Received Date: 2009-09-30
    Accepted Date: 2010-02-21
  • The research of the failure mechanism of load-carrying construction under high-power laser irradiation can expand the field of laser application.In order to investigate the influence of beam intensity distribution on the thermal-mechanical behavior of cylindrical shells under laser irradiation, firstly the thermal-mechanical model of the cylindrical shell was constructed by means of finite element method. Taking total laser power equal, several typical distributions were analyzed and compared. Then thermal-mechanical response of the internal pressured cylindrical shell under different laser irradiation was studied. Numerical results indicate that intensity distribution has a significant effect on temperature, stress and displacement fields of cylindrical shell. The cylindrical shells irradiated by laser beams with different intensity have different failure mode and failure time.
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Influence of beam intensity distribution on the thermal and mechanical behavior of cylindrical shells under laser irradiation

  • 1. Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China

Abstract: The research of the failure mechanism of load-carrying construction under high-power laser irradiation can expand the field of laser application.In order to investigate the influence of beam intensity distribution on the thermal-mechanical behavior of cylindrical shells under laser irradiation, firstly the thermal-mechanical model of the cylindrical shell was constructed by means of finite element method. Taking total laser power equal, several typical distributions were analyzed and compared. Then thermal-mechanical response of the internal pressured cylindrical shell under different laser irradiation was studied. Numerical results indicate that intensity distribution has a significant effect on temperature, stress and displacement fields of cylindrical shell. The cylindrical shells irradiated by laser beams with different intensity have different failure mode and failure time.

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