Influence of beam intensity distribution on the thermal and mechanical behavior of cylindrical shells under laser irradiation
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Received Date:
2009-09-30
Accepted Date:
2010-02-21
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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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References
[1]
|
SUN C W.Laser irradiation effect[M].Beijing:National Defense Industry Press,2002:242-254(in Chinese). |
[2]
|
CHEN Y Z,LI S Zh.Buckling failure of the axially compressed cylindrical shell irradiated by CW CO2 laser beam[J].High Power Laser and Particle Beams,1995,7(3):404-408(in Chinese). |
[3]
|
LI S,CHEN Y,ZHANG G J,et al.The failure of shells subjected to internal pressure and irradiated by CW CO2 laser beam[C]//Plasmadynamics and Lasers Conference,25th.Colorado Springs,CO,USA:AIAA,1994:2641-2646. |
[4]
|
ZHAO J H,ZHANG G R,LIU X F.The deformation numerical simulation of internally pressured cylinder shell under high power laser[J].Chinese Journal of High Pressure Physics,1996,10(4):262-268(in Chinese). |
[5]
|
ZHAO J H,SUN Ch W,LI S Zh.Fractographic analysis of aluminum cylindrical shells damaged by inner pressure and surface laser irradiation[J].High Power Laser and Particle Beams,1998,10(1):113-117(in Chinese). |
[6]
|
TAN F L,ZHAO J H,LI Y Ch.Probability analysis on thermal fracture of the internally pressured cylinder shell irradiated by laser[J].High Power Laser and Particle Beams,2004,16(8):977-980(in Chinese). |
[7]
|
WANG W P,LÜ B D,LUO Sh R.Influence of laser spacial profile on laser heating material[J].High Power Laser and Particle Beams,2001,13(3):313-316(in Chinese). |
[8]
|
The Editing Committee of Engineering Material Application Manual.Engineering material applied manual[M].Beijing:Chinese Metrology Press,1988:208-232(in Chinese). |
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Proportional views
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