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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. 11 — Nov. 10, 2007
  • pp: 654–656

Numerical simulation of filler metal droplets spreading in laser brazing

Yanbin Chen, Xiaosong Feng, and Liqun Li  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue 11, pp. 654-656 (2007)


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Abstract

A finite element model was constructed using a commercial software Fidap to analyze the Cu-base filler metal droplet spreading process in laser brazing, in which the temperature distribution, droplet geometry, and fluid flow velocity were calculated. Marangoni and buoyancy convection and gravity force were considered, and the effects of laser power and spot size on the spreading process were evaluated. Special attention was focused on the free surface of the droplet, which determines the profile of the brazing spot. The simulated results indicate that surface tension is the dominant flow driving force and laser spot size determines the droplet spreading domain.

© 2007 Chinese Optics Letters

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(350.3390) Other areas of optics : Laser materials processing

Citation
Yanbin Chen, Xiaosong Feng, and Liqun Li, "Numerical simulation of filler metal droplets spreading in laser brazing," Chin. Opt. Lett. 5, 654-656 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-11-654


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References

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