The Effects of Energy Director Shape on Temperature Field during Ultrasonic Welding of Thermoplastic Composites

Jiu Chun Yan; Xiao Lin Wang; Rui Qi Li; Hui Bin Xu; Shi Qin Yang

doi:10.4028/www.scientific.net/KEM.353-358.2007

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The Effects of Energy Director Shape on Temperature Field during Ultrasonic Welding of Thermoplastic Composites

Abstract:

The ultrasonic welding process of thermoplastic composite with different shapes of energy director (ED) was simulated using finite element model. The results show that the highest temperature zone locates at the tip for the semicircular and triangular ones, and locates at the middle height for the trapezoid one. But it does not locate at the body of ED for the rectangular one. Energy director with different shapes lead to the temperature rising rate at different order of amplitude. The welding amplitude has same influence on the four shapes of ED. The temperature distributing profiles of semicircular, triangular and trapezoid ED keep constant from the initial welding time to that when the highest temperature on joints arrives the temperature of glass transformation (Tg), but the profile for rectangular ED changes greatly.

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Periodical:

Key Engineering Materials (Volumes 353-358)

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2007-2010

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https://doi.org/10.4028/www.scientific.net/KEM.353-358.2007

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Online since:

September 2007

Authors:

Jiu Chun Yan, Xiao Lin Wang, Rui Qi Li, Hui Bin Xu, Shi Qin Yang

Keywords:

Energy Director, Temperature Field, Thermoplastic Composite, Ultrasonic Welding

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