Analysis of Cylindrical SMA Fan Clutch

Abstract:

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This paper presents a cylindrical Shape memory alloy (SMA) fan clutch for automobile cooling system application. The resilience of pre-strain 2% SMA alloy wire is analyzed in the processes of heating and cooling. The Design method of SMA helical spring is described. The expression of transmission torque provided by SMA spring is established. The relationship between transmission torque and temperature is analyzed in detail. The results indicate that the transmission torque increases gradually with the increasing of airflow temperature and decreases with the decreasing of airflow temperature, respectively. The cylindrical SMA fan clutch has the property that its transmission torque changes rapidly according to the temperature of airflow from radiator.

Info:

Periodical:

Advanced Materials Research (Volumes 148-149)

Edited by:

Xianghua Liu, Zhengyi Jiang and Jingtao Han

Pages:

1643-1647

DOI:

10.4028/www.scientific.net/AMR.148-149.1643

Citation:

J. M. He et al., "Analysis of Cylindrical SMA Fan Clutch", Advanced Materials Research, Vols. 148-149, pp. 1643-1647, 2011

Online since:

October 2010

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Price:

$35.00

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