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Abstract:
The
relationships among stress, strain, temperature and phase transformation
of Cu-based shape memory alloy spring are investigated. The experimental
results and their mechanisms are systematically analyzed. The results
show that the relationships about stress-strain, stress-temperature and
strain-temperature of SMA helical spring in the three basic application
forms are non-linear, and Hooke’s law can not be directly used in
design. Experimental results are very useful to reveal the actuating
behaviors and to design actuators of SMA spring.
Key words:
Shape
memory alloy Actuator Thermomechanical property
Measure
CLC No: TG139
江苏省自然科学基金资助项目和南通市中青年科技学术带头人课题研修项目. Received 20000529,
received in revised form 20010105
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