Design of a constant-force component using superelastic SMA

摘要

Clamping devices with constant force or pressure are desired in surgical operation to prevent soft tissues from injures due to overloading. This paper studied design issues in constant-force components using shape memory alloys (SMA). Numerical results show that the phenomenon of constant-force strongly depends on the initial shape and geometric dimensions of the SMA component. The relation between the internal stress distribution in SMA and displacement-force behavior is discussed.