Functional properties of TiNi conical working elements in the holding and release device
Functional properties of conical working elements of the holding and release device for space application needed to control the device were investigated. The elements had 45 mm in diameter, 11 mm in height and 2 mm in thickness, and were made of TiNi shape memory alloy with characteristic temperatures of martensitic transformations Mf = 30^oC; Ms = 45^oC; As =55^oC; Af = 75^oC. Constraint forces and displacement recovery of the conical working elements as functions of the temperature were obtained. It was found that the friction loss for two conical elements put one in the other one reach 15%. A simple graphical method to evaluate the displacement recovery and constraint forces of such conical working elements needed to control the device is proposed.
CYBERNETICS AND PHYSICS, Vol. 7, No. 4. 2018, 216-219.