Research output: Contribution to journal › Article › peer-review
The influence of counter-body stiffness on working parameters of NiTi actuator. / Sibirev, A.; Belyaev, S.; Resnina, N.
In: Sensors and Actuators, A: Physical, Vol. 319, 112568, 01.03.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The influence of counter-body stiffness on working parameters of NiTi actuator
AU - Sibirev, A.
AU - Belyaev, S.
AU - Resnina, N.
N1 - Funding Information: This research was supported by Russian Science Foundation (grant number 19-79-00106 ). Publisher Copyright: © 2021 Elsevier B.V. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/3/1
Y1 - 2021/3/1
N2 - The influence of the counter-body stiffness on the recovery stress, recoverable strain and work output variations during the thermal cycling of NiTi cylindrical samples in the actuator regime has been studied. Pre-deformed samples were connected by one side to a pendulum dynamometer with variable stiffness, which played the role of elastic counter-body, and the other sample side was fixed. Two schemes of pre-deformation under torsion mode were used: active deformation in martensite state, or cooling under constant stress. It was shown that the shape memory effect and recovery stress value depended non-linearly on stiffness values. Work output was calculated for all samples. The optimal interval of stiffness, which provided maximum output, was found in both preliminary deformation schemes used. It was shown that for samples deformed by cooling under constant stress, the values of shape memory effect, maximum recovery stress and work output were higher than for the samples pre-deformed in the martensite state. The shape memory effect, maximum recovery stress and work output values decreased on thermal cycling.
AB - The influence of the counter-body stiffness on the recovery stress, recoverable strain and work output variations during the thermal cycling of NiTi cylindrical samples in the actuator regime has been studied. Pre-deformed samples were connected by one side to a pendulum dynamometer with variable stiffness, which played the role of elastic counter-body, and the other sample side was fixed. Two schemes of pre-deformation under torsion mode were used: active deformation in martensite state, or cooling under constant stress. It was shown that the shape memory effect and recovery stress value depended non-linearly on stiffness values. Work output was calculated for all samples. The optimal interval of stiffness, which provided maximum output, was found in both preliminary deformation schemes used. It was shown that for samples deformed by cooling under constant stress, the values of shape memory effect, maximum recovery stress and work output were higher than for the samples pre-deformed in the martensite state. The shape memory effect, maximum recovery stress and work output values decreased on thermal cycling.
KW - NiTi
KW - Shape memory actuator
KW - Shape memory alloys
KW - Stiffness
KW - Thermal cycling
KW - RECOVERY STRESS GENERATION
KW - TRANSFORMATION
KW - BEHAVIOR
KW - SHAPE-MEMORY ALLOYS
KW - ACCUMULATION
KW - RESIDUAL STRAIN
KW - WIRE
UR - http://www.scopus.com/inward/record.url?scp=85099866855&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2021.112568
DO - 10.1016/j.sna.2021.112568
M3 - Article
AN - SCOPUS:85099866855
VL - 319
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
SN - 0924-4247
M1 - 112568
ER -
ID: 73503537