Tuning the vibration of a rotor with shape memory alloy metal rubber supports

2015 ◽  
Vol 351 ◽  
pp. 1-16 ◽  
Author(s):  
Yanhong Ma ◽  
Qicheng Zhang ◽  
Dayi Zhang ◽  
Fabrizio Scarpa ◽  
Baolong Liu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Metal Rubber ◽  
Alloy Metal

The mechanics of shape memory alloy metal rubber

2015 ◽  
Vol 96 ◽  
pp. 89-100 ◽  
Author(s):  
Yanhong Ma ◽  
Qicheng Zhang ◽  
Dayi Zhang ◽  
Fabrizio Scarpa ◽  
Baolong Liu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Metal Rubber ◽  
Alloy Metal

Shape Memory Effect and Hysteresis Behavior of Shape Memory Alloy Metal Rubber

2012 ◽  
Author(s):  
Jie Hong ◽  
Baolong Liu ◽  
Dayi Zhang ◽  
Yanhong Ma
Keyword(s):  
Heat Treatment ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Storage Modulus ◽  
Loss Factor ◽  
Treatment Process ◽  
Structural Parameter ◽  
Treatment Procedure ◽  
Metal Rubber ◽  
Alloy Metal

The present work focuses on the shaping craft of shape memory alloy metal rubber (SMAMR) and its temperature dependent mechanical properties. Heat treatment process was conducted to form a stable SMAMR sample beyond the general procedure of metal rubber (MR) in order to resist the shape memory effect (SME). The influence of the heat treatment procedure on the mechanical properties was tested. The quasi-static experimental investigations were carried out to obtain the storage modulus and energy loss factor varying with the structural parameter, strain amplitude, and material temperature. It is found from the experiment results that the SMAMR sample which underwent the heat treatment was able to remember its original moulding shape and recover from the overloading plastic deformation when heated above the phase transition temperature. For comparison, another sample without the heat treatment was heated to the same temperature after the plastic deformation, but the final shape deviated from the original one. It is also confirmed that the heat treatment procedure obviously increased the storage modulus and loss factor of SMAMR. Just like the variety elastic modulus of shape memory alloy (SMA), the storage modulus of SMAMR increased obviously while the material was heated above the phase transformation temperature due to the elastic modulus change of SMA wire. The quasi-static experiments showed a hysteretic property of the stress–strain curve in a certain temperature. But the hysteretic curve was temperature and structural parameter dependent. It is concluded that the heat treatment process is necessary to obtain a stable SMAMR during the phase transformation. The varying storage modulus and superior loss factor performances of SMAMR make itself a kind of attractive functional material which will be available in the active suppression of vibration. For example, it can be fabricated to a rotor bearing with changeable stiffness and damping, which is of practical significance in the active control of synchronous vibration of rotors crossing resonance condition.

Experimental investigation on shape memory alloy metal rubber

2013 ◽  
Vol 56 (8) ◽  
pp. 1949-1955 ◽  
Author(s):  
YanHong Ma ◽  
HaiXiong Zhu ◽  
DaYi Zhang ◽  
BaoLong Liu ◽  
Jie Hong
Keyword(s):  
Experimental Investigation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Metal Rubber ◽  
Alloy Metal

A novel smart rotor support with shape memory alloy metal rubber for high temperatures and variable amplitude vibrations

2014 ◽  
Vol 23 (12) ◽  
pp. 125016 ◽  
Author(s):  
Yanhong Ma ◽  
Qicheng Zhang ◽  
Dayi Zhang ◽  
Fabrizio Scarpa ◽  
Baolong Liu ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
High Temperatures ◽  
Variable Amplitude ◽  
Rotor Support ◽  
Metal Rubber ◽  
Alloy Metal

Influence of the Manufacturing Process on Hot Extruded Shape Memory Alloy Metal Matrix Composites

2018 ◽  
Author(s):  
C. Dahnke ◽  
A. E. Tekkaya
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Thermal Activation ◽  
Matrix Material ◽  
Bending Moment ◽  
Matrix Composites ◽  
Activation Temperature ◽  
Alloy Metal

Continuous composite extrusion offers the possibility for manufacturing shape memory alloy metal matrix composites (SMA-MMC) with an actuator function. Due to an eccentric position of the SMA wires as well as the transformation stress caused by the suppressed shape memory effect, a bending moment can be generated during thermal activation. In this paper it is examined how the amount of necessary prestrain as well as the activation temperature influences the generated curvature of the specimens. The investigated actuator concept requires a sufficient bonding between matrix material and SMA wire to transfer the occurring stresses. For this reason, it is furthermore investigated how the process steps of stretching and subsequent thermal activation affect the quality of the bonding zone. Conventional NiTi wires (SM495) with a diameter of 1.5 mm are embedded in an aluminum AA6060 matrix for experimental investigation.

Recovery Strain and Stress Analysis of Fe-Mn-Si Shape Memory Alloy Metal-Lock Staple

2012 ◽  
Vol 580 ◽  
pp. 315-319
Author(s):  
De Ping Sun ◽  
Cheng Xin Lin ◽  
Lin Lin Liu ◽  
Zhi Jie Liu ◽  
Chao Yu Zhou
Keyword(s):  
Cast Iron ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Stress Analysis ◽  
Tensile Testing ◽  
Stress Measurement ◽  
Recovery Stress ◽  
Recovery Strain ◽  
Alloy Metal ◽  
Recovery Temperature

A metal-lock staple of Fe-Mn-Si shape memory alloy is firstly used in the repair of large cast iron structure. The paper studied the influence of pre-strain, recovery temperature, thermo-mechanical training on the recovery strain and recovery stress of the metal-lock staple of Fe-17Mn-5Si-2Cr-2Ni-1V shape memory alloy by the tensile testing and recovery stress measurement, and put forward the use principles of the metal-lock staple of the shape memory alloy.

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