Development of a three-axis hybrid mesh isolator using the pseudoelasticity of a shape memory alloy

Youn, Se-Hyun; Jang, Yu‐Sin; Han, Jae‐Hung

doi:10.1088/0964-1726/20/7/075017

Cited by 26 publications

(23 citation statements)

References 10 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The strategy to achieve the design goal of this study is to use the radial direction of the ring-type SMA mesh washer as a main axis to support the vibration sources. This strategy is in contrast with the applications of conventional mesh washers [16][17][18][19][20], in which vibration damping is effective only in the thickness direction of the washer.…”

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 98%

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Kwon

2017

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

On-board appendages with mechanical moving parts for satellites produce undesirable micro-jitters during their on-orbit operation. These micro-jitters may seriously affect the image quality from high-resolution observation satellites. A new application form of a passive vibration isolation system was proposed and investigated using a pseudoelastic SMA mesh washer. This system guarantees vibration isolation performance in a launch environment while effectively isolating the micro-disturbances from the on-orbit operation of jitter source. The main feature of the isolator proposed in this study is the use of a ring-type mesh washer as the main axis to support the micro-jitter source. This feature contrasts with conventional applications of the mesh washers where vibration damping is effective only in the thickness direction of the mesh washer. In this study, the basic characteristics of the SMA mesh washer isolator in each axis were measured in static tests. The effectiveness of the design for the new application form of the SMA mesh washer proposed in this study was demonstrated through both launch environment vibration test at qualification level and micro-jitter measurement test which corresponds to on-orbit condition.

show abstract

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 98%

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Kwon

2017

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

show abstract

“…Compared with natural rubber, EMWM has better high-low temperature adaptability [2]. The comprehensive properties enable this material to be used in extremely rough environments, such as the vibration control of thin-wall casings for modern aero-engines [3], the vibration control of power turbine rotors for turboprop engines [4], isolation mounting of electronic components in satellites and launch vehicles [5], and the sealing of rotors for turbo-machinery [6].…”

Section: Introductionmentioning

confidence: 99%

A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

Ding

Bai

et al. 2019

Materials

View full text Add to dashboard Cite

Entangled metallic wire material (EMWM) is a kind of porous damping material. To promote the engineering application of EMWM, it is necessary to establish the constitutive model of EMWM to estimate its mechanical properties. In this paper, a series of quasi-static compression experiments for plate-like EMWM specimens made of austenitic stainless steel wire (06Cr19Ni10) with different densities were carried out in the temperature range of 20–500 °C. It was found that the stiffness of the plate-like EMWM would increase with the increases in the ambient temperature. The non-linear characteristics of the force–displacement curve of the plate-like EMWM would be weakened. Taking the spatial structural characteristics of the plate-like EMWM and the influence of the thermal expansion of the structure into account, a new constitutive model for plate-like EMWM was presented by the combination of the Johnson–Cook model and the Sherwood–Frost constitutive framework model. The accuracy of the model was verified by the experimental data under different temperatures. The results show that the calculated results of the model are consistent with the experimental results. This model can provide an effective theoretical basis for predicting the mechanical properties of plate-like EMWM and guiding its design.

show abstract

“…Its performance was fully verified in a variety of experiments (Jeong et al, 2014). A mesh washer isolator (WI), made of SMA wire in pseudoelastic phase, was used as the isolation material because it was reported to exhibit remarkable attenuation of shock and vibration (Youn et al, 2010(Youn et al, , 2011. In addition, unlike an ideal spring, this structure exhibits a large increase in stiffness when it is compressed.…”

Section: Introductionmentioning

confidence: 99%

Design of frequency-tunable mesh washer isolators using shape memory alloy actuators

Jeong

Lee

Han

et al. 2015

Journal of Intelligent Material Systems and Structures

Self Cite

View full text Add to dashboard Cite

This article introduces a novel frequency-tunable isolator that uses shape memory alloy wires as actuators and as an isolation material. The isolation material is a compressed mesh washer using the pseudoelasticity of the shape memory alloy. Frequency tuning of the isolator can easily be achieved using a simple electric circuit. Two improved models of frequency-tunable isolator, based on the authors' previous model, were proposed and fabricated. This article presents detailed design procedures for adaptive shock isolators for launch vehicles that are able to achieve both shock attenuation performance and avoidance of vibration amplification. Launch vehicles experience a severe dynamic environment during the flight phase. In particular, pyroshock generated from several separation events could result in malfunctions of electrical components. Moreover, low-frequency vibration (\100 Hz) at the maximum dynamic-pressure phase could reduce the structural integrity of payloads. With this system, the resonant frequencies of the isolators are selectively controlled in two states using an adaptive mechanical system with compression of the isolation materials. Successful designs for the isolators and various test results regarding frequency tuning are presented.

show abstract

Development of a three-axis hybrid mesh isolator using the pseudoelasticity of a shape memory alloy

Cited by 26 publications

References 10 publications

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

Experimental Validation of Fly-Wheel Passive Launch and On-Orbit Vibration Isolation System by Using a Superelastic SMA Mesh Washer Isolator

A Constitutive Model of Plate-Like Entangled Metallic Wire Material in Wide Temperature Range

Design of frequency-tunable mesh washer isolators using shape memory alloy actuators

Contact Info

Product

Resources

About