An adaptive vibration isolation system is proposed in this paper to combine the advantages of both linear and nonlinear isolators. Because of the proposed structural piecewise characteristics for different levels of response, the stiffness and damping properties could be designed according to the vibration performances. The adaptive stiffness and damping properties are achieved by the joined utilization of symmetrical precompression triangle-like structure (TLS) and column frame with cam. In order to design the control mechanism with optimum structural parameters, nonlinear vibration performances are analyzed by using averaging method and singularity theory. The parameter plane is divided into transition sets, and then the optimization criterions for structural design are provided according to multiple nonlinear vibration performances including frequency band for effective isolation, multisteady state band and resonance peak, etc. The experiment is carried out to verify the theoretical selection of desirable parameters and indicates the advantages and improvement of vibration isolation/suppression brought by the structural property adaptation. This study provides a novel method of achieving structural property adaptation for the improvement of isolation effectiveness, which shows the intelligent realization by passive components.
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January 2018
Research-Article
Dynamical Analysis and Realization of an Adaptive Isolator
Sun Xiuting,
Sun Xiuting
School of Mechanical Engineering,
University of Shanghai for
Science and Technology,
516 JunGong Road,
Shanghai 200093, China
e-mail: sunxiuting@usst.edu.cn
University of Shanghai for
Science and Technology,
516 JunGong Road,
Shanghai 200093, China
e-mail: sunxiuting@usst.edu.cn
Search for other works by this author on:
Shu Zhang,
Shu Zhang
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: zhangshu@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: zhangshu@tongji.edu.cn
Search for other works by this author on:
Jian Xu,
Jian Xu
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: xujian@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: xujian@tongji.edu.cn
Search for other works by this author on:
Feng Wang
Feng Wang
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: 15wangfeng@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: 15wangfeng@tongji.edu.cn
Search for other works by this author on:
Sun Xiuting
School of Mechanical Engineering,
University of Shanghai for
Science and Technology,
516 JunGong Road,
Shanghai 200093, China
e-mail: sunxiuting@usst.edu.cn
University of Shanghai for
Science and Technology,
516 JunGong Road,
Shanghai 200093, China
e-mail: sunxiuting@usst.edu.cn
Shu Zhang
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: zhangshu@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: zhangshu@tongji.edu.cn
Jian Xu
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: xujian@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: xujian@tongji.edu.cn
Feng Wang
School of Aerospace Engineering and
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: 15wangfeng@tongji.edu.cn
Applied Mechanics,
Tongji University,
1239 Siping Road,
Shanghai 200092, China
e-mail: 15wangfeng@tongji.edu.cn
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received August 4, 2017; final manuscript received October 23, 2017; published online November 13, 2017. Assoc. Editor: Walter Lacarbonara.
J. Appl. Mech. Jan 2018, 85(1): 011002 (13 pages)
Published Online: November 13, 2017
Article history
Received:
August 4, 2017
Revised:
October 23, 2017
Citation
Xiuting, S., Zhang, S., Xu, J., and Wang, F. (November 13, 2017). "Dynamical Analysis and Realization of an Adaptive Isolator." ASME. J. Appl. Mech. January 2018; 85(1): 011002. https://doi.org/10.1115/1.4038285
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