Design and Experimental Implementation of a Beam-Type Twin Dynamic Vibration Absorber for a Cantilevered Flexible Structure Carrying an Unbalanced Rotor: Numerical and Experimental Observations

This paper presents experimental and numerical results about the effectiveness of a beam-type twin dynamic vibration absorber for a cantilevered flexible structure carrying an unbalanced rotor. An experimental laboratory prototype setup has been built and implemented in our laboratory and numerical investigations have been performed through finite element analysis. The proposed system design consists of a primary cantilevered flexible structure with an attached dual-mass cantilevered secondary dynamic vibration absorber arrangement. In addition, an unbalanced rotor system is attached to the tip of the flexible cantilevered structure to inspect the system response under harmonic excitations. Numerical findings and experimental observations have revealed that significant vibration reductions are possible with the proposed dual-mass, cantilevered dynamic vibration absorber on a flexible cantilevered platform carrying an unbalanced rotor system at its tip. The proposed system is efficient and it can be practically tuned for variety of design and operating conditions. The designed setup and the results in this paper can serve for practicing engineers, researchers and can be used for educational purposes.

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A tunable dynamic vibration absorber for unbalanced rotor system

Journal of Mechanical Science and Technology ◽

10.1007/s12206-018-0305-7 ◽

2018 ◽

Vol 32 (4) ◽

pp. 1519-1528 ◽

Cited By ~ 9

Author(s):

Hongliang Yao ◽

Tongzhao Wang ◽

Bangchun Wen ◽

Baijun Qiu

Keyword(s):

Rotor System ◽

Vibration Absorber ◽

Dynamic Vibration Absorber ◽

Dynamic Vibration ◽

Unbalanced Rotor

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Dynamic Vibration Absorber Design to Suppress Boring Chatter: Absorber Parameters Identification Based on Modal Correlation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.753-755.1816 ◽

2013 ◽

Vol 753-755 ◽

pp. 1816-1820 ◽

Cited By ~ 1

Author(s):

Zhen Kun Hu ◽

Ming Wang ◽

Tao Zan

Keyword(s):

Damping Ratio ◽

Correlation Method ◽

Vibration Absorber ◽

Dynamic Vibration Absorber ◽

Element Analysis ◽

Simple Method ◽

Dynamic Vibration ◽

The Finite Element Analysis ◽

Chatter Control ◽

Modal Method

The dynamic vibration absorber (DVA) is generally used to suppress the machining vibration in boring processes. The DVA consists of an additional massspringdamper sub-system, and needs accurately tuning of its natural frequency and damping ratio to match the main structure for vibration control. For obtaining the optimal performance of the DVA, the parameters of the DVA used in a boring bar is identified using modal correlation method, which combines the finite element analysis method with test modal method to validate the FEMs results. The analysis results show that the modal correlation method is an effective and simple method to accurately identify the dynamic parameters of DVA and guarantee the optimal design of the DVA for boring chatter control.

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Optimal and robust modal control of a flexible structure using an active dynamic vibration absorber

Smart Materials and Structures ◽

10.1088/0964-1726/20/4/045003 ◽

2011 ◽

Vol 20 (4) ◽

pp. 045003 ◽

Cited By ~ 17

Author(s):

Sang-Myeong Kim ◽

Semyung Wang ◽

Michael J Brennan

Keyword(s):

Flexible Structure ◽

Vibration Absorber ◽

Modal Control ◽

Dynamic Vibration Absorber ◽

Dynamic Vibration

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Beam-Type Dynamic Vibration Absorber Comprised of Free-Free Beam

Journal of Engineering Mechanics ◽

10.1061/(asce)0733-9399(1998)124:4(476) ◽

1998 ◽

Vol 124 (4) ◽

pp. 476-479 ◽

Cited By ~ 15

Author(s):

Keizi Kawazoe ◽

Iwao Kono ◽

Tadayoshi Aida ◽

Toshihiko Aso ◽

Kazushi Ebisuda

Keyword(s):

Vibration Absorber ◽

Dynamic Vibration Absorber ◽

Dynamic Vibration ◽

Beam Type ◽

Free Beam

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Theoretical Analysis and Experimental Study of a Cantilever Beam-Type Dynamic Vibration Absorber

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.415.436 ◽

2013 ◽

Vol 415 ◽

pp. 436-441

Author(s):

Jun Zhao ◽

Chao Yang Ma

Keyword(s):

Cantilever Beam ◽

Vibration Isolation ◽

Vibration Absorber ◽

Dynamic Vibration Absorber ◽

Isolation System ◽

Absorption Frequency ◽

Vibration Absorption ◽

Response Characteristics ◽

Dynamic Vibration ◽

Beam Type

Aiming at the limitation problem of constant dynamic parameters for classical vibration absorber, a new cantilever beam-type absorber device is designed which is composed of a continuous beam and mass block, a vibration isolation system model with a beam-type absorber is established, the absorption frequency of the mass block at different positions is calculated. And based on the software of ADAMS, the frequency response characteristics of the system are obtained. Finally, the good vibration absorption of the beam absorber is verified. The results show that the feasibility and effectiveness of cantilever beam-type absorber is confirmed, and the dynamic vibration absorber with continuous adjustable parameters is achieved.

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Research on Frequency-Tuned Dynamic Vibration Absorber

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.66-68.1762 ◽

2011 ◽

Vol 66-68 ◽

pp. 1762-1768

Author(s):

Shi Liang Jiang ◽

Tie Jun Yang ◽

Jing Tao Du ◽

Yin Yin Hu

Keyword(s):

Vibration Absorber ◽

Beam Structure ◽

Dynamic Vibration Absorber ◽

Bending Vibration ◽

Element Analysis ◽

Simply Supported Beam ◽

Vibration Absorption ◽

Simply Supported ◽

Dynamic Vibration ◽

Resonance Frequencies

A frequency-tuned dynamic vibration absorber by tuning stiffness to reduce vibration at some troubled resonance frequencies of a simply supported beam structure is designed in this paper. Both theoretical and simulation analysis of vibration absorption are conducted. On the basis of analyzing bending vibration of the simply supported beam structure, inherent characteristics and frequency response characteristics of the simply supported beam system before and after being fixed dynamic vibration absorber are obtained by using the energy method with Rayleigh-Ritz procedure of flexible structure. Simulation model of the whole system, which is established by code written, is compared with the model established by finite element analysis software. Results are presented to show the efficiency of the vibration absorber, and then the effect of damping of the dynamic vibration absorber on vibration absorption is studied.

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