2012
DOI: 10.1063/1.4751863
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Modeling and analysis of a negative stiffness magnetic suspension vibration isolator with experimental investigations

Abstract: This paper presents a negative stiffness magnetic suspension vibration isolator (NSMSVI) using magnetic spring and rubber ligaments. The positive stiffness is obtained by repulsive magnetic spring while the negative stiffness is gained by rubber ligaments. In order to study the vibration isolation performance of the NSMSVI, an analytical expression of the vertical stretch force of the rubber ligament is constructed. Experiments are carried out, which demonstrates that the analytical expression is effective. Th… Show more

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Cited by 23 publications
(11 citation statements)
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“…Experimental validation of NS vibration isolation mechanisms with their designs based on Euler post-buckled beams have been presented in [12][13][14][15][16]. In automotive engineering, applications include the design of NS suspensions [17,18] as well as vibration isolation seats [19][20][21] for improved passenger comfort. A highspeed railroad vibration isolation system employing NS elements was discussed in [22].…”
Section: Introductionmentioning
confidence: 99%
“…Experimental validation of NS vibration isolation mechanisms with their designs based on Euler post-buckled beams have been presented in [12][13][14][15][16]. In automotive engineering, applications include the design of NS suspensions [17,18] as well as vibration isolation seats [19][20][21] for improved passenger comfort. A highspeed railroad vibration isolation system employing NS elements was discussed in [22].…”
Section: Introductionmentioning
confidence: 99%
“…Using the variables described above and Equations (6)- (8), the complex stiffness of the diaphragm can be measured indirectly. An experimental apparatus to apply the indirect measurement method explained above is shown in Figure 12.…”
Section: Indirect Extraction Of Diaphragm Complex Stiffnessmentioning
confidence: 99%
“…Using the variables described above and Equations (6)- (8), the complex stiffness of the diaphragm can be measured indirectly.…”
Section: Indirect Extraction Of Diaphragm Complex Stiffnessmentioning
confidence: 99%
“…where 12 and 32 are the stresses of the corresponding principal stress surface and 2 is the unknown pressure. The stretch ratio can be expressed as 12 =( + 2 )/ , where 2 is the length variable in the vertical direction.…”
Section: Part "2" Stiffness Of the Elastomeric Diaphragmmentioning
confidence: 99%
“…Therefore, a direct theoretical derivation method must be established for the development of an analytical model for a pneumatic vibration isolator. Zhu et al [12] and Li [13] proposed an analytic model of an elastomeric belt in a magnetic-levitation vibration isolator using the Mooney-Rivlin model, and the model was validated experimentally. In that research, the elastomeric belt was chosen as the research object, and an accurate model was obtained according to direct theoretical derivation.…”
Section: Introductionmentioning
confidence: 99%