Relating the complex moduli of viscoelastic materials to the complex stiffness of antivibration mounts

S. Olutunde Oyadiji; Geoffrey R. Tomlinson

doi:10.1117/12.174099

1 May 1994 Relating the complex moduli of viscoelastic materials to the complex stiffness of antivibration mounts

S. Olutunde Oyadiji, Geoffrey R. Tomlinson

Proceedings Volume 2193, Smart Structures and Materials 1994: Passive Damping; (1994) https://doi.org/10.1117/12.174099
Event: 1994 North American Conference on Smart Structures and Materials, 1994, Orlando, FL, United States

Abstract

Analytical and empirical expressions that relate the complex dynamic stiffness of an elastomeric or viscoelastic anti-vibration mount to the complex Young's modulus of the constituent elastomeric or viscoelastic material of the mount are presented. These expressions incorporate the geometrical dimensions of the mount, the shape factor effects, and the non- linear deflection characteristics of the mount. It is shown that the use of these expressions, in conjunction with the complex Young's modulus of the constituent viscoelastic material, yields accurate predictions of the complex dynamic stiffness characteristics of an anti-vibration mount which was subjected to static prestrain levels of between 0% and 30% and was tested over a wide temperature range of -50 degree(s)C to 100 degree(s)C. Furthermore, it is shown that the master curves of complex dynamic stiffness predicted for the anti-vibration mount at static prestrain levels of 10% to 20% correlate fairly well with the master curves of complex dynamic stiffness derived from measured data using the temperature-frequency superposition principle.

Citation Download Citation

S. Olutunde Oyadiji and Geoffrey R. Tomlinson "Relating the complex moduli of viscoelastic materials to the complex stiffness of antivibration mounts", Proc. SPIE 2193, Smart Structures and Materials 1994: Passive Damping, (1 May 1994); https://doi.org/10.1117/12.174099

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