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A generalized mechanical model with high-flexibility of viscoelastic damping materials and devices considering frequency and amplitude dependence effects
https://orcid.org/0000-0001-7769-8302
https://orcid.org/0000-0002-8401-6135
Highlights A nonlinear frequency–amplitude model for viscoelastic devices is proposed. A generalized complex stiffness model is proposed to characterize frequency dependence. A dynamic analysis method for viscoelastic structures is established. Property tests are conducted to verify the proposed mechanical models.
Abstract Owing to the complex mechanical properties influenced by excitation frequency and amplitude, the modeling of viscoelastic damping materials and devices faces the challenge of poor coordination among simplicity, accuracy, generality and flexibility. To address this issue, a nonlinear frequency–amplitude model was established by combining the proposed generalized complex stiffness model with the Berg friction model. The generalized complex stiffness model was proposed to characterize the frequency dependence, and the Berg friction model was employed to study the amplitude dependence. A dynamic analysis method was proposed based on a state space approach to realize a complete and accurate representation of the proposed mechanical model. Property tests of a viscoelastic damper and viscoelastic isolator were then conducted to study the dynamic mechanical performance under different excitation frequencies and amplitudes. Finally, the accuracy of the nonlinear frequency–amplitude model was validated using experimental data.
A generalized mechanical model with high-flexibility of viscoelastic damping materials and devices considering frequency and amplitude dependence effects
https://orcid.org/0000-0001-7769-8302
https://orcid.org/0000-0002-8401-6135
Highlights A nonlinear frequency–amplitude model for viscoelastic devices is proposed. A generalized complex stiffness model is proposed to characterize frequency dependence. A dynamic analysis method for viscoelastic structures is established. Property tests are conducted to verify the proposed mechanical models.
Abstract Owing to the complex mechanical properties influenced by excitation frequency and amplitude, the modeling of viscoelastic damping materials and devices faces the challenge of poor coordination among simplicity, accuracy, generality and flexibility. To address this issue, a nonlinear frequency–amplitude model was established by combining the proposed generalized complex stiffness model with the Berg friction model. The generalized complex stiffness model was proposed to characterize the frequency dependence, and the Berg friction model was employed to study the amplitude dependence. A dynamic analysis method was proposed based on a state space approach to realize a complete and accurate representation of the proposed mechanical model. Property tests of a viscoelastic damper and viscoelastic isolator were then conducted to study the dynamic mechanical performance under different excitation frequencies and amplitudes. Finally, the accuracy of the nonlinear frequency–amplitude model was validated using experimental data.
A generalized mechanical model with high-flexibility of viscoelastic damping materials and devices considering frequency and amplitude dependence effects
https://orcid.org/0000-0001-7769-8302
https://orcid.org/0000-0002-8401-6135
Highlights A nonlinear frequency–amplitude model for viscoelastic devices is proposed. A generalized complex stiffness model is proposed to characterize frequency dependence. A dynamic analysis method for viscoelastic structures is established. Property tests are conducted to verify the proposed mechanical models.
Abstract Owing to the complex mechanical properties influenced by excitation frequency and amplitude, the modeling of viscoelastic damping materials and devices faces the challenge of poor coordination among simplicity, accuracy, generality and flexibility. To address this issue, a nonlinear frequency–amplitude model was established by combining the proposed generalized complex stiffness model with the Berg friction model. The generalized complex stiffness model was proposed to characterize the frequency dependence, and the Berg friction model was employed to study the amplitude dependence. A dynamic analysis method was proposed based on a state space approach to realize a complete and accurate representation of the proposed mechanical model. Property tests of a viscoelastic damper and viscoelastic isolator were then conducted to study the dynamic mechanical performance under different excitation frequencies and amplitudes. Finally, the accuracy of the nonlinear frequency–amplitude model was validated using experimental data.
A generalized mechanical model with high-flexibility of viscoelastic damping materials and devices considering frequency and amplitude dependence effects
Gai, Panpan (Autor:in) / Xu, Zhaodong (Autor:in) / Spencer, Billie F. Jr. (Autor:in) / Dai, Jun (Autor:in) / Li, Hongwei (Autor:in)
Engineering Structures ; 288
06.04.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2009
| British Library Online Contents | 2012
Study on mechanical properties of high damping viscoelastic dampers
| SAGE Publications | 2019