한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제18권2호
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  • Pages.185-191
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  • 2008
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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점탄성 물질의 온도와 주파수 의존성을 고려한 구속형 제진보의 최대 손실계수 설계

Optimal Layout Design of Frequency- and Temperature-dependent Viscoelastic Materials for Maximum Loss Factor of Constrained-Layer Damping Beam

  • 발행 : 2008.02.20
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초록

Optimal damping layout of the constrained viscoelastic damping layer on beam is identified with temperatures by using a gradient-based numerical search algorithm. An optimal design problem is defined in order to determine the constrained damping layer configuration. A finite element formulation is introduced to model the constrained layer damping beam. The four-parameter fractional derivative model and the Arrhenius shift factor are used to describe dynamic characteristics of viscoelastic material with respect to frequency and temperature. Frequency-dependent complex-valued eigenvalue problems are solved by using a simple re-substitution algorithm in order to obtain the loss factor of each mode and responses of the structure. The results of the numerical example show that the proposed method can reduce frequency responses of beam at peaks only by reconfiguring the layout of constrained damping layer within a limited weight constraint.

키워드

참고문헌

  1. Hajela, P. and Lin, C.-Y., 1991, 'Optimal Design of Viscoelastically Damped Beam', Appl. Mech. Rev., Vol. 44, No. 11, pp. S96-S106 https://doi.org/10.1115/1.3121378
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  5. Zheng, H., Cai, C. and Tan, X. M., 2004, 'Optimization of Partial Constrained Layer Damping Treatment for Vibrational Energy Minimization of Vibrating Beams', Computers & Structures, Vol. 82, pp. 2493-2507 https://doi.org/10.1016/j.compstruc.2004.07.002
  6. Lee, D.-H., 2005, 'Optimal Treatment of Unconstrained Visco-elastic Damping Layer on Beam to Minimize Vibration Responses', Transactions of the Korean Society of Noise and Vibration Engineering, Vol. 15, No. 7, pp. 645-651 https://doi.org/10.5050/KSNVN.2005.15.6.645
  7. Lee, D.-H., 2006, 'Optimal Placement of a Constrained Damping Layer for Reduction of Interior Noise', 11th AIAA/ISSMO Multi- disciplinary Analysis and Optimization Conference, Portsmouth
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피인용 문헌

  1. Design for Improving the Loss Factor of Composite with Sandwich Structure vol.26, pp.3, 2016, https://doi.org/10.5050/KSNVE.2016.26.3.235