Sound Transmission Loss of Adhesively Bonded Sandwich Panels with Pyramidal Truss Core: Theory and Experiment
作者： C. Shen , Q. C. Zhang , S. Q. Chen , H. Y. Xia , F. Jin
DOI: 10.1142/S175882511540013X
关键词:
摘要: In this paper, an analytical model is developed to investigate sound transmission loss characteristic of adhesively bonded metal sandwich panels with pyramidal lattice truss cores based on 3D elasticity theory. Meanwhile, practical specimen fabricated conduct corresponding insulation experiment test via a standing wave tube method. The effective elastic constant derived using one homogenization theory account equivalent strain energy. It found that satisfactory agreement achieved between theoretical solutions and results, damping effect adhesive bonding interface facesheets core has great impact loss. Further parameter investigations demonstrate the significant elevation azimuth angles cores, which can be conveniently changed tailor acoustic performance in whole frequency range.
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