• Chinese Journal of Ship Research
  • Vol. 17, Issue 1, 132 (2022)
Wenkai DONG and Meixia CHEN
Author Affiliations
  • School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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    DOI: 10.19693/j.issn.1673-3185.02186 Cite this Article
    Wenkai DONG, Meixia CHEN. Sound absorption performance analysis of anechoic coating under hydrostatic pressure considering cavity pressure[J]. Chinese Journal of Ship Research, 2022, 17(1): 132 Copy Citation Text show less
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    尺寸数值
    覆盖层长度la/mm50
    空腔长度lb/mm40
    空腔外径ra/mm8.4
    空腔内径rb/mm2.1
    Table 1. Geometric dimensions of anechoic coating unit cell
    参数数值
    静态动态
    杨氏模量/Pa8.9e68.9e6+2.3e3*f−0.01*f2
    泊松比0.4960.496
    损耗因子0.2+1.2e−4*f−8.2e−9*f2
    密度/(kg·m−3)900900
    Table 2. Rubber material parameters of anechoic coating
    参数静压/MPa
    00.51.52.5
    空腔长度lb/mm40.039.438.337.2
    f10模态频率/Hz4 287.504 348.534 474.814 606.64
    第1谷值频率/Hz4 2814 3204 3984 478
    f20模态频率/Hz8 575.008 697.068 949.639 213.28
    第2谷值频率/Hz8 5618 6548 8208 992
    Table 3. The cavity modal frequency and the 1st and 2nd valley frequencies of sound absorption under different hydrostatic pressures
    Wenkai DONG, Meixia CHEN. Sound absorption performance analysis of anechoic coating under hydrostatic pressure considering cavity pressure[J]. Chinese Journal of Ship Research, 2022, 17(1): 132
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