【摘要】：針對設備動力參數未知,設備基座振動加速度給定情況,提出阻抗分析法解決設備振動激勵載荷下的船舶結構動力分析問題�；诶碚摲治�,提出阻抗分析法,實現設備對基座的振動能量采取振動加速度激勵作為輸入,進而分析結構動力響應;通過艙段結構動力分析驗證方法的有效性,并討論不同加載方式對結構動力響應的影響規(guī)律,研究表明,該方法應用于結構聲振分析是可行的,且加載方式對結構響應影響較大;在此基礎上,將阻抗分析法應用于水下航行器水下聲輻射研究,分析水下航行器聲場周向分布規(guī)律。結果表明激勵頻率較低時水下航行器水下聲場呈對稱分布,隨著頻率提高,其對稱性逐漸下降。
[Abstract]:In view of the unknown dynamic parameters of the equipment and the given vibration acceleration of the equipment base, the impedance analysis method is proposed to solve the dynamic analysis problem of the ship structure under the vibration excitation load of the equipment. Based on the theoretical analysis, the impedance analysis method is proposed to realize that the vibration acceleration excitation is used as input to the vibration energy of the base, and then the dynamic response of the structure is analyzed. The validity of the method is verified by the dynamic analysis of the cabin structure, and the influence of different loading modes on the dynamic response of the structure is discussed. The results show that the method is feasible for the acoustic vibration analysis of the structure. The loading mode has a great influence on the structure response. On this basis, the impedance analysis method is applied to the underwater acoustic radiation research of underwater vehicle, and the circumferential distribution rule of underwater vehicle sound field is analyzed. The results show that the underwater acoustic field of the underwater vehicle exhibits symmetrical distribution when the excitation frequency is low, and the symmetry decreases gradually with the increase of the frequency.
【作者單位】： 哈爾濱工程大學船舶工程學院;中國人民解放軍92857部隊;
【基金】：國家自然科學基金項目(51209052) 黑龍江省青年科學基金資助項目(QC2011C013) 上海交通大學海洋工程國家重點實驗室基金(1307) 工信部高技術船舶項目 中央高�；究蒲袠I(yè)務費資助項目(HEUCF140117) 國防預研項目(4010403010103) 中國博士后基金(2014M552661)
【分類號】：U661.4
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本文編號：2380748