CAJ | 학술논문

文章针对波叠加法相对于边界元法的巨大优越性,将其应用到分析水下大型结构的声场全息重建问题中.根据波叠加方法的近场声全息技术,结合边界元软件SYSNOISE,重建了一80 m长的长椭球壳模型在力激励作用下的空间声场.通过理论推导和数值仿真,分析了各因素对重建精度的影响.将波叠加法的计算结果与数值软件计算的结果进行对比,证明了应用波叠加法对其声场进行全息重建的方法是可行有效的,而且计算时间短、效率高、计算精度也完全满足工程需要.进一步拓宽了波叠加法在计算水下结构振动声辐射和声全息问题的应用范围.
문장침대파첩가법상대우변계원법적거대우월성,장기응용도분석수하대형결구적성장전식중건문제중.근거파첩가방법적근장성전식기술,결합변계원연건SYSNOISE,중건료일80 m장적장타구각모형재력격려작용하적공간성장.통과이론추도화수치방진,분석료각인소대중건정도적영향.장파첩가법적계산결과여수치연건계산적결과진행대비,증명료응용파첩가법대기성장진행전식중건적방법시가행유효적,이차계산시간단、효솔고、계산정도야완전만족공정수요.진일보탁관료파첩가법재계산수하결구진동성복사화성전식문제적응용범위.
The Wave Superposition Method (WSM) is applied to calculate for the acoustic holography and reconstruction problem of large underwater structures because of its great superiority to boundary element method. According to the WSM-based near field acoustic holography, jointly using SYSNOISE, the sound field of an 80 meters long rotating ellipsoid shell model with a force load was reconstructed. By theoretical deduction and numerical simulation, the factors of reconstruction accuracy were analyzed. Compared with the results by using the WSM and numerical software, it is proved that it is feasible and effective to use WSM for sound field reconstruction. The WSM costs short calculating time and has high efficiency and cal-culation accuracy in engineering application, which will extend the application range of the WSM on calcu-lating the underwater structures vibration and sound radiation and acoustic holography problems.