CAJ | 학술논문

在发动机激励下,对某款汽车前围和地板声学包进行了优化设计分析.首先在VA One软件中建立前围和地板统计能量分析模型并创建声学包,得到前围和地板的传递损失.基于正交优化设计理论,从材料厚度、密度、覆盖率、堵件设置方面对声学包进行优化,得到满足降噪性能和轻量化的最优设计,并通过对比优化前后车内的声压级验证了最优声学包设计方案.
재발동궤격려하,대모관기차전위화지판성학포진행료우화설계분석.수선재VA One연건중건립전위화지판통계능량분석모형병창건성학포,득도전위화지판적전체손실.기우정교우화설계이론,종재료후도、밀도、복개솔、도건설치방면대성학포진행우화,득도만족강조성능화경양화적최우설계,병통과대비우화전후차내적성압급험증료최우성학포설계방안.
In this paper, the sound packages of vehicle dash and floor were analyzed and optimized under the engine acoustic excitation.First, models of Statistical Energy Analysis and sound packages were built with software VA One.And then, the Transmission Loss of the sound packages was calculated.According to the or-thogonal optimal design method, the best design was got by modifying the blanking element and the thickness, density and coverage of the sound packages.The optimal sound packages of dash panel and floor of noise reduc-tion and light weight were achieved, which is improved via the comparison of sound pressure level before and af-ter improvement.