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基于LMS Virtual Lab的气缸盖罩辐射噪声仿真分析

South Agricultural Machinery(2020)

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Abstract
为满足发动机轻量化及NVH性能要求,本文采用有限元软件和LMS Virtual.Lab Acoustic噪声分析软件联合求解方法对发动机气缸盖罩模态和表面辐射噪声进行仿真分析,通过对比轻量化设计前后气缸盖罩的辐射噪声水平,确定轻量化设计后的气缸盖罩对发动机的整体噪声水平影响较小,轻量化设计方案可在发动机开发过程中使用.
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