We do modal and Harmonic analysis to it and compared it with cast aluminum valve rocker cover. Analysis result indicated that BMC valve rocker cover can reduce vibration and noises more.
将BM C材料用于气门罩壳，采用有限元方法对其进行模态分析和谐响应分析，并与铸铝罩壳进行了比较，计算结果表明，BMC材料用于气门罩壳具有减振、降噪的作用。
The comparison indicates that the appropriate results can be obtained only when with fine enough meshing in Finite Element modal analysis, as the cylinder block is a complex and thin cast parts.
研究表明，对于柴油机气缺体这类薄壁铸造的复杂构件，进行有限元模态分析，需要采用很细的网格划分，才能保证较精确的结果。
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