本文叙述的对内燃机表面噪声的测振计算法,是近年来发展的替代“铅板复盖法”的新方法。此法综合考虑简支平板在1/3倍频带上的辐射效率,从而计算出表面辐射噪声级。本文以6110型柴油机表面振动和噪声的实测为例,指出了该机的主要噪声源,并将计算结果和实验结果作了对比。 This paper describes the calculation method of vibration measurement of internal combustion engine surface noise, which is a new method developed in recent years to replace the “lead plate covering method”. The method takes into account the radiation efficiency of the simple support plate in the 1/3 octave band to calculate the surface radiation noise level. In this paper, 6110 diesel engine surface vibration and noise measurements as an example, pointed out the main noise source of the aircraft, and the calculation results and experimental results were compared.