航天器噪声试验中结构振动响应预示方法研究 1)

李青,邢立坤,柏江,邹元杰

METHOD STUDY ON RESPONSE PREDICTION OF STRUCTURAL VIBRATIONS IN SPACECRAFT ACOUSTIC TESTS 1)

Qing Li,Likun Xing,Jiang Bai,Yuanjie Zou

表1 噪声试验条件

Table 1 Acoustic test conditions

Octave center frequency/ Sound pressure level/ Test tolerance/ Hz dB dB 31.5 128 ±5.0 63 132 ±5.0 125 135 ±3.0 250 138 ±3.0 500 137 ±3.0 1000 136 ±3.0 2000 134 ±3.0 4000 132 ±5.0 8000 130 ±5.0 total sound pressure level 144 ±1.5