对线性非弹性固体可由应变滞后谱进行一般的描述。在这样的介质中传播的脉冲可用峰值振幅A_p、峰值时间t_p、视冲击时间t。和上升时间T_r表述。对具有近似常数的Q值和扩展到很高频率的宽吸收带来说,脉冲的形状渐近地取决于t~*=t_u/Q,其中t_u是未释放部分的旅行时间。脉冲传播可以作数字和解析研究,并满足下列的比例变化定律:(1)脉冲形状与吸收带的低频截止无关;(2)A_p随1/t~*变化;(3)T_r是近似常数约为t~*/2;以及(4)t_a(基本持续时间)和t_p都随吸收带的高频截止呈对数增加。吸 The linear inelastic solid can be described generally by the strain hysteresis spectrum. Pulses propagating in such media are available with peak amplitude A_p, peak time t_p, and impact time t. And the rise time T_r expression. For a Q value with an approximately constant and a wide absorption band extending to a very high frequency, the shape of the pulse asymptotically depends on t ~ * = t_u / Q, where t_u is the travel time of the non-released part. Pulse propagation can be studied numerically and analytically, and satisfies the following law of proportional variation: (1) the pulse shape has nothing to do with the low frequency cutoff of the absorption band; (2) A_p varies with 1 / t ~ *; (3) T_r is an approximation constant about Is t ~ * / 2; and (4) t_a (basic duration) and t_p all increase logarithmically with the high frequency cutoff of the absorption band. Suck