What is spectral acceleration?
什么是谱加速度?。
SA (spectral acceleration) is approximately what is experienced by a building, as modeled by a particle on a massless vertical rod having the same natural frequency of vibration as the building.
而光谱加速度大致上是一座建筑物承受的加速度，科学家把一颗与目标建筑物具有相同自然频率的粒子放在一个近似无质量的垂直控制棒上进行模拟得出此数据。
Fixing the acceleration sensor in the axis of the wheel, by measuring the acceleration of the axe to calculate road power spectral indirectly, this greatly simplifies the operation process.
在负重轮轮轴处安装加速度传感器，通过测量该处的时域加速度来间接计算路面功率谱，大大简化了操作过程。
Its power spectral model is the twice-filtered white noise model. Moreover, the relation between the power spectral intensity and the mean value of maximum ground acceleration is set up.
地震地面运动功率谱模型采用两次过滤白噪声模型，建立了地震地面运动谱强度与最大加速度均值之间的关系。
The power spectral density function of ground acceleration can be described as filtered white noise applied on each support point.
地面运动加速度功率谱模型为零均值的平稳高斯过程，描述为过滤白噪声施加于支撑各点。
Then, the power spectral density (PSD) of the acceleration at ground level is evaluated by an iterative approach according to the principle of equivalent peak acceleration.
然后，根据加速度峰值等效原则，选代计算得到地面的加速度功率谱密度曲线；
It is shown that spectral method gives a more reasonable result, especially for the calculation of velocity and acceleration field.
计算表明波谱分析法的结果比按特征值的规则波分析法的结果更为合理，特别是对流速与加速度场的分析尤为明显。
It is shown that spectral method gives a more reasonable result, especially for the calculation of velocity and acceleration field.
计算表明波谱分析法的结果比按特征值的规则波分析法的结果更为合理，特别是对流速与加速度场的分析尤为明显。
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