试验证明，饱和土属于应变硬化介质，在激波动力加载条件下，土中应力波将保持其激波特征不变。
The tests prove that saturated soils are a kind of strain hardened media and stress wave will maintain shock wave characteristic invariant during shock wave dynamic loading.
研究了将功能梯度材料中应力波传播的计算模型应用到土介质中，提出了梯度土介质的概念。
The model of wave propagation in functionally graded material (FGM) is introduced to soil medium, and the concept of functionally graded soil medium is brought forward.
分析了动力试桩中，因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
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