中文摘要：

在在颤动之间的接口的动态接触僵硬僵硬范围和半无限的横着各向同性的粘弹性的固体被调查。在垂直方向附加到静态的压缩力量上的震荡的力量使一个僵硬范围的颤动激动，它在接触区域引起可变接触半径和接触压力分发。足够地小的震荡力量的假设产出经常的接触半径的动态接触压力分布，它在在僵硬范围和半无限的固体之间的接口给动态接触僵硬。数字计算在动态接触僵硬上显示出横着各向同性的固体的范围，和有弹性的常数的颤动频率的 inuence，它在回声超声显微镜学由振荡器的回声频率移动有益于有弹性的常数的量的评估和单个六角形的谷物的取向。

英文摘要：

Dynamic contact stiffness at the interface between a vibrating rigid sphere and a semi-infinite transversely isotropic viscoelastic solid is investigated. An oscillating force superimposed onto a static compressive force in the vertical direction excites the vibration of a rigid sphere, which causes variable contact radius and contact pressure distribution in the contact region. The assumption of a sufficiently small oscillating force yields a dynamic contact-pressure distribution of a constant contact radius, which gives dynamic contact stiffness at the interface between the rigid sphere and the semi-infinite solid. Numerical calculations show the influence of vibration frequency of the sphere, and elastic constants of the transversely isotropic solid on dynamic contact stiffness, which benefits quantitative evaluation of elastic constants and orientation of single hexagonal grains by resonance-frequency shifts of the oscillator in resonance ultrasound microscopy.