The dynamic strength of rod string and the mount position of centralizer were calculated, according to the acquired deformation of rod string and its impact contact force with tube in the time domain.
根据求得的时域内抽油杆柱受力变形值以及与油管柱碰撞接触力，计算了抽油杆柱动强度和扶正器安放位置。
The contact force during impact process was measured by force sensor and data signal processing system in real time.
冲击过程中的接触载荷由压力传感器及数字信号处理系统实时测量。
Uses dynamic contact FEM to analyze impact and collision of hammer to foundation soil in the dynamic compaction, establishes the contact relation between dynamic contact force and speed.
采用动力接触有限元法分析强夯中夯锤对地基土的冲击碰撞过程，建立动接触力与速度之间的接触关系式。
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