利用新的接触模型，采用忽略横向剪切变形的三维空间曲梁单元对三维曲井内钻柱的接触非线性进行了有限元分析，给出了一套计算方法。
Based on the new contact model, finite element analysis scheme of drill rods in contact with curved boreholes is given using Bernoulli spatial curved beam elements.
建立一种空间有限元梁单元新模型，基于有限元法和Lagrange方程导出有限元梁单元的运动微分方程。
A new model of spatial flexible beam element is proposed. The dynamic equation of the spatial flexible beam element is derived based on the finite element theory and Lagrange equations.
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