Based on the 3D analysis result, shear models of ring joint bolt is built and shear parameters between rings needed in 2D analysis with beam-spring model can be obtained by this shear model.

然后，在对三维有限元分析结果研究的基础上，建立了环缝处的纵向螺栓剪切模型，利用该模型可以计算得到错缝拼装衬砌二维梁-弹簧模型中环间剪切弹簧的刚度；

youdao

Based on MDT and in view of the mine pull test instrument for bolt, the paper introduces a 3d parameter design method and points out some problems to be noticed.

本文基于MDT的基础上，针对矿用锚杆拉力计介绍三维参数化设计方法及指出应当注意的问题。

youdao