Owing to start-up and dwell continually under high speed working condition, the inertial force is the main load that leads to the chain vibration and affects the position accuracy and step rate.

由于链在高速工况下处于频繁的启动和停歇状态，惯性力是其主要的工作负荷，进而引发链节的振动，影响链系统的定位精度和步进速率。

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According to the test results, the computational formula of the shear load capacity about the externally bonded steel plates and the restricted condition of oblique shear section are set up.

根据试验结果，建立了粘钢部分承担的受剪承载力理论计算公式和受剪斜截面限制条件。

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To set up load, restriction, and the original condition simulate the movement between drill bit and stratum.

对复合钻头设置载荷、约束及边界条件，确定初始条件，模拟钻头和地层相互运动、接触性分析。

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