A mechanical model for the offset-axes pendulum drill assembly (OAPDA) was established according to the continuous beam theory and the d.

运用纵横弯曲连续梁理论和达朗伯原理，建立了偏轴钟摆钻具组合动力学分析模型。

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Numerical simulation shows that the new method is more effective for the drill-string assembly unsuitable to be simplified as a torsion pendulum.

数值模拟结果表明，对不适于简化为扭转摆的钻柱系统，采用基于钻柱扭转杆模型的新方法进行设计可以取得相对较好的减振效果。

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Numerical simulation shows that the new method is more effective for the drill-string assembly unsuitable to be simplified as a torsion pendulum.

数值模拟结果表明，对不适于简化为扭转摆的钻柱系统，采用基于钻柱扭转杆模型的新方法进行设计可以取得相对较好的减振效果。

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