According to the experimental device designed on the basis of the principle of similitude, the longitudinal vibration characteristics of bottom string in straight hole were investigated.

• 摘要为了了解直井眼中底部钻柱的纵向振动特性，利用根据相似理论设计出的钻柱动力学模拟试验装置，对不同参数组合下的钟摆钻具组合纵向振动特性进行了模拟实验研究。