摘要
利用 APDL 语言对 ANSYS 软件进行二次开发,建立了潜孔锤冲击挤密钻进参数化有限元模型。为提高冲击挤密钻进速度,以阶梯钻头的结构尺寸为设计变量,以钻头最大轴向位移为目标函数,对阶梯钻头结构进行优化,并进行了试验研究。试验结果与 ANSYS 优化结果一致,优化后的钻头钻进速度较常规钻头提高了22%。采用 APDL 参数化语言能加快分析进度,结果安全可靠,为钻头的结构优化设计提供了新思路和新方法。
The parametric finite element model of DTH （down the hole hammer） impact drilling is established by use of ANSYS parametric design language （APDL）. To improve the drilling rate, the structure of stepped bit is optimized considering the structural dimension parameters as design variables and the maximum axial displacement as the object function, and then it is tested in field. The experimental results show that the penetration rate of the optimized bit is about 22% higher than that of the common one. It is proved that the whole process of analysis can be accelerated by using APDL, and the results are safety and reliable, which provides a new idea and method for the optimization design of stepped bit.
出处
《矿山机械》
北大核心
2008年第19期13-16,共4页
Mining & Processing Equipment
