牙轮钻头牙齿破岩效率的模糊综合评判方法  

Fuzzy Comprehensive Evaluation Method of Cone Bit Teeth Rock-breaking Efficiency

作　　者：邓嵘[1] 丰波[1] 敖建章 郭正伟[1] 

机构地区：[1]西南石油大学机电工程学院 [2]武汉军械士官学校

出　　处：《石油机械》2016年第3期6-11,共6页China Petroleum Machinery

基　　金：四川省科技支撑计划项目"材料的高效切削及输送技术研究"(2013GZX0159)

摘　　要：针对目前钻头牙齿破岩效率评价方法存在的不足,在考虑牙齿破岩体积、破岩面积及齿坑深度的基础上也考虑了使用寿命,针对这些参数运用模糊数学综合评判方法对牙齿破岩效率进行了综合评判。采用H-J-C模型作为岩石的本构模型,采用非线性有限元软件LS-DYDN对钻头牙齿破岩过程进行了数值模拟,将模拟结果带入模糊综合评判法方法中对齿形进行了优选。分析结果表明,采用模糊综合评判方法能将牙齿破岩体积、破岩面积、齿坑深度及牙齿最大应力有机结合起来,为牙轮钻头每一齿圈选出破岩效率较高的齿形。Considering that the current evaluation method of rock?breaking efficiency is deficient, fuzzy compre?hensive evaluation method was used to analyze the teeth rock?breaking efficiency by using of rock breaking by using rock?breaking volume, area and depth as well as teeth life cycle?Using H?J?C model as the constitutive model of rock, non?linear finite element software LS-DYDN was applied to simulate the process of teeth rock?breaking, and then the simulated results were included into the fuzzy comprehensive evaluation method to select optimal teeth shape?It is indi?cated that the fuzzy comprehensive evaluation method can consider the rock?breaking volume, depth and maximum stress together, thereby optimizing the teeth shape for the whole teeth circle with high rock?breaking efficiency.

关 键 词：牙轮钻头 牙齿 模糊评判 破岩效率 齿圈 齿形优选 

分 类 号：TE921[石油与天然气工程—石油机械设备]