模拟月壤钻进力载建模及试验验证  

Mechanics Modeling and Experimental Validation for Lunar Regolith Simulant Drilling

作　　者：唐钧跃 全齐全[1] 姜生元[1] 侯绪研[1] 邓宗全[1] 

机构地区：[1]哈尔滨工业大学机器人技术与系统国家重点实验室,哈尔滨150001

出　　处：《机械工程学报》2017年第7期85-93,共9页Journal of Mechanical Engineering

基　　金：国家自然科学基金(61403106);高等学校学科创新引智计划(B07018);哈尔滨工业大学科研创新基金(HIT.NSRIF.2014051)资助项目

摘　　要：我国探月三期工程无人自主采样任务将利用钻取采样的方式获取深层月壤样品。由于不同月壤组分的机械特性存在显著差异,且采样点处沿深度方向月壤组分分布具有随机性,钻进过程中采样装置所受钻进负载极有可能发生剧烈波动,严重影响钻进稳定性。为保证采样任务的顺利实施,采样装置需要在有限的钻进功耗和钻压力条件下,及时调整合适的钻进工艺参数,控制钻进负载在合理范围内,降低采样风险。分析钻具作用下月壤的失效形式及运移状态,提出填充率概念用以定量描述螺旋钻杆的排屑状况,基于螺旋输送理论建立两种典型工况下的钻进力载模型。多维钻进工艺参数下的模拟月壤钻进试验表明:填充率指标能够准确描述螺旋钻杆的排屑状况;钻进力载模型能够有效预测钻进负载。Drilling and coring is adopted as an effective method for acquiring deep sample by the autonomous sampling mission in the third phase of China lunar exploration. Since the mechanical properties of different lunar regolith components are distinct and the components in longitudinal direction are distributed randomly, the drilling loads may fluctuate heavily, affecting the stability of drilling process. To secure the sampling mission, the drilling device should be adjusted to suitable drilling parameters promptly and control the drilling loads online under limited drilling power and weight of bit. The failure mode and conveyance of lunar regolith under the effect of drill tool are analyzed and a new concept of filling rate of auger flute （FRAF） is proposed to describe the auger＇s conveyance in quantity. Based on the screw conveyance theory, a drilling load model under two conventional drilling conditions is established. Experiments in lunar regolith simulant under multi-dimension drilling parameters on the ground indicate that FRAF index reflects accurately the cuttings removal and this drilling load model estimates the drilling loads well.

关 键 词：月面钻取采样 钻进负载 填充率 钻进工艺参数 

分 类 号：TH162[机械工程—机械制造及自动化] V46[航空宇航科学与技术—航空宇航制造工程]