基于VUMAT方法的TBM滚刀破岩仿真与试验被引量：3

Numerical simulation and experiment of TBM hob rock breaking based on VUMAT method

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摘要针对隧道掘进机（Tunnel Boring Machine,TBM）刀盘设计过程中的滚刀间距确定问题,基于ABAQUS平台,采用用户定义子程序（User Material Subroutine,VUMAT）方法,编制了考虑损伤断裂和混合强化的岩石本构模型,进行了滚刀破岩过程的仿真计算。通过回转切削破岩试验,验证了仿真模型。使用经过验证的仿真模型开展成组计算,研究了刀间距对滚刀破岩法向力、滚动力和比能的影响,发现法向力和滚动力随刀间距增大而线性增大,TBM切削硬质砂岩的最优刀间距介于70~80 mm之间。 The hob spacingdeterminationproblem was existed in the process of cutter design of tunnel boring machine （TBM）. the rock breaking simulation was performedusing User Material Subroutine （VUMAT） based on the ABAQUS platform. The constitutive model of rock considering the damage fracture and mixed hardening was established. The simulation calculation of rock breaking process with hob was performed. The simulation model was verified through the rotational cutting rock breaking experiment. Groups of simulations were performed using the verified numerical model to study the influence of cutter spacing on the normal force, the rolling force and the specific energy. It was found that the normal and rolling forces linearly increased with the cutter spacing. The optimal cutter spacing of hard sandstonewas between 70 mm and 80 mm.

作者张康智张文彬

机构地区西安航空学院机械工程学院西安庆安航空试验设备有限责任公司

出处《机械设计》 CSCD 北大核心 2016年第8期88-94,共7页 Journal of Machine Design

关键词破岩仿真岩石本构 VUMAT 破岩试验 rock cutting simulation constitutive model of rock VUMAT rock cutting experiment

分类号 TU94 [建筑科学—建筑技术科学] TP391 [自动化与计算机技术—计算机应用技术]

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