Explicit Dynamics Simulation Research on Soil Cutting of Shield Machine Based on LS-DYNA
In this paper, the universal nonlinear finite element software LS-DYNA is applied to the explicit dynamics simulation of shield’s soil cutting in tunneling, and using Non-reflective boundary of DYNA’s module, accurately conduct the dynamic analysis of shield’s tunneling. Finally Making visualization processing on the computed results with the post-processing soft LS-PREPOST. Compared with results of static’s simulation and small-sized shield experiment indoor, the explicit dynamics simulation used in the paper is in good agreement with them. Through the alleosis chat of internal energy, we can see that LS-DYNA can be commendably utilized to explicit dynamics simulation of soil cutting of shield’s cutter, simultaneously, we also concluded that moderately increasing the cutter opening rate will have a significant impact on improving the unearthed rate of soil residue, tunneling efficiency and lowering the total thrust force of the shield.
Tian Huang, Dawei Zhang, Bin Lin, Anping Xu, Yanling Tian and Weiguo Gao
X.G. Wang et al., "Explicit Dynamics Simulation Research on Soil Cutting of Shield Machine Based on LS-DYNA", Materials Science Forum, Vols. 697-698, pp. 642-645, 2012