Explicit Dynamics Simulation Research on Soil Cutting of Shield Machine Based on LS-DYNA

X.G. Wang; Wei Guo; Jian Qin Liu

doi:10.4028/www.scientific.net/MSF.697-698.642

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The Application of AD Theory in the Study of Active Steering System
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Explicit Dynamics Simulation Research on Soil Cutting of Shield Machine Based on LS-DYNA
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The Design and Optimization of Large-Scales Heavy Gantry NC Machining Center Based on Finite Element Method
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Explicit Dynamics Simulation Research on Soil Cutting of Shield Machine Based on LS-DYNA

Abstract:

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.