Relationship between rectification moment and angle of shield based on numerical simulation |
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Authors: | Wei Sun Ming Yue and Jian Wei |
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Affiliation: | [1]School of Mechanical Engineering, Dalian University of Technology, Dalian 116028, China [2]School of Automotive Engineering, Dalian University of Technology, Dalian 116028, China |
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Abstract: | The finite element method is used to simulate the rectification process of shield machine, to study the relationship between
rectification moment and angle and to explore the influence laws of different soil parameters and buried depth on rectification
moment. It is hoped that the reference value of rectification moment can be offered to operator, and theoretical foundation
can be laid for future automatic rectification technology. The results show that the rectification moment and angle generally
exhibit good linear behavior in clay layers with different soil parameters or buried depths, and then the concept of rectification
coefficient, that is, the ratio of rectification angle to rectification moment, is proposed; different soil parameters and
buried depths have different influences on rectification coefficient, in which elastic modulus has great influence but others
have little influences; the simulations of rectification process are preformed in clay layers with different elastic modulus,
and fitting results show that elastic modulus and rectification coefficient present the quadratic function relation. |
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Keywords: | finite element method rectification moment rectification angle elastic modulus |
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