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| Investigation on the equivalent flexural rigidity and the longitudinal dislocation of segment joint based on 3D contact finite element analysis |
| Received:April 09, 2019 Revised:June 12, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20190409001 |
| KeyWord:segment joint equivalent flexural rigidity surrogate model longitudinal dislocation 3D contact finite element |
| Author | Institution |
| 冉春江 |
大连理工大学 工程力学系, 工业装备结构分析国家重点实验室, 大连 |
| 付强 |
大连理工大学 工程力学系, 工业装备结构分析国家重点实验室, 大连 |
| 杨海天 |
大连理工大学 工程力学系, 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| Regarding the insufficient consideration of on overall equivalency between the 3D-model and equivalent beam-spring model for the segment joint of a shield funnelling machine,a new method is proposed to evaluate the equivalent flexural rigidity by solving a deflection equivalence based inverse problem,in which the result of 3D contact FE simulation is taken as an alternative of experiment.A Kriging surrogate model is constructed to describe the nonlinear relationship between the equivalent flexural rigidity and internal force,and is employed to develop a numerical algorithm for the structural analysis of the segment-joint with nonlinear joint flexural rigidity.In comparison with 3D FE simulation,the proposed method can effectively predict the internal force and deformation in the view on a whole.In addition,a deeper investigation is given to the impacts of the bolt hole clearance and liner constitutive model on the longitudinal dislocation of the segment joint via the 3D contact FE simulation. |
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