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Huo J.,Dalian University of Technology | Zhao H.,Northern Heavy Shenyang Heavy Machinery Group Co. | Xu Z.,Dalian University of Technology | Sun W.,Dalian University of Technology | Zhao Y.,Dalian University of Technology
Advanced Materials Research | Year: 2011

The multi-spiral layout pattern has been widely adopted in practice during the layout design of the cutters. Considering the engineering technical requirements and the corresponding structure design requirements of the cutter head, this study formulates a nonlinear multi-objective mathematical model with multiple constraints for the cutters plane layout design based on a multi-spiral layout pattern. And then a genetic algorithm is employed to solve a cutters' multi-spiral layout problem. An instance of the cutters' plane layout design was solved by the proposed methods using a multi-spiral layout pattern. Experimental results showed the effectiveness of the method of combining the mathematical model with the algorithms, and the pros and cons of the multi-spiral layout pattern. © (2011) Trans Tech Publications, Switzerland.


Huo J.,Dalian University of Technology | Sun W.,Dalian University of Technology | Chen J.,Dalian University of Technology | Su P.,Northern Heavy Shenyang Heavy Machinery Group Co. | Deng L.,Northern Heavy Shenyang Heavy Machinery Group Co.
Journal of Mechanical Science and Technology | Year: 2010

Improving of the quality of the disc cutters' plane layout design of the full-face rock tunnel boring machine (TBM) is the most effective way to improve the global performance of a TBM. The plane layout design of disc cutters contains multiple complex engineering technical requirements and belongs to a multi-objective optimization problem with multiple nonlinear constraints. Based on analysis of the technical requirements of the plane layout problem, an optimizing mathematical model was built. To obtain a set of design schemes for engineers to choose from, a multi-objective genetic algorithm (MOGA) was applied to carry out the optimization of the mathematical model. A constraint-domination principle was utilized to handle the constraints, and a nondominated sorting method was adopted to obtain Pareto solutions. Simulation results showed that the proposed method was efficient and accurate in obtaining the Pareto layout solutions. © KSME & Springer 2010.


Sun W.,Dalian University of Technology | Huo J.,Dalian University of Technology | Chen J.,Dalian University of Technology | Li Z.,Dalian University of Technology | And 4 more authors.
Journal of Mechanical Science and Technology | Year: 2011

In rock TBM design the disc cutters' layout design of the full-face rock tunnel boring machine (TBM) is one of the key technologies. However, there are few published papers in literatures for various reasons. In this paper, based on the engineering technical requirements and the corresponding cutter head's structure design requirements, a nonlinear multi-objective disc cutters' layout mathematical model with complex constraints and the corresponding multi-stage solution strategy are presented, in which the whole disc cutters' layout design process is decomposed into the disc cutters' spacing design and the disc cutters' plane layout design. A numerical simulation method based on the FEM theory is adopted to simulate the rock chipping process induced by three TBM disc cutters to determine the optimal cutter spacing. And a cooperative coevolutionary genetic algorithm (CCGA) is adopted to solve the disc cutters' plane layout design problem. Finally, a disc cutters' layout design instance of the TBM is presented to demonstrate the feasibility and effectiveness of the proposed method. The computational results show that the proposed method can be used to solve the disc cutters' layout design problem of the TBM and provide various layout schemes within short running times for the engineers to choose from. © 2011 The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg.

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