Optimal Layout Design for Thrust Systems in Earth Pressure Balance Shield Machines Under Sudden Loads

• Published in: Arabian journal for science and engineering (2011) Vol. 46; no. 3; pp. 2793 - 2802
• Main Authors: Deng, K. S., Li, Y. Y., Zhang, X. M., Hu, R. C.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2021; Springer Nature B.V
• Subjects: Adaptive systems; Coefficient of variation; Earth pressure; Engineering; Humanities and Social Sciences; Layouts; Loads (forces); Mathematical models; multidisciplinary; Parameters; Propulsion system design; Research Article-Mechanical Engineering; Science; Nonuniform layout; Adaptive mechanical model; Sudden load; Propulsion system; Relative variation coefficient
• ISSN: 2193-567X; 1319-8025; 2191-4281
• DOI: 10.1007/s13369-020-05269-w

This study explores an optimised thrust system layout for addressing sudden loads. Firstly, an adaptive mechanical model of a propulsion system under sudden external loads is established. Secondly, the relative variation coefficient ( CRV ), an evaluation index of thrust suitable for sudden loads, is proposed. Finally, on the basis of this adaptive mechanical model, the layout parameters of a uniform propulsion system are optimised to determine the layout parameters of a nonuniform propulsion system, and the prototypes of these two layout forms are virtually simulated. Simulation results are evaluated according to the CRV value. Results show that the optimised nonuniform propulsion system has a small CRV value and a good stratum adaptability. This work lays out a theoretical foundation and offers a solution for designing nonuniform propulsion systems.