Multidisciplinary design optimization of hard rock tunnel boring machine using collaborative optimization

Factors influencing performance of hard rock tunnel boring machines

Intact rock properties together with rock mass characteristics should be well investigated for selection of proper tunnel boring machine (TBM) for tunneling in various ground conditions. This is due to the significant impact of rock mass characteristics on machine performance. TBMs are site specific and designed for optimal performance in given ground conditions. When selected and put to work a...

Simulation Analysis of Rock Braking Mechanism of Tunnel Boring Machine

Original scientific paper Aiming at answering the questions of wear and failure of hob in the rock breaking process, the rock breaking process was simulated in different broken rock conditions by using finite element method. The relationship between normal force, lateral force, rolling force and time was obtained by rock breaking simulation analysis on the single edge disc cutter. The rock stre...

Design and Optimization of Tunnel Boring Machines by Simulating the Cutting Rock Process using the Discrete Element Method

Nowadays there is a large number of tunneling projects in progress, mainly in Europe, both for roads and transport supplies. Performance prediction of tunnel boring machines (TBM) and the determination of some design parameters have become crucial, as they are critical elements in planning a project of mechanical excavation. In this paper we use the Discrete Element Method (DEM) to build models...

Distributed Multidisciplinary Design and Collaborative Optimization

1. Summary These notes describe some recent ideas for distributed design and their application to large-scale aerospace systems. In this type of multidisciplinary optimization, design tasks are decomposed into domain-specific subproblems, and coordinated to achieve an optimal system. Focusing on collaborative optimization, one form of design decomposition, the notes detail the methods, summariz...

Collaborative Multidisciplinary Design Optimization for Conceptual Design of Complex Products