| Digital prototyping technology is an emerging engineering technology, by means of this technology, engineers can set up virtual models of mechanical systems on computers in order to simulate systems kinematics and dynamics related features in real environment. Engineers can also optimize the design of mechanical systems according to the simulation results, finding mechanical system problems and potential defect in the stage of product design, eliminating the dependence on physical prototyping in traditional design, shortening the product development cycles, reducing R&D costs and making enterprise more competitive in market competition. However, the credibility of digital prototyping technology largely depends on computer simulation technology and related analysis software. Although there are many powerful modeling and analysis software, it is difficult to simulate the whole mechanical working process through single software. Based on this situation, the major software companies work together, providing interfaces of software in different areas to achieve connections between different software, and completing the whole simulation process of mechanical systems.Entire Cross Section Tunnel Boring Machine, short for boring machine, is a kind of technology intensive engineering equipment, integrated with mechanical, electrical, hydraulic, measurement and control technology, used in underground tunnel construction. With the application of boring machine been constantly spreading, research on boring machine has been from the study of the tunneling mechanism and the mechanical structure of the boring machine to how to choose a reasonable cutting way according to the geological conditions, to find the fastest cutting velocity and maximize the efficiency of construction; under certain geological conditions, how to select the machine’s operating parameters which appropriate to geological conditions, to ensure the stability of the cutting surface, which can protect earth surface from generating excessive deformation and make tunnel construction bring the smallest disturbance to the ground. Boring machine as large machinery equipment, featured as complex design, long manufacturing cycle, high R&D costs, and therefore digital prototyping technology can be applied to the entire process of design, which can ensure the machine’s design quality, shorten design cycles and reduce design costs.The study object of this is the digital prototyping ofΦ6.28m earth pressure balance (EPB) TBM. The thesis is mainly divided into the following three parts. The first part is using ADAMS and MATLAB/Simulink to make dynamics and control co-simulation for digital prototyping, using PID control strategy, study the control performance of the control for thrust-velocity and find the change patterns of the velocity response curve, to give some guidance for the construction process. The second part is, by using co-simulation method, achieving the control for attitude of boring machine. Mainly studying the method of correcting deviation when boring machine deviating from the intended axis on horizontal plane, applying this method to achieve the construction of small radius curves. And verify the method on the digital prototyping. The third part is making hybrid rigid-flexible dynamic simulation and finite element analysis by using ADAMS and ANSYS for segment erector to make simulation more realistic. From the simulation results, comparing the effect for the end of the segment erector movement, the change of the external forces and stress and strain of the erector head, after the erector head replaced from the rigid body to the flexible body; And through the modal analysis for the erector head, finding the law of the vibration of the erector head, to provide appropriate and reliable reference for.actual patch process.By applying digital prototyping technology, this paper achieves to make dynamics related co-simulation for TBM. This method is not only suitable for the design and development of boring machine, but also it can be extended to R&D for other complicated mechanical system. So the research methods in this paper have the significant practical value. |
