The Vibration Characteristics of Cracked Rotor Based on Virtual Prototyping Technology

2012 ◽  
Vol 562-564 ◽  
pp. 1438-1441
Author(s):  
Li Hua Fu ◽  
Juan Juan Jiang ◽  
Dai Xing Zhang ◽  
Hai Quan Li ◽  
Hua Song ◽  
...  

In this article, the Pro/Engineer virtual prototyping technology is used for three dimensional entity modeling, assembly, and simulation analysis of 1000KN·m large backstop in four design plans to confirm the integrity and assembling of backstop. By using the ANSYS/LS-DYNA software, it makes numerical simulation analysis of the backstop in non-return process, and through the analysis comparison to the simulation result, it obtains the optimization design plan of the 1000KN·m backstop.


2008 ◽  
Vol 392-394 ◽  
pp. 884-890 ◽  
Author(s):  
Bingbing Yan ◽  
Fu Jun Ren ◽  
Y.C. Jiang

Virtual prototyping technology as a key technology for agile manufacturing can deal with multidisciplinary knowledge across different fields. In the complex product development process, the exchange between heterogeneous data in heterogeneous environment is a universal problem encountered, which increases the complexity of collaborative parallel design of virtual prototype. Taking the product models as carriers and the different function requirements as clues, the knowledge structure and expression of product information in various fields was studied. By adopting component object model technology, direct geometry access technology, behavioural modeling technology and parametric design thinking, the interaction among tools in various function units was realized, and the effective integration of information and function in multi-fields was accomplished, the parameter-driven virtual prototype architecture of complex product based on the integration of information and function was created. The feasibility of this architecture has been verified by the actual engineering. This plan provides an effective way to carry out virtual prototype projects for enterprise.


Author(s):  
Yukio Ishida ◽  
Tsuyoshi Inoue

Detection of a rotor crack based on the nonlinear vibration diagnosis using periodic excitation force is investigated. Due to the open-close mechanism of the crack, the equations of motion of a cracked rotor have linear and nonlinear parametric terms. When a periodic excitation force is applied to the cracked rotor, various kinds of resonances due to the unique vibration characteristics of a crack. Furthermore, types of resonances, resonance points and dominant frequency component of these resonances are clarified theoretically and experimentally. These results enable us to detect a crack on-line without stopping the system.


2013 ◽  
Vol 721 ◽  
pp. 691-694 ◽  
Author(s):  
Zhen Li ◽  
Xiao Jing Shang

Design a scalable plastering machine for the traditional plastering machine problems in the structural design. On the basis of the three-dimensional solid model established using PRO / E, we make the simulation for the institutions overall course of the campaign through using ADAMS, to detected design products by experience whether meet the actual requirements or not, but also provide a theoretical basis for the optimized design of wall plastering machine in the future.


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