Design Defects Immune Identification Methodology for Mechanical Products Based on Directed Graph of Assembly Constraint Relationship

Abstract:

In order to identify design defects in mechanical product quickly and accurately, geometric constraints relationships between mechanical parts are formulated as critical functions, assembly constraint relationship (ACR) matrix is established based on encoding of geometric constraints between mechanical parts. Directed graph is employed to describe constraint relationship of ACR matrix, the node in directed graph denotes parts number, data structure of node stores the design parameters of mechanical parts, weights of directed graph arcs represents geometric constraint type. Weights of directed graph arcs are treated as antigen, design defects for mechanical parts are treated as antibody, mutation rules such as trimming, splicing and replacement is employed to identify design defects of antigen gene. Identification example of spherical mechanism demonstrates effectiveness and accuracy of above methodologies.

• Periodical: Applied Mechanics and Materials (Volumes 365-366)
• Pages: 104-110
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.365-366.104
• Online since: August 2013
• Authors: Gang Lv, Shou Wen Fan, Lian Xu Zhou, Xin Nuo He
• Keywords: Assembly Constraint, Design Defect, Directed Graph, Immune Identification

References

[1] MEHLITZ P C. Proceeding of the 29th Annual IEEE/NASA Goddard software engineering workshop-Tutorial Notes. Washington, D.C. USA. 2005.P. 285.

[2] WeiXiang Qian et. al. Mechanical Science and Technology for Aerospace Engineering. Vol. 26(2007), P. 1257(in Chinese).

[3] ShouWen Fan, JingQi Xiong. Computer Integrated Manufacturing Systems. vol. 16(2010), P. 1151(in Chinese).

[4] DuoLi Zhang. Research on functional information-based identification engineering and identification techniques system. HeFei University of Technology, HeFei, 2005(in Chinese).

[5] DaXian Cheng: Mechanical Design Handbook(Chemical Industry Press, Chinese 2008).