Abstract: Aiming at the problems of cumbersome operation and high repeatability of grab bucket strength analysis, combining with the secondary development function of Hypermesh and the objectoriented method of C#, a set of process automatic system was developed. Firstly, the finite element model of grab bucket was established by using conventional finite element analysis method, and the force of the grab bucket was analyzed in four different digging depths. Based on the analysis of force, the strength analysis of the grab bucket was performed. Then, the system graphical user interface was built by using the C# objectoriented method, the system graphical user interface was connected with Hypermesh, Optistruct and Hyperview software based on the underlying code, and the automated system for grab bucket strength analysis process was developed. Different types of grab bucket were analyzed to verify the operability of the system. Lastly, in four different excavation depths, conventional finite element analysis method and the system analysis method were used to evaluate the error analysis of system. The results indicate that the maximum stress obtained by the two different methods differs by 0.01MPa, and the error analysis of the stress is about 1%. The system can provide a simple and efficient process automatic solution for grab bucket strength analysis.

Key words:  grab bucket; strength analysis ;process automation; Hypermesh; model library

ZHAO Xia, LIU Xue-wen. Process automatic system for grab bucket strength analysis［J］.Journal of Mechanical & Electrical Engineering, 2021,38(11):1479-1485.