|
EXPERT SYSTEM OF ENGINEERING COMPONENT
DESIGN BASED ON FRACTURE MECHANICS*
Li Qingfen Cui Zhaoxia
College of Mechanical and Electrical Engineering, Harbin Engineering University,
Harbin 150001, China
Gao Jianhua
Shanghai Jiaotong University
Wang Junjie Ni Huocai
Zhengzhou Research Institute of
Mechanical and Electrical Engineering
|
Abstract: An expert system of engineering component design and analysis based on fracture mechanics (FM) theory, AFES, is developed . It can simulate a human expert to make design and analysis scheme for several typical engineering components. Stress intensity factor K, crack opening displacement (COD) and J-integral criterions are used for assembled vats, pressure vessels, welding structures and rotation components: FATT criterion is used for heavy casting / forging components. The AFES consists of eight main functional parts:
a general inference engine, a set of knowledge bases and data bases, an explanation model, an user interface model, a bases-administration system, a calculating model and an on-line help service. The AFES is an open system which may be broadened and perfected to cover a wider range of engineering application through modification and enlargement of the knowledge and data bases. The system may be a useful tool to assist a non-expert (with basic mechanics knowledge) make a quick access in engineering component design and analysis.
Key words:
Expert system Fracture mechanics Engineering component design
*
This project is supported by Provincial Natural Science Foundation of
Heilongjiang (No.E0903). Selected from Proceedings of 2000 the First
International Conference on Mechanical Engineering. revised
manuscript July 26, 2001 |