Model Development of Stress Intensity Factor on 7057T6 Aluminum Alloy Using Extended Finite Element Method
Source abstract
Abstract
The stress intensity factor represents a vital parameter within the realm of linear elastic fracture mechanics. It acts as the cornerstone in determining crack propagation and evaluating damage tolerance. However, calculating this factor is a complex task. To surmount this challenge, models of the stress intensity factor for both edge and center cracks were developed using the extended finite element method. The result of this effort is the ability to calculate the stress intensity factor at the crack tip under different loads and normalized crack lengths. The accuracy of these calculations was confirmed by comparing them to results from the NASGRO method, and the optimal mesh sizes for both the crack elements and overall units were established. Further analysis, conducted through MATLAB’s regression analysis, led to the development of an empirical model. This model was found to be both simple and reliable, making it an ideal tool for engineering applications.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Numerical methods in engineering · Non-Destructive Testing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Engineering, Lishui University, Lishui 323000, China
State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
Zhejiang Guanlin Machinery Inc., Anji 313300, China
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
Key Laboratory of Special Purpose Equipment and Advanced Processing Technology at Zhejiang University of Technology, Ministry of Education, Hangzhou 310014, China
Funding
Key Research and Development Program of Zhejiang Province · National Natural Science Foundation of China · State Key Laboratory of Fluid Power and Mechatronic Systems · Lishui Science and Technology Plan Project
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