Research on an effective algorithm for theoretical stress concentration coefficient
CHEN Rong1, HUANG Ning2
1. Yueyang Vocationaltechnical College, Yueyang 414000, China;
2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
Abstract On the basis of finite element analysis, the maximum principal stress finite element method was presented to solve the theoretical stress concentration factor Kt, the result of which was consistent with the value of theoretical calculations and experimental measurements. Moreover, further analysis on the impact of refining the grid was done. The results showed that when the grid was refined to a certain extent, the accuracy was improved and the stress concentration factor tended to a stable value. The maximum principal stress orientation agreed with stress orientation of the fatigue life estimation, which further ensures the accuracy of the calculation of life. This approach provides an important basis for the parameters for the fatigue analysis．
CHEN Rong, HUANG Ning. Research on an effective algorithm for theoretical stress concentration coefficient. Chinese Journal of Engineering Design, 2010, 17(3): 215-218.
