School of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun, 130022, China.
AVIC Xi'an Aircraft Industry (Group) Company LTD, Xi'an, 710089, China.
Sci Rep. 2022 Dec 19;12(1):21939. doi: 10.1038/s41598-022-26563-7.
To study the numerical relationship between the pull-out force and indentation depth of aviation wire crimp terminal, the crimping process between electrical contacts and stranded conductors and the tensile process of crimping assembly were simulated by the explicit dynamic finite element method. Regarding the variation trend of the tension of the crimping assembly with the tensile displacement during the tensile process and the failure mode, the numerical results and the experimental results showed a high degree of fit, and the relative error of the pull-out force was only 2.6%, which verified the reliability of the established numerical model. This model obtained the pull-out force curve of the crimp terminal that changes with the indentation depth. The authors suggest selecting the interval where the pull-out force is not less than 95% of the peak value, and the depth is less than the corresponding value at the peak value as the best value range of the indentation depth.
为了研究航空线压接端子拔出力与压入深度之间的数值关系，采用显式动力学有限元法模拟了电接触件与多股导线的压接过程和压接组件的拉伸过程。针对拉伸过程中压接组件的张力随拉伸位移的变化趋势和失效模式，数值结果与实验结果高度吻合，拔出力的相对误差仅为 2.6%，验证了所建立的数值模型的可靠性。该模型获得了随压入深度变化的压接端子拔出力曲线。作者建议选择拔出力不小于峰值 95%的区间，深度小于峰值对应的深度作为压入深度的最佳值范围。
