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Analysis of Force Distribution of Four Rows of Bolts in Aircraft Fitting Joint
International Journal of Aerospace Engineering ( IF 1.4 ) Pub Date : 2021-07-14 , DOI: 10.1155/2021/9962645
Yifang Sun 1 , O. G. Grebenikov 1 , Chenghu Li 2, 3
Affiliation  

With the help of 3D modeling software and finite element analysis software, the force distribution of four rows of bolts in the aircraft fitting joint is obtained in this paper. In 3D modeling software, the solid model is segmented according to the area and height of the center of gravity of the cross-section. In finite element analysis software, the beam elements are used to replace the segmented model to obtain the internal force applied at the end of the segmented model and the stress-strain state of each segment is calculated according to the internal force applied at the end of each segment. Finally, the force distribution of the four rows of bolts is obtained according to the average force difference on the center section between the bolt rows. In order to ensure the validity of this step-by-step calculation result, it was compared with the entire calculation result. It can be concluded that the force distribution of the two calculations is consistent. Under the working conditions of the fitting joint (130 MPa), the force distribution coefficients of the four rows of bolts are 0.182, 0.215, 0.197, and 0.12. Therefore, it is feasible to use the step-by-step method to calculate the force distribution of the four rows of bolts in the fitting joint. Compared with the entire calculation, the step-by-step calculation has the advantages of less calculation amount and faster calculation speed.

中文翻译:

飞机装配件接头四排螺栓受力分布分析

借助3D建模软件和有限元分析软件,本文得到了飞机配件接头中四排螺栓的受力分布情况。在3D建模软件中,实体模型根据横截面重心的面积和高度进行分割。在有限元分析软件中,用梁单元代替分段模型,得到分段模型末端施加的内力,并根据末端施加的内力计算各段的应力应变状态。每个段。最后,根据各排螺栓中心段的平均受力差,得到四排螺栓的受力分布。为了保证这个分步计算结果的有效性,与整个计算结果进行了比较。可以得出结论,两种计算的力分布是一致的。在配合接头工况(130 MPa)下,四排螺栓的受力分布系数分别为0.182、0.215、0.197和0.12。因此,采用分步法计算装配接头中四排螺栓的受力分布是可行的。与整体计算相比,分步计算具有计算量少、计算速度快的优点。因此,采用分步法计算装配接头中四排螺栓的受力分布是可行的。与整体计算相比,分步计算具有计算量少、计算速度快的优点。因此,采用分步法计算装配接头中四排螺栓的受力分布是可行的。与整体计算相比,分步计算具有计算量少、计算速度快的优点。
更新日期:2021-07-14
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