A Two-Dimensional Model for Pin-Load Distribution and Failure Analysis of Composite Bolted Joints

被引：8

作者：

Li, Binkai ^{[1
]}

Gong, Yu ^{[2
]}

Xiao, Hao ^{[3
]}

Gao, Yukui ^{[4
,5
]}

Liang, Enquan ^{[3
]}

机构：

[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Zhangwu Rd 100, Shanghai 200092, Peoples R China

[2] Chongqing Univ, Coll Aerosp Engn, Chongqing 400044, Peoples R China

[3] Shanghai Aircraft Design & Res Inst, Jinke Rd 5188, Shanghai 201210, Peoples R China

[4] Tongji Univ, Sch Mat Sci & Engn, Caoan Rd 4800, Shanghai 201804, Peoples R China

[5] Tongji Univ, Shanghai Key Lab R&D Metall Funct Mat, Caoan Rd 4800, Shanghai 201804, Peoples R China

来源：

MATERIALS | 2021年 / 14卷 / 13期

基金：

中国国家自然科学基金;

关键词：

composite laminated plate; pin load; joint strength; failure mode; MECHANICALLY FASTENED JOINTS; STRENGTH PREDICTION; DOUBLE-LAP; PROGRESSIVE FAILURE; DAMAGE; STIFFNESS;

D O I：

10.3390/ma14133646

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multibolt composite joints are widely used in aircraft structures. The determination of the pin-load distribution among the bolts is a critical step in the failure prediction of bolted joints. In this paper, a two-dimensional model of the multibolt composite structure is established for the pin-load distribution analysis. Its accuracy is validated by experimental results and the results from a 3D finite element model. Based on the determined pin-load distribution, FE models for a laminated plate with three-row fastener joints are built for failure prediction. Hashin stress criteria and the degradation guidelines of the material stiffness with respect to the different failure modes proposed by Tserpes are applied for the failure evaluation and the material degradation, respectively. The failure location and ultimate load are well predicted, which further validates the effectiveness and applicability of the proposed model for the pin-load distribution analysis.

引用

页数：15

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