一种用于复合材料层合板螺栓连接结构强度分析的方法

doi:10.19936/j.cnki.2096-8000.20241128.006

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (11): 50-55.DOI: 10.19936/j.cnki.2096-8000.20241128.006

一种用于复合材料层合板螺栓连接结构强度分析的方法

倪凯强, 孟毛毛, 徐一新

西安爱生技术集团有限公司,西安 710065

收稿日期:2023-09-28 出版日期:2024-11-28 发布日期:2025-01-14
作者简介:倪凯强(1994—),男,硕士,工程师,研究方向为复合材料机械连接,CrystalNi714@outlook.com。

A method for strength analysis of bolted joint of composite laminates

NI Kaiqiang, MENG Maomao, XU Yixin

Xi’an ASN Technology Group Co., Ltd., Xi’an 710065, China

Received:2023-09-28 Online:2024-11-28 Published:2025-01-14

摘要/Abstract

摘要： 提出一种基于ABAQUS软件平台的自定义单元开发方法,使用该方法建立的二维有限元模型可以模拟复合材料螺栓连接结构完整的非线性力学行为。通过拟合单钉连接结构的载荷-位移曲线确定自定义单元的单元行为,将自定义单元应用于多钉连接结构的二维有限元模型中,研究其钉载分布与极限强度。与试验结果的对比表明,模型计算结果能够准确预测多钉连接结构的钉载分布、损伤演化和极限强度。该方法结果可靠,计算效率高,适用于复合材料层合板多钉连接结构的工程计算分析。

关键词: 复合材料螺栓连接, 非线性力学行为, 自定义单元, 钉载分配, 连接强度

Abstract: A development method of user defined element based on ABAQUS platform is proposed. A 2D FE model established using this method can simulate the nonlinear mechanical behavior of composite bolted joint. By fitting the load-displacement curve of the single bolted joint, the element behavior of user defined element are determined, which is applied to a two-dimensional finite element model of the multi-bolted joint to study the distribution of the bolt loads and the ultimate strength of the joint. Compared with the test results, the model results can accurately predict the distribution of bolt loads, damage evolution and ultimate strength of multi-bolted joint. This method has reliable results and high computational efficiency, and is suitable for engineering calculation and analysis of multi-bolted joint of composite laminate.

Key words: composite bolted joint, non-linear mechanical behavior, user defined element, bolt load distribution, joint strength

中图分类号:

TB332

倪凯强, 孟毛毛, 徐一新. 一种用于复合材料层合板螺栓连接结构强度分析的方法[J]. 复合材料科学与工程, 2024, 0(11): 50-55.

NI Kaiqiang, MENG Maomao, XU Yixin. A method for strength analysis of bolted joint of composite laminates[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(11): 50-55.

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一种用于复合材料层合板螺栓连接结构强度分析的方法

A method for strength analysis of bolted joint of composite laminates

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