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

作　　者：倪凯强 孟毛毛 徐一新 NI Kaiqiang;MENG Maomao;XU Yixin(Xi’an ASN Technology Group Co.,Ltd.,Xi’an 710065,China)

机构地区：[1]西安爱生技术集团有限公司,西安710065

出　　处：《复合材料科学与工程》2024年第11期50-55,共6页Composites Science and Engineering

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。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 fit ting the load-displacement curve of the single bolted joint,the element behavior of user defined element are deter mined,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 accu rately predict the distribution of bolt loads,damage evolution and ultimate strength of multi-bolted joint.This meth od has reliable results and high computational efficiency,and is suitable for engineering calculation and analysis of multi-bolted joint of composite laminate.

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 

分 类 号：TB332[一般工业技术—材料科学与工程]