摘要
加筋板在出现屈曲之后并未完全失效,仍然具有较高的承载能力。本研究利用ABAQUS软件建立由shell-solid单元组合的复合材料加筋板极限承载能力分析模型。复合材料层合板和界面材料的破坏通过子程序判断,子程序中编写了Hashin和Quads失效判据,并引入材料刚度退化准则。通过有限元模拟方法分析复合材料加筋板在轴向压缩载荷下的极限承载能力,并详细给出3种失效模式的破坏过程,仿真结果与试验结果相比误差较小,说明所建立模型及USDFLD程序是正确的。
The stiffened composite panels still have enough strength after the bucking, the study of the ultimate strength is very necessary. A shell-solid finite element model is built by using ABAQUS software to analyze the ultimate strength. In the model, user subroutine is led into the analysis of the failure of materials. In the user subroutine, Hashin failure criteria and Quads failure criteria are programed to identify the damage occurrence, and the degradation criterion is used to simulate the failure progress of stiffened composite panels. The processes of three failure modes are discussed in detail. The error of simulation result compared with the experimental data is very small, it is shown that the proposed method is correct.
出处
《沈阳航空航天大学学报》
2015年第4期37-43,共7页
Journal of Shenyang Aerospace University
基金
国家自然科学基金(项目编号:11272217)
航空科学基金(项目编号:2013ZA54004)
辽宁省教育厅(项目编号:L2014072)
国防基础科研计划基金(项目编号:JCKY201305B002
XY2015032)
关键词
复合材料
加筋板
脱粘
极限承载能力
子程序
composites
stiffened panels
debonding
ultimate strength
user subroutine
