摘要
筋条-蒙皮界面失效对复合材料加筋壁板在后屈曲阶段的承载能力具有重大影响。研究表明,厚度方向的压缩会对复合材料加筋壁板的筋条-蒙皮界面性能产生影响。在前人研究的基础上,本文以数学方法推导出一种考虑厚度方向影响筋条-蒙皮界面失效表征方程。建立单元表征试验的有限元模型,利用虚拟试验确定了各项待定系数,给出了失效包面。该方法可用于指导单元表征试验的实施。
Through-thickness compressive stress of composite laminates can inhibit the inter-laminar failure which has been proved by experiments. The stringer/skin interface damage has an significant impact on the carriage capacity of the stiffened composite structure at post-buckling stage. On the basis of previous studies, a delamination damage criterion of stringer/skin interface considering effects of through-thickness compression was established by mathematical method. CAE models of unit characterization tests were build to obtain undetermined coefficients, in the end, a failure envelope was draw.
作者
胡波涛
孙晓博
梁青祥龙
HU Botao;SUN Xiaobo;LIANG Qingxianglong(Full Scale Aircraft Structure Static/Faligue Aeronautic Science and Technology Laboratory Aircraft Strength Research Institute of China,Xi'an 710065;Xian Modern Control and Technology Institute,China North Industries Group Corporation Limited,Xi'an 710065)
出处
《纤维复合材料》
CAS
2022年第2期37-43,共7页
Fiber Composites
关键词
后屈曲
复合材料
界面
表征
post-buckling
composite
interface
characterization
