摘要
结构破坏预估一直是工程结构设计中的关键问题。在某型飞机翼身组合体整体模型虚拟试验结果基础上,针对受载严重的机翼结构和起落架连接区结构,建立了非线性分析子模型,在对其有效性进行验证后,采用子模型技术分别对机翼极限承载能力和起落架连接区细节应力进行了虚拟试验,预估了结构可能的破坏部位及其破坏载荷,起到了辅助与指导物理试验的作用。子模型技术能在兼顾计算效率和分析精度的基础上,灵活地对复杂结构中的局部区域进行深入分析,必将在飞机型号研制中发挥更加重要的作用。
Failure prediction is always a key problem in engineering structure design. Based on virtual testing results of the whole model for the wing-body of a certain aircraft,nonlinear submodels are established for wing structure and landing gear zone which are subjected to severe loads. Sub-modeling technique is employed to analyze the load-carrying capacity and detailed stress distribution for the wing and landing gear zone respectively after the submodels are validated,failure location and load are predicted to assist and guide the physical testing. Local region of complicated structures can be analyzed thoroughly by submodeling technique,and efficiency and precision can be taken into account simultaneously. Sub-modeling technique will play a more important role in aircraft development.
作者
张维
郭瑜超
万春华
聂小华
ZHANG Wei;GUO Yu-chao;WAN Chun-hua;NIE Xiao-hua(Aircraft Strength Research Institute,AVIC,Xi＇an 710065,China)
出处
《航空计算技术》
2018年第4期53-56,共4页
Aeronautical Computing Technique
基金
民机科研项目资助(MJ-2015-F-027)
关键词
子模型
飞机
虚拟试验
承载能力
破坏
sub- modeling
aircraft
virtual testing
load- carrying capacity
failure
