纤维金属层板鸟体高速冲击损伤预测及失效分析OA北大核心CSTPCD
Damage Prediction and Failure Mechanism of Fiber Metal Laminates under High Velocity Bird Impact
考虑鸟体冲击对航空安全造成的潜在风险,针对航空结构中常用的纤维金属层板,基于连续损伤力学建立了非线性有限元模型,对其在鸟体高速冲击下的力学行为进行了研究.引入Mie-Grüneisen状态方程描述鸟体高速冲击下的类流体力学行为并采用光滑粒子流体动力学法(SPH)对鸟体进行建模.采用单向纤维增强复合材料本构模型编写VUMAT子程序对复合材料层内损伤进行预测.对于铝合金损伤和界面分层分别引入Johnson-Cook金属本构模型和双线性内聚力模型进行模拟.基于ABAQUS/Explicit显示求解模块,对纤维金属层板在不同鸟体质量和冲击速度工况下的动态响应进行模拟,分析了层板的损伤特性及材料的失效机理,为鸟体冲击纤维金属层板数值分析问题提供参考.
For the potential risk to aviation safety caused by bird impact,a nonlinear finite element model based on continuum damage mechanics is developed for fiber-metal laminates commonly used in aviation structures to investigate their mechanical behavior under the high velocity bird impact.The Mie-Grüneisen equation of state is introduced to describe the hydrodynamic-like behavior of bird under high velocity impact and the adopted the smooth particle hydrodynamics (SPH) method to model the bird.A unidirectional composite intra-laminar damage prediction model considering strain rate is adopted and the VUMAT subroutine is written.Johnson-Cook model and bilinear cohesive zone model are applied to identify the aluminum layer damage and the delamination of interface.Based on ABAQUS/Explicit solver module,the dynamic response of fiber metal laminate under different bird masses and impact velocity conditions is simulated.The damage characteristics of the laminates and the material failure mechanism are analyzed in detail,which provides a reference for the numerical analysis of the bird impact issues on the fiber metal laminates.
杨志贤;王道坤;张超
江苏大学机械工程学院,江苏镇江 212013
金属材料
鸟体冲击数值模拟纤维金属层板损伤
Bird impactSimulationFiber metal laminateDamage
《材料科学与工程学报》 2024 (004)
593-601 / 9
江苏省自然科学基金项目(BK20231319);航空航天结构力学及控制全国重点实验开放课题项目(MCASE-0124G03)
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