在冲击模拟中采用三维应力-应变状态的聚合物复合材料数学模型的比较评估

Q3 Earth and Planetary Sciences
Aleksandr Bolshikh, Kirill Shelkov, Dmitry Borovkov, Nikolay Turbin
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引用次数: 0

摘要

在飞机运行过程中,由于对飞机结构的冲击而造成的意外机械损伤可以导致容易检测到的(可见的冲击损伤- vid)和在目视检查生产或操作损伤(几乎不可见的冲击损伤- bvid)期间无法检测到的损伤。同时,对于每一类损伤,必须提供所需载荷的强度,因此,例如,对于第一类损伤(BVID),必须在整个使用寿命内提供来自设计载荷的静强度。这一要求是通过实验和计算方法来实现的。为了使用有限元法(FEM)进行数值计算,有必要使用PCM模型,该模型可以高精度地再现撞击造成的损伤。目前,基于平面应力-应变状态(PSSS)实现的单层强度准则被广泛使用,该准则只考虑层平面内应力张量的分量。但在碰撞的情况下,来自层的方向也起着重要的作用。所提出的聚合物复合材料(PCM)数学模型的科学新颖之处在于在体积有限元中增加了考虑层面方向的单层强度准则。本文对冲击模拟中PCM强度准则进行了对比评估,Hu等人(Polymers 14: 2946, 2022), Wang等人(基于裂纹带理论和连续损伤力学的层合复合材料三维渐进损伤建模,2015)。开发了具有层间内聚界面的PCM样品的逐层建模模型,以解释撞击引起的分层Falcó等。(复合材料结构190:137-159,2018)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Comparative evaluation of mathematical models of polymer composite material with the implementation of a three-dimensional stress–strain state in the simulation of impact

Comparative evaluation of mathematical models of polymer composite material with the implementation of a three-dimensional stress–strain state in the simulation of impact

Comparative evaluation of mathematical models of polymer composite material with the implementation of a three-dimensional stress–strain state in the simulation of impact

Accidental mechanical damage resulting from impact on the structure of the aircraft during its operation can lead to both easily detectable (visible impact damage—VID) and non-detectable damage during visual inspection production or operational damage (barely visible impact damage—BVID). At the same time, for each category of damage, strength from the required loads must be provided, so, for example, for damage of the first category (BVID), static strength from the design load must be provided throughout the entire service life. The provision of this requirement is carried out by experimental and computational methods. To carry out numerical calculations using the finite element method (FEM), it is necessary to use the PCM model, which will allow reproducing the damage resulting from the impact with high accuracy. Currently, monolayer strength criteria based on the implementation of a plane stress–strain state (PSSS), which takes into account only the components of the stress tensor in the plane of the layer, are widely used. But in case of impact, the direction from the layer also plays an important role. The scientific novelty of the proposed mathematical model of polymer composite material (PCM) is the addition of a monolayer strength criterion for volumetric FE, taking into account the direction from the plane of the layer. In this paper, a comparative assessment of the strength criteria for PCM in the simulation of impact was carried out Hu et al. (Polymers 14: 2946, 2022), Wang et al. (3D Progressive damage modeling for laminated composite based on crack band theory and continuum damage mechanics, 2015). Models with layer-by-layer modeling of a PCM sample with a cohesive interface between layers were developed to account for delaminations arising from impact Falcó et al. (Composite Structures 190: 137-159, 2018).

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来源期刊
Aerospace Systems
Aerospace Systems Social Sciences-Social Sciences (miscellaneous)
CiteScore
1.80
自引率
0.00%
发文量
53
期刊介绍: Aerospace Systems provides an international, peer-reviewed forum which focuses on system-level research and development regarding aeronautics and astronautics. The journal emphasizes the unique role and increasing importance of informatics on aerospace. It fills a gap in current publishing coverage from outer space vehicles to atmospheric vehicles by highlighting interdisciplinary science, technology and engineering. Potential topics include, but are not limited to: Trans-space vehicle systems design and integration Air vehicle systems Space vehicle systems Near-space vehicle systems Aerospace robotics and unmanned system Communication, navigation and surveillance Aerodynamics and aircraft design Dynamics and control Aerospace propulsion Avionics system Opto-electronic system Air traffic management Earth observation Deep space exploration Bionic micro-aircraft/spacecraft Intelligent sensing and Information fusion
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