Theoretical analysis on carbon fiber reinforced aluminum laminate under off-center impact

• Published in: International journal of mechanical sciences 2023-06, Vol.248, p.108247, Article 108247
• Main Authors: Lu, Bingquan, Zhang, Junyuan, Zheng, Danfeng, Xie, Jian, Zhang, Le
• Format: Article
• Language: English
• Subjects: CARALL; Dynamic response; Off-center impact; Theoretical model
• ISSN: 0020-7403; 1879-2162
• DOI: 10.1016/j.ijmecsci.2023.108247

•Theoretical solution for predicting dynamic response of CARALL under off-center impact is developed.•Establishment and simplification method of yield criterion for hybrid plastic hinges is proposed.•Theoretical model reveals the energy absorption mechanism of CARALL under off-center impact. Carbon fiber reinforced aluminum laminate (CARALL) composed of multi-layer CFRP and aluminum has better toughness and impact resistance than composite laminates due to the existence of metal. This work investigates the energy absorption mechanism and creatively proposes a theoretical analysis model to predict the dynamic response of CARALL under off-center impact. Firstly, based on a simplified ideal rigid-plastic material model, a unified yield criterion and its simplified method for hybrid plastic hinges are proposed. Then, the analytical solution for maximum transverse displacement and impact force of CARALL under off-center impact is established. Finally, it is verified by the simulation and discussed in detail. The results show that the established theoretical method can predict the structural response under low-velocity impact. [Display omitted]