复合材料层合板结构冲击损伤数值模拟的损伤力学模型

doi:10.7527/S1000-6893.2015.0345

Abstract

Abstract:

Based on continuum damage mechanics, a three-dimensional damage mechanics model was proposed to simulate low-velocity impact responses of composite laminated structures under the condition of dynamic. This model is capable to predict several possible in-plane failure modes (e.g., fibre tensile failure, fiber compressive failure, inter fiber tensile failure and inter fiber compressive failure) and interlaminar failure modes. Three-dimensional Puck failure criterion was used to conduct in-plane failure determination, and Aymerich failure criterion was used to conduct delamination failure determination. After damage initiation, linear-softening model was used to describe material properties' evolution process. In addition, the lamina's in-situ effect and structures' chain destruction were also taken into consideration. By using this model, a numerical example was finished. The final result shows that the predicted impact load, delamination shape and size have a relatively good agreement with Shi's experimental data. Therefore, the rationality and effectiveness of the developed numerical model for predicting low-velocity impact responses of composite laminated structures are shown.

Key words: composites, low-velocity impact, progressive damage evolution, Puck failure criterion, chain reaction

CLC Number:

V214.8

LIU Xiangmin, YAO Weixing, CHEN Fang. Damage mechanics model for simulating impact responses of composite laminated structures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(10): 3054-3063.

References

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Damage mechanics model for simulating impact responses of composite laminated structures

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