| Citation: | YANG H，XIE Z H，YANG H B，et al. Influence of penetration damage on in-plane compression properties of titanium honeycomb sandwich cover structure[J]. Journal of Beijing University of Aeronautics and Astronautics，2023，49（2）：378-387 （in Chinese） doi: 10.13700/j.bh.1001-5965.2021.0249
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During the service period, penetration damage may occur in the titanium honeycomb sandwich cover structure which will affect the in-plane compression properties of the sandwich cover structure. The influence of penetration damage on the in-plane compression properties of titanium honeycomb sandwich cover structure was studied by a combination of experiments and finite element methods. The results show that the in-plane compression failure load of the titanium honeycomb sandwich cover structure with penetration damage is slightly higher than that of the titanium honeycomb sandwich cover structure without damage. Moreover, the in-plane compression failure load increases with the increase of the diameter of penetration damage. The greatest variation is 9.33%, the maximum agreement between the failure load and test results is good, and the failure mode predicted by the finite element model is compatible with the test data.The finite element method can be used for engineering prediction of the in-plane compression properties of titanium honeycomb sandwich cover structure.
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