摘要
Foldcores are considered as a kind of lightweight sandwich structures that have the potential to replace honeycomb core materials,especially in the field of aerospace manufacturing.Although foldcores based on Miura-ori and its derivative configurations have been extensively studied,such foldcores are relatively weak at the junction between the core material and the skin.The generalized Resch-based foldcores that can solve this defect are researched in this paper.We first compared the static mechanical properties of the triangular,quadrilateral,and hexagonal generalized Resch patterns during compression.The mechanical properties were analyzed using a fast tool called MERLIN and compared with the finite element method’s results.The results show that among the three types of configurations with the same height,the triangular generalized Resch element has greater stiffness and energy barrier to transform.As the number of sides of the basic polygon increases,the stiffness and energy barrier become smaller.
基金
The financial support from the Shanghai Aerospace Science and Technology Innovation Fund(SAST)is gratefully acknowledged.
