Tensile and shear properties of star-shaped cellular lattice structure. Issue 24 (17th December 2021)

• Record Type: Journal Article
• Authors: Liu, Weidong; Li, Honglin; Zhang, Jiong; Gong, Xiaobo; Wang, Yongjian; Ge, Xinfeng
• Is Part Of: Mechanics of advanced materials and structures. Volume 28:Issue 24(2021)
• Page Start: 2605
• Page End: 2617
• Publication Date: 2021-12-17
• Subjects: Cellular structure -- Cosine beam -- Elastic constant -- Finite element homogenization -- Maximum strain ratio; Composite materials -- Mechanical properties -- Periodicals; Composite construction -- Periodicals; 620.118
• DOI: 10.1080/15376494.2020.1747669
• Languages: English
• ISSNs: 1537-6494

Abstract

Abstract: A novel star-shaped cellular structure with great elastic properties is proposed as candidate for multiple morphing applications. Theoretical derivations and finite element analysis are conducted to study the mechanics of the structure. Results show that the in-plane moduli of the structure can be extremely lower than those of the base material, while the maximum global strains reach, dozens of times, the limit elastic strain of the base material. The proposed structure also exhibits lighter weight, lower in-plane moduli and larger strain ratios than the existing semi-sinusoidal structure, which indicates lower actuation requirements and greater strain capabilities for morphing applications.