Bending behavior of graded corrugated truss core composite sandwich beams

Xu, Genqi; Yang, Fan; Zeng, Tao; Cheng, Su; Wang, Zhihai

doi:10.1016/j.compstruct.2015.11.057

Cited by 97 publications

(46 citation statements)

References 19 publications

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“…Specifically, hollow metallic microlattice materials based on advanced microfabrication techniques exhibited promising potential for impact protection [10][11][12][13][14][15][16][17][18]. Additionally, lattice composites, which are hybrids of lattice structures and fiber composites, can yield superior specific properties and populate vacant spaces in low-density regions of materials property charts [19][20][21][22][23][24]. Recent efforts have focused on fabrication techniques for these lattice composites, including interlocking [25], weaving [26], and hot press molding [27,28], although low-cost and large-volume approaches are still required to bring such structures into use.…”

Section: Introductionmentioning

confidence: 99%

Honeytubes: Hollow lattice truss reinforced honeycombs for crushing protection

Yin

Liu

et al. 2017

Composite Structures

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a b s t r a c tLattice truss reinforced honeycombs (LTRHs), termed honeytubes, were developed based on a hybrid design of micro-lattice truss and square honeycomb topologies. Carbon fiber reinforced composite and polymer LTRHs were fabricated using different manufacturing approaches. Out-of-plane compression tests were performed on the LTRHs, and the properties were compared with the conventional square honeycombs. The stiffness and strength values of composite LTRHs didn't surpass those of composite square honeycombs due to the manually induced defects. On the other hand, polymeric LTRHs with perfect geometries were stiffer and stronger than the corresponding polymeric square honeycombs. A parametric study of the buckling resistance was carried out via finite element analysis, and the results indicated that hollow lattice stiffens honeycombs and increases the resistance to buckling, while the specific properties of honeytubes depend on their geometrical parameters. Moreover, the crush force efficiency and specific energy absorption were greater than those of square honeycombs and hollow lattice. This work demonstrates that hybrid designs that capitalize on micro-topologies can populate vacant regions in mechanical property charts, and provide increased energy absorption as crushing protection structures.

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Section: Introductionmentioning

confidence: 99%

Honeytubes: Hollow lattice truss reinforced honeycombs for crushing protection

Yin

Liu

et al. 2017

Composite Structures

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“…A method for fabricating carbon fiber/epoxy composite sandwich panels with corrugated truss cores has been developed in our previous paper [32]. In this work, the auto-cutting and compression molding method has been used to form the prototype sandwich panels.…”

Section: Fabricationmentioning

confidence: 99%

Mechanical and oxidation properties of C/SiC corrugated lattice core composite sandwich panels

Yang

Cheng

Zeng

et al. 2016

Composite Structures

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“…In 1972, Bever and Duwez and Shen began research on gradient materials with gradual micro‐structure and discussed the prospects of this material in engineering applications. In order to improve the mechanical properties of the sandwich structure, Researchers introduced the concept of gradients into the sandwich structure . Another inspiring work was carried out by Yong, in which his group studied the out‐of‐plane dynamics characteristics and energy absorption properties of graded honeycomb structures, and they came to a conclusion that the SEA of graded honeycomb structures was 70% higher than that of traditional structures.…”

Section: Introductionmentioning

confidence: 99%

Research on In‐plane Quasi‐Static Mechanical Properties of Gradient Tetra‐Chiral Hyper‐Structures

Zhu

et al. 2019

Adv Eng Mater

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Chiral hyper-structure is a family of lightweight structure with negative Poisson's ratio, which leads benefit in mechanical properties and designability. In order to further improve some mechanical properties of chiral hyperstructures, the concept of gradient is introduced into the structure. Five groups of gradient tetra-chiral hyper-structure with different gradient factors are fabricated based on waterjet cutting technology, and the in-plane quasistatic lateral compression tests are carried out. Finite element models are developed for the in-plane linear elastic mechanical properties and plastic deformation modes under lateral compression condition. Theoretical prediction models of elastic modulus in gradient direction and Poisson's ratio of the gradient tetra-chiral hyper-structure is derived based on geometric assumptions and inhomogeneous deformation mode which are verified by experiments and finite element analysis. Simultaneously, the effects of gradient factors on the deformation characteristics and mechanical behaviors of the tetra-chiral hyper-structure are discussed and analyzed.

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Bending behavior of graded corrugated truss core composite sandwich beams

Cited by 97 publications

References 19 publications

Honeytubes: Hollow lattice truss reinforced honeycombs for crushing protection

Honeytubes: Hollow lattice truss reinforced honeycombs for crushing protection

Mechanical and oxidation properties of C/SiC corrugated lattice core composite sandwich panels

Research on In‐plane Quasi‐Static Mechanical Properties of Gradient Tetra‐Chiral Hyper‐Structures

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