Failure mode analysis of stiffness-guided lattice structures under quasi-static and dynamic compressions

Fang, Zehui; Ding, Yu; Jiang, Yuting; Zheng, Yuxuan; Wang, Zhanjiang; Zhou, Fenghua

doi:10.1016/j.compstruct.2021.114414

Cited by 10 publications

(3 citation statements)

References 44 publications

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“…Next, we compare the specific energy absorption (SEA) measured from the quasi-static experiments between lattices designed in this work and reported in the previous studies, − all with PA 12 or its composite as the constituent materials. The Ashby map of SEA-relative density is shown in Figure c.…”

Section: Resultsmentioning

confidence: 99%

“…Mechanical properties of the proposed internally hierarchical multi-phase lattices, (a) multi-phase samples created by the permutations and combinations of cells and architecture types (SC–BCC–Octet–B–S as an example), (b) three triphase lattice samples deformed at ∼0.2 compression strain obtained from quasi-static experiments and FE simulations, (c) the SEA-relative density Ashby plot of experimentally tested lattices made of PA 12 or its composite in this work and from the literature, − and (d) classification chart spanned by the normalized specific energy absorption (∼0.6 fixed strain) and specific elastic modulus.…”

Section: Methodsmentioning

confidence: 99%

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Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

Bian

Wang

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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In metal metallurgy, precipitation strengthening is widely used to increase material strength by utilizing the impediment effect of the second-phase particles on dislocation movements. Inspired by this mechanism, in this paper, novel multiphase heterogeneous lattice materials are developed with enhanced mechanical properties utilizing a similar hindering effect of second-phase lattice cells on the shear band propagation. For this purpose, biphase and triphase lattice samples are fabricated using high-speed multi jet fusion (MJF) and digital light processing (DLP) additive manufacturing techniques, and a parametric study is carried out to investigate their mechanical properties. Different from the conventional random distribution, the second-phase and third-phase cells in this work are continuously distributed along the regular pattern of a larger-scale lattice to form internal hierarchical lattice structures. The results show that the triphase lattices possess balanced mechanical properties. Interestingly, this indicates that introducing a relatively weak phase also has the potential to improve the stiffness and plateau stress, which is distinct from the common mixed rule. This work is aimed at providing new references for the heterogeneous lattice design with outstanding mechanical properties through material microstructure inspiration.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

Bian

Wang

Yang

et al. 2023

ACS Appl. Mater. Interfaces

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show abstract

“…The same phenomenological model can be applied to any lattice that exhibits crushing-like failure behavior. [21,[31][32][33] For example, the compressive stress-strain curves of two additional types of lattice structures with similar failure behavior (obtained in the literature) were also modeled for further validation. The two types are 1) the typical body-centered-cubic (BCC) investigated by Jin et al [34] and 2) the square-cell (SC) lattice studied by Wang et al [35] The BCC structure was fabricated by selective laser melting (SLM) using Ti 6 Al 4 V powder with the unit cell dimensions being 5 Â 5 Â 5 mm, strut diameter of 0.8 mm, and four layers (four unit cells in the three directions).…”

Section: Relative Modulusmentioning

confidence: 99%

A New Phenomenological Model for the Crushing Failure Mechanism Lattice Structures

Alomar

Concli

2023

Adv Eng Mater

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A new phenomenological model for lattice structures that exhibit crushing‐like failure mechanisms is presented. The model estimates the compressive stress–strain curves of such lattices based on their relative density. The model is derived from the underdamped oscillator's general equation and the rheological model's properties. The model applicability is tested on five circular cell lattice structures having various relative densities, as well as a body‐centered‐cubic and a square cell lattice, for further validation. The model accurately captures the curves’ profile qualitatively and quantitatively compared with the experimental data. A relationship between each parameter and the relative density is established to extend the model's functionality as fourth‐order polynomial equations. Additionally, the energy absorption values between the measured data and the model up to the crushing of the first layer are in relatively good agreement ranging between 2.68% and 25.3%, proving the model's effectiveness. Overall, the new phenomenological model can estimate essential features of the lattice structures based solely on the relative density while reducing the time and the cost needed during the design phase.

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Proposing novel body-centered cubic lattice core sandwich panels as satellite structure

Kamareh,

Pang,

Cao

et al. 2024

Advances in Space Research

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Failure mode analysis of stiffness-guided lattice structures under quasi-static and dynamic compressions

Cited by 10 publications

References 44 publications

Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

Mechanical Properties of Internally Hierarchical Multiphase Lattices Inspired by Precipitation Strengthening Mechanisms

A New Phenomenological Model for the Crushing Failure Mechanism Lattice Structures

Proposing novel body-centered cubic lattice core sandwich panels as satellite structure

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