Yield surfaces and micro-failure mechanism of block lattice truss materials

H. L. Fan; D. N. Fang; F. N. Jing

doi:10.1016/j.matdes.2008.04.013

Yield surfaces and micro-failure mechanism of block lattice truss materials

H. L. Fan^*, D. N. Fang, F. N. Jing

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

The stiffness and the strength of block lattice truss materials were derived, as well as polyhedrical yield surfaces. Tension yield, compression yield and compression buckling of struts are the three main micro-failure mechanisms of the lattice materials. It is shown that when the relative density of the lattice is smaller than a critical value micro compression buckling of struts will dominate the macro failure mode of the material under macro shearing loading or even macro tensile loading. The lattice truss materials may be optimal designed according to their stacking mode of struts and the critical relative density.

Original language	English
Pages (from-to)	2038-2042
Number of pages	5
Journal	Materials and Design
Volume	29
Issue number	10
DOIs	https://doi.org/10.1016/j.matdes.2008.04.013
Publication status	Published - Dec 2008
Externally published	Yes

Keywords

F. Plastic behavior
H. Failure analysis
I. Buckling

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10.1016/j.matdes.2008.04.013

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AU - Fan, H. L.

AU - Fang, D. N.

AU - Jing, F. N.

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N2 - The stiffness and the strength of block lattice truss materials were derived, as well as polyhedrical yield surfaces. Tension yield, compression yield and compression buckling of struts are the three main micro-failure mechanisms of the lattice materials. It is shown that when the relative density of the lattice is smaller than a critical value micro compression buckling of struts will dominate the macro failure mode of the material under macro shearing loading or even macro tensile loading. The lattice truss materials may be optimal designed according to their stacking mode of struts and the critical relative density.

AB - The stiffness and the strength of block lattice truss materials were derived, as well as polyhedrical yield surfaces. Tension yield, compression yield and compression buckling of struts are the three main micro-failure mechanisms of the lattice materials. It is shown that when the relative density of the lattice is smaller than a critical value micro compression buckling of struts will dominate the macro failure mode of the material under macro shearing loading or even macro tensile loading. The lattice truss materials may be optimal designed according to their stacking mode of struts and the critical relative density.

KW - F. Plastic behavior

KW - H. Failure analysis

KW - I. Buckling

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DO - 10.1016/j.matdes.2008.04.013

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SP - 2038

EP - 2042

JO - Materials and Design

JF - Materials and Design

IS - 10

ER -

Yield surfaces and micro-failure mechanism of block lattice truss materials

Abstract

Keywords

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