Anisotropic yielding model of lattice material and influencing factors

Abstract

Experiments and numerical simulations were used to study and analyze the anisotropy of lattice materials, and the elastic-plastic properties of lattice materials were obtained. The equivalent continuum hypothesis was used to approximate the lattice material as a homogeneous continuous orthotropic material. The relevant equivalent yield parameters and plastic yield surfaces of the lattice materials were calculated using the Hill yield criterion. Comparisons of numerical simulations and experimental data show that they match very well. The effect of strut radius on anisotropic yield property and yield surface of lattice material was investigated.

Keywords:

• 3D printing
• lattice structure
• plasticity
• yield surface
• finite element analysis

Acknowledgments

The authors gratefully acknowledge the financial supports from National Defense Science and Technology Key Laboratory Equipment Development.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data of this study are available through direct correspondence with the corresponding author.

Additional information

Funding

The authors gratefully acknowledge the financial supports from National Defense Science and Technology Key Laboratory Equipment Development Foundation (Grant No:6142704200405).