Bio-inspired lattice structure optimisation with strain trajectory aligned trusses
نویسندگان
چکیده
Lattice structures have great potential for lightweight additively manufactured parts. This paper presents a bio-inspired functionally graded lattice structure optimisation approach compliance minimisation of statically loaded structures. Topology determines the optimal relative density distribution within design space and associated strain fields. A is then generated this space, comprised trusses aligned with principal trajectories. The rectangular cross-section, resulting in three size variable per node during final sizing step. minimum feature implemented so that designs are suited to particular additive manufacturing process print resolution. presented further demonstrated efficiently solve problems multiple load cases produce topologies mimic those found bone. optimised examples on average 12% less stiff comparison conventional SIMP topology approach. However, they well multifunctional applications such as heat transfer where surface area increased by an 94%. also shown be able eliminate support requirements.
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ژورنال
عنوان ژورنال: Materials & Design
سال: 2022
ISSN: ['1873-4197', '0264-1275']
DOI: https://doi.org/10.1016/j.matdes.2021.110320