Mechanical behaviour of additively manufactured elastomeric pre-buckled honeycombs under quasi-static and impact loading

Selective laser sintering has been used to manufacture different structural variations of a pre-buckled circular honeycomb. The mechanical behaviour these structures examined under both quasi-static and dynamic impact loading. Pre-buckled honeycombs with aspect ratios e = 0.8 0.6 were compared traditional, straight-walled It found that the honeycomb can be tailored yield responses. Principally, decreasing ratio reduced stress at yield, as well total energy absorbed until densification, however, this alleviated characteristic stress-softening response traditional static conditions. When subjected multiple cycles loading, stabilised was observed. numerical closely agreed experimental results. A simplified, periodic boundary condition model also results whilst alleviating computational run time by nominally 75%. full factorial parameter design sweep identified broad range behaviour. This represents valuable tool identify optimal configurations for future mitigating applications.