This work compares the mechanical performance of agglomerated cork against synthetic materials typically used as impact energy absorbers. Particularly, the study will focus on the expanded polystyrene
(EPS) and expanded polypropylene (EPP).
Firstly, quasi-static compression tests are performed in order to assess the energy storage capacity and
to characterize the stress–stra in behavior cellular materials under study. Secondly, guided drop tests are
performed to study the response of these materials when subjected to multiple dynamic loading (two
impacts). Thirdly, finite element analysis (FEA) is carried out in order to simulate the compressive behavior of the studied materials under dynamic loading.
Results show that agglomerated cork is an excellent alternative to the synthetic materials. Not only for
being a natural and sustainable material but also for withstanding considerable impact energie s. In addition, its capacity to keep some of its initial properties after loading (regarding mechanical properties and
dimensions) makes this material highly desirable for multiple-impact applications.