About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Predictions of the Elastic-plastic Compressive Response of Functionally Graded Polymeric Composite Lattices Manufactured by 3D Printing |
Author(s) |
Janos Plocher, Vito Tagarielli, Ajit Panesar |
On-Site Speaker (Planned) |
Ajit Panesar |
Abstract Scope |
We use 3D printing to manufacture lattices with uniform and graded relative density, made from a composite parent material comprising a nylon matrix reinforced by short carbon fibres. The elastic-plastic compressive response of these solids is measured up to their densification regime. Data from experiments on the lattices with uniform relative density is used to deduce the dependence of their homogenised constitutive response on their relative density, in the range 0.2-0.8. This data is used to calibrate Finite Element (FE) simulations of the compressive response of Functionally Graded Lattices (FGLs), which are found in good agreement with the corresponding measurements. This exercise is repeated for two lattice topologies (body-centred cubic and Schwarz-P) and provides a dataset that can be used in topology optimisation to maximise the performance of 3D printed FGLs components in terms of stiffness, strength or energy absorption. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |