Abstract
Lattice structure design widely applicable for 3D printed components. This research investigated the lattice structure with different shape and relative density using Finite Element Analysis (FEA) simulation. The material used for the lattice structure was the recycled polystyrene made from post-used Styrofoam. The research assessed the mechanical behaviour of lattice structure with either triangular prism and square prism with FEA simulation and numerical mathematical modelling, such as stiffness to-mass ratio, maximum von Misses stress and effective Young’s modulus. The finding FEA shows a good agreement with result from numerical mathematic modelling. The FEA results show lattice structure with triangular prism exhibited lowest value of maximum von Misses stress with maximum stiffness-to-mass value compared to lattice structure square prism. The finding from this work provided an early prediction on mechanical properties of lattice structure fabricated from recycled polystyrene.
Highlights
In this modern age, additive manufacturing (AM) is an advanced manufacturing method used in developing prototypes, parts of end-use, and tools for production line
AM is widely adopted by many industries such as aerospace, automotive and medical industries, due to its many benefit, such as shorter product development cycles, able to create component with complex geometry, and reduced fabrication cost and lead time [1,2] Component with cellular pattern usually fabricated using AM process due to its unique capacities in fabricating part with complex geometry which cannot made by traditional manufacturing process [3]
The Fuse Deposition Modelling (FDM) technology is one of the AM process that widely used because low cost, reliable and easy handle
Summary
Additive manufacturing (AM) is an advanced manufacturing method used in developing prototypes, parts of end-use, and tools for production line. AM is widely adopted by many industries such as aerospace, automotive and medical industries, due to its many benefit, such as shorter product development cycles, able to create component with complex geometry, and reduced fabrication cost and lead time [1,2] Component with cellular pattern usually fabricated using AM process due to its unique capacities in fabricating part with complex geometry which cannot made by traditional manufacturing process [3]. The materials used for FDM usually are thermoplastic materials, such as polylactic acid, acrylic butadiene styrene (ABS) and recycled plastic [4,5]. The study related to cellular pattern made from thermoplastic material using FDM is relatively rare, especially for recycled plastic materials
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