Damping and cushioning characteristics of Polyjet 3D printed photopolymer with Kelvin model

Abstract

This study extends previous research on the measurement of a 3D printed photopolymer’s quasi-static cushion properties, to include cushion and damping properties due to impact loading. In order to develop analytical packaging models of 3D printed materials, it is essential to know how energy induced by shipping and handling is dissipated through damping. Compared to the cushion curve, investigating how damping influences packaging design is relatively unfamiliar to the packaging practitioner. This study uses experimentally derived hysteresis loops, from platen impact and quasi-static compression tests, to estimate specific damping capacities for 3D printed photopolymer. This study found that the “sticky” rubber like 3D printed photopolymers, based on a repeating pattern of Kelvin cells, were able to dissipate close to 100% of the input energy in platen impact tests and still return to their original dimensions after impact. In addition, this study shows that the specific damping capacity of the 3D printed structure increases significantly with strain rate.

Modelling the interphase of 3D printed photo-cured polymers

“…Three-dimensional (3D) printing is traditionally used to prototype new design concepts and to build layer-by-layer the desired component. It is commonly employed for the production of complex structures and to develop heterogeneous composites with tight control on the local microstructure and material composition [1][2][3]. Hence, in contrast with the more common subtractive techniques, which involve removing sections of material by cutting or machining it away, 3D printing consists in the addition of material layers to obtain the end-product.…”

3D Printing of Thermoplastic Elastomers: Role of the Chemical Composition and Printing Parameters in the Production of Parts with Controlled Energy Absorption and Damping Capacity

“…More recently, the use of thermoplastic elastomers (TPE) with FDM, which enables the fabrication of 3D printed parts with new properties, has also been investigated. Thermoplastic elastomers are of high interest due to their ability to stretch to moderate elongations and return to its near original shape, energy absorption capacity [ 10 , 11 , 12 , 13 ], energy efficiency [ 10 , 11 ], cushion factor [ 14 , 15 ] or damping capacity [ 14 ]. It is worth mentioning that thermoplastic elastomer parts can be also manufactured by Selective Laser Sintering (SLS) technology.…”

3D printed geometrically tessellated sheets with origami-inspired patterns

“…These designs include honeycomb structures, tensegrity-inspired materials, lattice structures, and kirigami and origami-inspired materials. 1–4 The designs can be created to target improving specific material properties such as strength-to-weight ratio, negative material indices (also known as metamaterials), material stiffness, and impact energy absorption. 5,6…”

“…These designs include honeycomb structures, tensegrity-inspired materials, lattice structures, and kirigami and origami-inspired materials. [1][2][3][4] The designs can be created to target improving specific material properties such as strength-to-weight ratio, negative material indices (also known as metamaterials), material stiffness, and impact energy absorption. 5,6 Materials for impact energy absorption are important for a wide range of applications including large-scale projects such as protecting the base and supporting structure of bridges from impacts due to collisions 7 or natural disasters.…”