Custom Shoe Sole Design and Modeling Toward 3D Printing

Abstract

This study introduces a design procedure for improving an individual’s footwear comfort with body weight index and activity requirements by customized three-dimensional (3D)-printed shoe midsole lattice structure. This method guides the selection of customized 3D-printed fabrications incorporating both physical and geometrical properties that meet user demands. The analysis of the lattice effects on minimizing the stress on plantar pressure was performed by initially creating various shoe midsole lattice structures designed. An appropriate common 3D printable material was selected along with validating its viscoelastic properties using finite element analysis. The lattice structure designs were analyzed under various loading conditions to investigate the suitability of the method in fabricating a customized 3D-printed shoe midsole based on the individual’s specifications using a single material with minimum cost, time, and material use.

Photocurable and elastic polyurethane based on polyether glycol with adjustable hardness for 3D printing customized flatfoot orthosis

“…4k), respectively. Based on the principle of reaction force, the stress value generated on the surface of the insoles was equal to the plantar pressure; 61 thus, it is believed that under the same weight conditions, the PUA-3-1 composite resin will afford relatively low plantar pressure compared with the traditional EVA foam. Bottoming-out occurs if there is early or excessive deformation, in which case, the shock-absorbing effects are lost.…”

Modeling Orthotic Insole for Flatfoot using Finite Element Analysis and 3D Scanning

“…Ali Zolfagharian et al (2021) conducted FEA using ABAQUS to study the viscoelastic behavior of various suggested lattice structures of shoe midsoles used in different human activities. FEA helped in selecting the lattice structure with less stress with respect to person's activity.…”

Design of 3D printed pressure-reducing insoles based on changes in parameters of lattice structure

“…3 But due to individual differences in foot structure, pressure-reducing of mass-produced footwear often has certain limitations, and it is difficult to target to disperse pressure and reduce foot injuries. 4 Customized footwear can reduce plantar pressure to a great extent, 5 but it is mainly for people with serious conditions and generally has high cost and long production cycle. 6 3D printing technology in making pressure-reducing insoles can reduce the production costs while shortening the time.…”