High-fidelity simulation training for nasal bridle placement with a 3D printed model

Huang, Yao Zhi; Nascene, David; Spilseth, Benjamin; Chuy, Jeffrey A.

doi:10.1016/j.stlm.2023.100108

Cited by 1 publication

(2 citation statements)

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“…The introduction of triangulation effectively distributes forces and prevents the structure from easily deforming or collapsing. [61,[67][68][69][70] Moreover, the diagonal beams restrict the overall movement of the structure, resulting in reduced deflection or deformation, contributing to increased stiffness. These reinforced beams can also help transmit the loads to multiple points of support which prevents concentrated stress points.…”

Section: Discussionmentioning

confidence: 99%

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Exploring Tunable Torsional Mechanical Properties of 3D‐Printed Tubular Metamaterials

Zhang,

Liu,

Usta

et al. 2024

Adv Eng Mater

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Additive manufacturing has proven to be a reliable and quick method for creating devices and tools, particularly during disruptions to supply chains. One example is 3D printed nasal swabs with tubular structures that require robust mechanical strength while maintaining adequate flexibility. However, there is a lack of detailed understanding on the mechanical response of tubular structures under torsion loading. The goal of this work is to understand the torsional behavior of a new group of 3D printed tubular metamaterials. We used the idea of mechanical metamaterials and started with a simple rectangular lattice. Two main design methods were used: reinforced lattices and compliant lattices. First, we added diagonal reinforced beams to enhance the torsional rigidity, inspired by the lattice structure of sea sponges. Furthermore, we added pre‐buckling to the straight beam, creating a flexible structure that increases the maximum torsional resistance. Our experiments demonstrated the sponge‐inspired design exhibits enhanced stiffness approximately 21 times that of baseline tubular designs. Moreover, the strength and toughness of the sponge‐inspired design are approximately 2.5 and 3 times higher, respectively. By curving the straight beam, we created a set of compliant tubulars that improve flexibility. The torsional angle is increased by at least 2.7 times, while the torsional toughness can reach up to 17 times. Numerical simulations have demonstrated that introducing triangulation into the diagonal reinforced lattice can enhance its stiffness and stability. This is achieved by effectively distributing stress, thereby contributing to structural rigidity. By curving a straight beam and constructing a compliant lattice, stresses are more evenly distributed over a larger area, allowing for greater deformation of the beam without causing failure. Using these two design strategies helps in creating tubular metamaterials with varied applications. Industries requiring high torsional resistance, such as aerospace parts and the automotive industry, can particularly benefit from these materials. They also offer advantages for sectors that need enhanced flexibility, like wearable electronics and soft robotics.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

“…This approach resulted in a close similarity to the structure of E. aspergillum , whose skeletal system is reported to align closely with its optimal design. [ 61 ]…”

Section: Methodsmentioning

confidence: 99%