Virtual prototyping of 3D printed cranial orthoses by finite element analysis

Maršálek, Pavel; Grygar, Ales; Karásek, Tomáš; Brzobohatý, Tomáš

doi:10.1063/1.5114332

Cited by 4 publications

(6 citation statements)

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“…The experimental verification of the shell stiffness was inspired by the laboratory testing of cranial orthoses published by Marsalek et al [4]. The authors of the article used a plunger to gradually deform the structure and analyze the displacement.…”

Section: Description Of Testing Methodologymentioning

confidence: 99%

“…Suitable methods are mentioned in the Introduction. For the purposes of this study, Nylon (Polyamide 12, PA12), was chosen as an appropriate material suitable for 3D printing due to its material properties described in the article by Marsalek et al [4]. PA12 is a thermoplastic material offering good chemical and wear resistance and high toughness.…”

Section: Materials Selectionmentioning

confidence: 99%

“…Patterns are common also in nature-for instance, an almost perfect pattern of hexagonal cells can be found in honeycombs [1,2]. Recent studies showed the potential of patterns in designing structures as an emerging solution for the reduction of the product weight, consumption of energy during production, and of manufacturing time [3,4]. For example, a lattice structure is often recommended to maintain the stiffness of structures while reducing weight (and, thus, material consumption) [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…This approach allows the stiffness and other mechanical properties of the part to be controlled by the shape of the empty areas (holes) such as the size of the gaps, structure thickness, curvature, etc., rather than by the choice of material. Typical applications of FS include the flexible parts of orthoses or prostheses that are in direct contact with the patient's body [8], cranial remoulding helmets padding [4], new types of adaptive cushions and others [9]. In this paper, authors focused mainly on external biomedical application (for example, already mention helmet padding).…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Testing of Flexible Structures with Selected Planar Patterns Used in Biomedical Applications

et al. 2020

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Flexible structures (FS) are thin shells with a pattern of holes. The stiffness of the structure in the normal direction is reduced by the shape of gaps rather than by the choice of the material based on mechanical properties such as Young’s modulus. This paper presents virtual prototyping of 3D printed flexible structures with selected planar patterns using laboratory testing and computer modeling. The objective of this work is to develop a non-linear computational model evaluating the structure’s stiffness and its experimental verification; in addition, we aimed to identify the best of the proposed patterns with respect to its stiffness: load-bearing capacity ratio. Following validation, the validated computational model is used for a parametric study of selected patterns. Nylon—Polyamide 12—was chosen for the purposes of this study as an appropriate flexible material suitable for 3D printing. At the end of the work, a computational model of the selected structure with modeling of load-bearing capacity is presented. The obtained results can be used in the design of external biomedical applications such as orthoses, prostheses, cranial remoulding helmets padding, or a new type of adaptive cushions. This paper is an extension of the conference paper: “Modeling and Testing of 3D Printed Flexible Structures with Three-pointed Star Pattern Used in Biomedical Applications” by authors Repa et al.

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Section: Description Of Testing Methodologymentioning

confidence: 99%

Section: Materials Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modeling and Testing of Flexible Structures with Selected Planar Patterns Used in Biomedical Applications

et al. 2020

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“…However, the reduction in the weight of the upright could not be, in this case, the only goal, because it is also necessary to maintain sufficient stiffness; therefore, a compromise has to be found between weight, strength, and stiffness [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive View on Racing Car Upright Design and Manufacturing

et al. 2020

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This paper deals with the design of an upright using a topological optimization. This type of optimization is a relatively young and rapidly evolving area of computational mechanics that seeks to make multiple material savings that cannot be achieved by conventional methods. The optimized upright was utilized in a fully functional prototype of the student formula within the Formula Student competition. The main objective of the optimization was to meet the requirements of the physical properties, weight, stiffness, and strength of the upright. The initial model of the upright was iteratively optimized using topological optimization and a finite element static analysis to obtain the final model. Using the finite element analysis, its behavior in operation within individual load cases was predicted. Symmetry was used to mirror the finished model to obtain the opposite upright of the other side of the car. Finally, the topologically optimized upright was compared with an upright made by conventional methods.

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Optimizing 3D printed ankle-foot orthoses for patients with stroke: Importance of effective elastic modulus and finite element simulation

Yeh,

Lin,

et al. 2024

Heliyon

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Virtual prototyping of 3D printed cranial orthoses by finite element analysis

Cited by 4 publications

References 0 publications

Modeling and Testing of Flexible Structures with Selected Planar Patterns Used in Biomedical Applications

Modeling and Testing of Flexible Structures with Selected Planar Patterns Used in Biomedical Applications

Comprehensive View on Racing Car Upright Design and Manufacturing

Optimizing 3D printed ankle-foot orthoses for patients with stroke: Importance of effective elastic modulus and finite element simulation

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