Design Procedure of a Topologically Optimized Scooter Frame Part

Jančar, Lukáš; Pagáč, Marek; Měsíček, Jakub; Stefek, Petr

doi:10.3390/sym12050755

Cited by 13 publications

(11 citation statements)

References 14 publications

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“…Furthermore, their paper discusses the problem of supplementing the code with the analysis of several load-cases, inserting passive areas, using filtering, etc. Another example of topology optimization procedures has been published by Jancar et al [ 27 ].…”

Section: Methodsmentioning

confidence: 99%

Study of Optimal Cam Design of Dual-Axle Spring-Loaded Camming Device

et al. 2021

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The spring-loaded camming device (SLCD), also known as “friend”, is a simple mechanism used to ensure the safety of the climber through fall prevention. SLCD consists of two pairs of opposing cams rotating separately, with one (single-axle SLCD) or two (dual-axle SLCD) pins connecting the opposing cams, a stem, connected to the pins, providing the attachment of the climbing rope, springs, which simultaneously push cams to a fully expanded position, and an operating element controlling the cam position. The expansion of cams is thus adaptable to allow insertion or removal of the device into/from a rock crack. While the pins, stem, operating element, and springs can be considered optimal, the (especially internal) shape of the cam allows space for improvement, especially where the weight is concerned. This paper focuses on optimizing the internal shape of the dual-axle SLCD cam from the perspective of the weight/stiffness trade-off. For this purpose, two computational models are designed and multi-step topology optimization (TOP) are performed. From the computational models’ point of view, SLCD is considered symmetric and only one cam is optimized and smoothened using parametric curves. Finally, the load-bearing capacity of the new cam design is analyzed. This work is based on practical industry requirements, and the obtained results will be reflected in a new commercial design of SLCD.

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Section: Methodsmentioning

confidence: 99%

Study of Optimal Cam Design of Dual-Axle Spring-Loaded Camming Device

et al. 2021

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“…It should be noted that the topology optimization is done to cut off the weight from the part, while ensuring that the part is functional and with comparable stiffness in comparison to its original counterpart. Specifically, in our study, we saved 63% of weight (From Figure Topological optimization has become a powerful area of study since such algorithms can be applied to many design problems in different physical disciplines, such as solid mechanics, fluid dynamics, and thermal dynamics [18][19][20]. By using topological optimization methods and related algorithms, a designer can generate innovative design ideas, especially in engineering fields.…”

Section: Topology Optimizationmentioning

confidence: 99%

Prediction of Model Distortion by FEM in 3D Printing via the Selective Laser Melting of Stainless Steel AISI 316L

et al. 2021

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This paper deals with an experimental analysis of stress prediction and simulation prior to 3D printing via the selective laser melting (SLM) method and the subsequent separation of a printed sample from a base plate in two software programs, ANSYS Addictive Suite and MSC Simufact Additive. Practical verification of the simulation was performed on a 3Dprinted topologically optimized part made of AISI 316L stainless steel. This paper presents a typical workflow for working with metallic 3D printing technology and the state-of-the-art knowledge in the field of stress analysis and simulation of printed components. The paper emphasizes the role of simulation software for additive production and reflects on their weaknesses and strengths as well, with regard to their use not only in science and research but also in practice.

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“…The paper by Marsalek et al [10] demonstrated the capability of the SLS method for the production of flexible structures with complex geometries while using the PA12 (Polyamide 12) material. Other examples of printing complex geometries using TOP have been published by Jancar et al [11,12]. However, these papers use a different printing method, namely Selective laser melting (SLM)-a method that is similar to SLS, which, however, prints metal alloys and requires supports.…”

Section: Connecting Adaptermentioning

confidence: 99%

New Design Procedure of Transtibial ProsthesisBed Stump Using Topological Optimization Method

et al. 2020

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This paper presents a new design procedure for production of a transtibial prosthesis bed stump by three-dimensional (3D) printing with topological optimization. The suggested procedure combines the medical perspective with finite element analysis and facilitates regaining the symmetry in patients with transtibial prosthesis, which leads to life improvement. The particular focus of the study is the weight reduction of the lower part of the bed stump, while taking into account its stiffness and load-bearing capacity. The first part of the work deals with the analysis of the subject geometry of the bed stump, which is usually oversized in terms of the weight and stiffness that are necessary for the current application. In the second part, an analysis of walking biomechanics with a focus on the impact and rebound phases is presented. Based on the obtained information, a spatial model of the lower part of the bed stump is proposed in the third phase, in which the finite element method is described. In the fourth part, the topological optimization method is used for reducing the structure weight. In the last part, the results of the designed model are analyzed. Finally, the recommendations for the settings of the method are presented. The work is based on the practical industry requirements, and the obtained results will be reflected in the design of new types of transtibial prosthesis.

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Design Procedure of a Topologically Optimized Scooter Frame Part

Cited by 13 publications

References 14 publications

Study of Optimal Cam Design of Dual-Axle Spring-Loaded Camming Device

Study of Optimal Cam Design of Dual-Axle Spring-Loaded Camming Device

Prediction of Model Distortion by FEM in 3D Printing via the Selective Laser Melting of Stainless Steel AISI 316L

New Design Procedure of Transtibial ProsthesisBed Stump Using Topological Optimization Method

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