A simple and versatile topology optimization formulation for flexure synthesis

Koppen, Stijn; Langelaar, Matthijs; Keulen, Fred van

doi:10.1016/j.mechmachtheory.2022.104743

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…4) Versatility and adaptability: Optimization methods can be adapted to a wide range of optimization problems and objective functions. They are versatile tools that can handle various types of constraints and optimization objectives, making them suitable for diverse applications [46].…”

Section: Detailed Explanations Of the Advantages And Disadvantages Of...mentioning

confidence: 99%

Objective Model Selection in Physics: Exploring the Finite Information Quantity Approach

Menin

2024

JAMP

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Traditional methods for selecting models in experimental data analysis are susceptible to researcher bias, hindering exploration of alternative explanations and potentially leading to overfitting. The Finite Information Quantity (FIQ) approach offers a novel solution by acknowledging the inherent limitations in information processing capacity of physical systems. This framework facilitates the development of objective criteria for model selection (comparative uncertainty) and paves the way for a more comprehensive understanding of phenomena through exploring diverse explanations. This work presents a detailed comparison of the FIQ approach with ten established model selection methods, highlighting the advantages and limitations of each. We demonstrate the potential of FIQ to enhance the objectivity and robustness of scientific inquiry through three practical examples: selecting appropriate models for measuring fundamental constants, sound velocity, and underwater electrical discharges. Further research is warranted to explore the full applicability of FIQ across various scientific disciplines.

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Section: Detailed Explanations Of the Advantages And Disadvantages Of...mentioning

confidence: 99%

Objective Model Selection in Physics: Exploring the Finite Information Quantity Approach

Menin

2024

JAMP

View full text Add to dashboard Cite

show abstract

“…This PDF file includes: Supplementary Methods Figs. S1 to S18 tables S1 to S12 References (49)(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63) Other Supplementary Material for this manuscript includes the following: Movies S1 to S12 analysis simulation of the spine flexion. We thank Y.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Lateral flexion of a compliant spine improves motor performance in a bioinspired mouse robot

Bing,

Rohregger,

Walter

et al. 2023

Sci. Robot.

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A flexible spine is critical to the motion capability of most animals and plays a pivotal role in their agility. Although state-of-the-art legged robots have already achieved very dynamic and agile movement solely relying on their legs, they still exhibit the type of stiff movement that compromises movement efficiency. The integration of a flexible spine thus appears to be a promising approach to improve their agility, especially for small and underactuated quadruped robots that are underpowered because of size limitations. Here, we show that the lateral flexion of a compliant spine can promote both walking speed and maneuver agility for a neurorobotic mouse (NeRmo). We present NeRmo as a biomimetic robotic mouse that mimics the morphology of biological mice and their muscle-tendon actuation system. First, by leveraging the lateral flexion of the compliant spine, NeRmo can greatly increase its static stability in an initially unstable configuration by adjusting its posture. Second, the lateral flexion of the spine can also effectively extend the stride length of a gait and therefore improve the walking speeds of NeRmo. Finally, NeRmo shows agile maneuvers that require both a small turning radius and fast walking speed with the help of the spine. These results advance our understanding of spine-based quadruped locomotion skills and highlight promising design concepts to develop more agile legged robots.

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“…In this section the impact of material and design method on the performance of compliant gripper will be presented. Two design methods are demonstrated: topology optimisation utilizing a simple and versatile formulation from Koppen et al [18] implemented in commercial software HyperWorks OptiStruct and analytical method utilizing the instant canter approach [19]. The grippers presented here are displacement driven; input displacement pushing on the input port results in the jaws of gripper closing.…”

Section: Application Examplesmentioning

confidence: 99%

“…This lack of stiffness (as compared to PLA design) results from the application of TPC with the giver geometry (mainly width) of flexure. Topology optimisation of the next grippers was performed in commercial software HyperWorks utilizing the displacement driven 'simple and versatile topology optimisation formulation for flexure syntheses' developed by Koppen et al [18]. This formulation was adapted to use for the gripper design, the representative selected iterations of optimisation are presented in Figure 5.…”

Section: Application Examplesmentioning

confidence: 99%

Compliant mechanisms for dust mitigation in Lunar hardware development: technology and material considerations

Budzyń

Zare‐Behtash

Cowley

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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During the Apollo missions, astronauts observed negative impact of Lunar dust on the surface hardware. The characteristics of Lunar environment and the regolith properties accelerate the contamination and promote the abrasion and clogging of different components in the equipment. To protect the hardware from damages in the future Lunar missions, several mitigation technologies must be adapted. In this work, we propose to consider application of solutions that are naturally dust resilient. Such solutions, called implicit dust mitigation technologies, include usage of compliant mechanisms. Compliant mechanisms use elastic deformation to achieve motion and can replace rigid-body mechanisms that suffer increased friction and jamming due to dust accumulation in the inter-element gaps. Material selection for compliant mechanisms needs to be considered very early in the design process, and as demonstrated in our work, it is crucial to the final mechanism performance.

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A simple and versatile topology optimization formulation for flexure synthesis

Cited by 12 publications

References 40 publications

Objective Model Selection in Physics: Exploring the Finite Information Quantity Approach

Objective Model Selection in Physics: Exploring the Finite Information Quantity Approach

Lateral flexion of a compliant spine improves motor performance in a bioinspired mouse robot

Compliant mechanisms for dust mitigation in Lunar hardware development: technology and material considerations

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