Deployment dynamics and topology optimization of a spinning inflatable structure

Sun, Jialiang; Jin, Dongping; Hu, Haiyan

doi:10.1007/s10409-022-22100-x

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…To circumvent the intermediary transition region and enhance the convergence of the binary solution, the relationship between density variables ρ i and material properties is elucidated using the SIMP method [30,35] in the following way:…”

Section: Topology Optimization Formulation 31 Density Methodsmentioning

confidence: 99%

“…This method can obtain an excellent topology optimization configuration but requires much computation. Sun et al [30] applied the density method coupled with the integration of the equivalent static loads (ESL) method to enhance the dynamic response topology of a rotating inflatable structure. Sun et al [31] presented an approach for the representation and optimization of the topology of thinwalled structures fitted with directional straighteners.…”

Section: Introductionmentioning

confidence: 99%

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Web Layout Design of Large Cavity Structures Based on Topology Optimization

Yang,

Sun,

Jin

2024

CMES

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Large cavity structures are widely employed in aerospace engineering, such as thin-walled cylinders, blades and wings. Enhancing performance of aerial vehicles while reducing manufacturing costs and fuel consumption has become a focal point for contemporary researchers. Therefore, this paper aims to investigate the topology optimization of large cavity structures as a means to enhance their performance, safety, and efficiency. By using the variable density method, lightweight design is achieved without compromising structural strength. The optimization model considers both concentrated and distributed loads, and utilizes techniques like sensitivity filtering and projection to obtain a robust optimized configuration. The mechanical properties are checked by comparing the stress distribution and displacement of the unoptimized and optimized structures under the same load. The results confirm that the optimized structures exhibit improved mechanical properties, thus offering key insights for engineering lightweight, high-strength large cavity structures.

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Section: Topology Optimization Formulation 31 Density Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Web Layout Design of Large Cavity Structures Based on Topology Optimization

Yang,

Sun,

Jin

2024

CMES

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“…Liang et al [28] designed a new net projectile mechanical structure to capture the target and simulated the projection process to make references on the projectile strategy of the space net. Meanwhile, the deployment dynamics for the inflatable rods mainly include a nonlinear finite element model [29], a finite volume inflation model [30] and an energy model [31]. Contact and collision are important features for the space netted pocket system in capturing the target.…”

Section: Introductionmentioning

confidence: 99%

Dynamics Analysis of Space Netted Pocket System Capturing Non-Cooperative Target

Tang,

Deng,

Bai

et al. 2023

Applied Sciences

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With the increasing amount of space debris, it is necessary to develop space debris active cleaning technology. The space netted pocket system is a flexible mechanism system which can be used to capture a non-cooperative target flexibly due to the advantages of having a stable structure, strong adaptability and a large capture range. In this paper, the dynamics of the space netted pocket system capturing a non-cooperative target are investigated. The dynamics model of the space netted pocket system is established based on the absolute nodal coordinate formulation (ANCF). The mathematic model of the closing rope is modeled using an ANCF flexible cable dynamics model. Then, the contact collision force model is presented to describe the collision characteristics during the space netted pocket system capturing the target. Finally, the dynamic characteristics of the space netted pocket system capturing the non-cooperative target are analyzed and discussed for different capturing strategies. The simulation results indicate that the target is captured successfully and the target contacts and collides with the rope net in the capturing process, which is subjected to contact and collision forces.

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