Topology optimization of energy storage flywheel

Jiang, Lu; Wu, Chengwei

doi:10.1007/s00158-016-1576-1

Cited by 20 publications

(9 citation statements)

References 23 publications

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“…Due to lower stress values, the latter was considered as having higher potential. Similar conclusions concerning the stress distribution and energy density were drawn by [6] and [9]. The here developed flywheel therefore enables to combine good properties concerning high and adjustable angular momentum, low stress and low mass.…”

Section: Discussionsupporting

confidence: 78%

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Tomares

et al. 2021

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In aerospace industry, saving mass on spacecrafts always remain in large demand to save launch costs or increase the available payload mass. A case study is carried out designing a first concept of an additive manufactured flywheel of a reaction wheel, as it is one of the heaviest parts of wheel systems. As an objective the mass is minimized, while obtaining an angular momentum suitable according to mission requirements and maintaining recent performances. As references the SeaSAT mission and a commercial reaction wheel are used. The work includes a preliminary dimension of the flywheels design space by MATLAB calculations, where in total 15 shapes are analyzed and compared. The most promising design space is afterwards analyzed via the finite-element tool ANSYS and is defined as the reference flywheel. The reference flywheel is used for topology optimizations (ANSYS Topology Optimization), where different boundary conditions are considered. The final designed flywheel obtains 16% higher energy density than the reference flywheel and withstands the mission loads. It can be concluded that it was possible to design a flywheel obtaining less mass while keeping the expected performance.

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Section: Discussionsupporting

confidence: 78%

“…[5] followed the same goal by using parametric geometry modeling and a shape optimization method to optimize the flywheel rotor geometry. Utilizing topology optimization based on the variable density method, [6] also pursued the same goal. [7] investigated different flywheel geometries and their energy storage capacity per unit mass.…”

Section: Introductionmentioning

confidence: 99%

Tomares

et al. 2021

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“…The HyperView software is used to view the TO results. In the last step of the iteration, the element density threshold is set as 0.3, 15,16 and the conceptual model of the multiobjective TO of the hydraulic valve block is shown in Figure 11. The mass of the hydraulic valve block model corresponds to 6.964 kg, which is 69.1% less than that of the original model.…”

Section: Multiobjective To Design Of the Hydraulic Valve Blockmentioning

confidence: 99%

Topology optimization design of hydraulic valve blocks for additive manufacturing

Xie

Dong

Zhou

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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The hydraulic valve block is a core component of an integrated hydraulic system. In practical usage, it exhibits problems such as material waste, long manufacturing cycle, significant energy loss, and leakage. Based on the aforementioned existing problems, this study presents the design of the hydraulic system valve block based on the valve block design principle. The internal valve channel of the hydraulic valve block is optimized for additive manufacturing technology to avoid auxiliary drilling, solve the problem of potential liquid leakage, and shorten the manufacturing cycle. Thus, it is more suitable for the production of customized complex hydraulic valve blocks. The multiobjective topology optimization method is applied to the lightweight design of the hydraulic valve block to save resources and decrease energy consumption. The results indicate that when compared with the original model, the minimum reduction rate of pressure loss in each oil circuit orifice after optimization of the hydraulic valve block corresponds to 32.02%, the maximum corresponds to 71.38%; the maximum stress of the final design corresponds to 542.9 MPa, which satisfies the material strength requirement; and the mass is decreased by 68.9%. Thus, the lightweight design of the hydraulic valve block is realized.

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“…The flywheel [1] system is a key actuator for spacecraft attitude control, which is widely used in the aerospace field. The normal operation of a flywheel system is very important for spacecraft.…”

Section: Introductionmentioning

confidence: 99%

A Model for Flywheel Fault Diagnosis Based on Fuzzy Fault Tree Analysis and Belief Rule Base

Cheng¹,

Liu²,

He³

et al. 2022

Machines

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In the fault diagnosis of the flywheel system, the input information of the system is uncertain. This uncertainty is mainly caused by the interference of environmental factors and the limited cognitive ability of experts. The BRB (belief rule base) shows a good ability for dealing with problems of information uncertainty and small sample data. However, the initialization of the BRB relies on expert knowledge, and it is difficult to obtain the accurate knowledge of flywheel faults when constructing BRB models. Therefore, this paper proposes a new BRB model, called the FFBRB (fuzzy fault tree analysis and belief rule base), which can effectively solve the problems existing in the BRB. The FFBRB uses the Bayesian network as a bridge, uses an FFTA (fuzzy fault tree analysis) mechanism to build the BRB’s expert knowledge, uses ER (evidential reasoning) as its reasoning tool, and uses P-CMA-ES (projection covariance matrix adaptation evolutionary strategies) as its optimization model algorithm. The feasibility and superiority of the proposed method are verified by an example of a flywheel friction torque fault tree.

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Topology optimization of energy storage flywheel

Cited by 20 publications

References 23 publications

Tomares

Tomares

Topology optimization design of hydraulic valve blocks for additive manufacturing

A Model for Flywheel Fault Diagnosis Based on Fuzzy Fault Tree Analysis and Belief Rule Base

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