Optimal Design of Dielectric Flat Lens Based on Topology Optimization Concept

Topology optimization and shape optimization of structural optimization techniques are applied to transport skate the lightweight. Skate properties by varying the design variables and minimize the maximum stress and strain in the normal operation, while reducing the volume of the objective function of optimal design and Skate the static strength of the constraints that should not degrade compared to the performance of the initial model. The skates were used in this study consists of the main frame, sub frame, roll, pin main frame only structural analysis and optimal design was performed using the finite element method. Simplified initial model set design area and it compared to SM45C, AA7075, CFRP, GFRP was using the topology optimization. Strength does not degrade compared to the initial model, decreased volume while minimizing the stress and strain results, the optimum design was achieved efficient lightweight.

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Optimal Design of Structure with Specified Fundamental Natural Frequency Using Topology Optimization

Lecture Notes in Mechanical Engineering - Advances in Structural Vibration ◽

10.1007/978-981-15-5862-7_8 ◽

2020 ◽

pp. 85-93

Author(s):

Kandula Eswara Sai Kumar ◽

Sourav Rakshit

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Natural Frequency ◽

Fundamental Natural Frequency

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Optimal Design for Strength Improvement of Support Bracket for Sanding Device of Railway Vehicle Using Topology Optimization

Journal of the Korean Society for Precision Engineering ◽

10.7736/jkspe.019.114 ◽

2020 ◽

Vol 37 (4) ◽

pp. 263-270

Author(s):

Yonho Cho ◽

Woohyuck Yoon

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Railway Vehicle ◽

Strength Improvement

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Optimal Design of Semi-Trailer Frame Based on Topology Optimization

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.197.502 ◽

2012 ◽

Vol 197 ◽

pp. 502-507

Author(s):

Li Li Dai ◽

Jing Gang Wang ◽

Shuang Zhao ◽

Ya Qiong Deng ◽

Nan Jia

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Dynamic Analysis ◽

Dynamic Characteristics ◽

Frame Structure ◽

Topological Optimization ◽

Static Characteristics ◽

Manufacturing Efficiency ◽

Original Frame ◽

The Cost

40t semi-trailer frame is optimized by usage of topological optimization and static/dynamic analysis technology. After the optimization, The static characteristics of frame completely satisfy requirement of intensity and stiffness, and the quality is reduced by 10% compared with the original frame. The dynamic characteristics of the new frame have been improved greatly, which indicate that the optimized frame structure is more reasonable, and lay the foundation for reducing the cost and improving manufacturing efficiency.

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A Study on Function-Expansion-Based Topology Optimization without Gray Area for Optimal Design of Photonic Devices

IEICE Transactions on Electronics ◽

10.1587/transele.2019esp0005 ◽

2020 ◽

Vol E103.C (11) ◽

pp. 560-566

Author(s):

Masato TOMIYASU ◽

Keita MORIMOTO ◽

Akito IGUCHI ◽

Yasuhide TSUJI

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Photonic Devices ◽

Gray Area ◽

Function Expansion

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Optimal design of periodic structures using evolutionary topology optimization

Structural and Multidisciplinary Optimization ◽

10.1007/s00158-007-0196-1 ◽

2007 ◽

Vol 36 (6) ◽

pp. 597-606 ◽

Cited By ~ 63

Author(s):

X. Huang ◽

Y. M. Xie

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Periodic Structures

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Topology Optimization of the Hip Bone for Walking Using Multi-Load Approach

Volume 12: Mechanics of Solids, Structures, and Fluids ◽

10.1115/imece2020-24472 ◽

2020 ◽

Author(s):

Kandula Eswara Sai Kumar ◽

Sourav Rakshit

Keyword(s):

Topology Optimization ◽

Optimal Design ◽

Hip Joint ◽

Gait Cycle ◽

Procrustes Analysis ◽

Optimal Designs ◽

Shape Similarity ◽

Joint Force ◽

Walking Gait ◽

Case Based

Abstract In this work, we use structural topology optimization to design the hip bone with multi-load conditions of walking gait cycle. Previous research works on optimal bone design primarily aimed to design the micro-structure of the femur bone using a multi-load approach with global geometry fixed. To the best of authors’ knowledge, no optimal design research literature is available on the hip bone. This work uses the concept of multiload conditions, since it considers the effect of entire gait cycle while applying loading conditions. We consider three cases for the weights. Those are (i) equi-weight case, (ii) non-equi weight case based on the fraction of the phase in the gait cycle and (iii) non-equi weight case based on the ratio of magnitude of the hip joint force in respective phases to the total hip joint force of the entire walking gait cycle. The optimal designs are compared with natural hip bone by measuring shape similarity using Procrustes Analysis. Results show that the compliance is less for the optimal designs compared with natural hip bone. The shape similarity values for the three cases are found to be 64%, 78% and 73% respectively. Optimal design obtained from the non-equi weight case based on the duration of phase has highest shape similarity value due to creation of a hole similar to obturator foramen in lower portion of the hip bone. The maximum stress and maximum displacement values are lower in optimal designs compared with natural hip bone. From the shape similarity results, the optimal design from the non-equi weight based on duration of the phase may be more suitable for prosthesis applications.

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