An integrated approach to topology, sizing, and shape optimization

Zhou, Ming; Pagaldipti, N.; Thomas, Harold; Shyy, Y. K.

doi:10.1007/s00158-003-0351-2

Cited by 75 publications

(28 citation statements)

References 33 publications

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“…In conclusion, the study showed the efficacy of the newly proposed method for the effective design of a cushioning package. In future work, it may be meaningful to compare two approaches: the proposed optimization technique and topology optimization techniques, which can produce optimization shape considering topology and size for better structural performance (Zhou et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#

Kim¹,

Kum²,

Park³

2009

Mechanics Based Design of Structures and Machines

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In transportation and use environments, electronic appliances, especially those that are large and heavy, suffer many different types of mechanical shocks. Generally, to prevent damage to the products from severe shocks, various cushion materials used for packaging have been widely utilized. However, the external shape of electronic appliances is complex, and the mass distribution of the inside parts is unbalanced. Consequently, it is not easy when using empirical approaches to design the cushioning package to ensure that it has a high absorption of shock energy. In this study, experimental and analytical approaches have been used to propose an effective design process for the optimization of cushioning packages so that they have less volume and a greater cushioning ability. An examination of the optimization of cushioning package was conducted for a large-size refrigerator with a weight of more than 100 kg to demonstrate the usefulness of the proposed method; findings from the study show that the volume reduction of a package was as much as 22% with the reduction of maximum acceleration at 25%.

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Section: Resultsmentioning

confidence: 99%

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#

Kim¹,

Kum²,

Park³

2009

Mechanics Based Design of Structures and Machines

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“…This approach for topology optimization is called density method or Solid Isotropic Material with Penalization (SIMP). More details on this method can be found in Bendsøe and Sigmund (2003) and details on the implementation of SIMP method in Altair's OptiStruct solver can be found in Zhou et al (2004), Thomas et al (2002) and in the OptiStruct documentation (Altair Engineering, Inc. 1999). As discussed earlier, since wind turbine blades need to keep their exterior shape intact for aerodynamic purposes, the FE model had to be described in a way of being able to keep the exterior surface of the blade section intact while allowing the interior volume to be used as the design domain.…”

Section: Finite Element Model and Optimization Problem Formulationmentioning

confidence: 99%

Development of a structural optimization strategy for the design of next generation large thermoplastic wind turbine blades

Forcier

Joncas

2011

Struct Multidisc Optim

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This paper presents the development of a structural optimization process for the design of future large thermoplastic wind turbine blades. The optimization process proposed in this paper consists of three optimization steps. The first step is a topology optimization of a short untwisted and non tapered section of the blade, with the inner volume used as the design domain. The second step is again a topology optimization, but on the first half of a blade to study the effect of non symmetry of the structure due to blade twist and taper. Results of this optimization step are then interpreted to build a shell model of the complete blade structure to perform composite size optimization based on a minimum mass objective subjected to constraints on deflection, composite strength and structural stability. Different blade models using ribs are then optimized and compared against conventional blade structure (box spar structure without ribs and single web structure without ribs).The use of ribs in wind turbine blade structures, which is more adapted to thermoplastic composite manufacturing than for thermoset composites, leads to slightly lighter blades than conventional blade structures.

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“…This development has led to a steady increase in the applications of optimization technology in the past decade (Zhou et al, 2004). This has been especially evident since Bendsoe and Kikuchi's studies caused a significant interest in this topic (Bendsoe and Kikuchi, 1988).…”

Section: Introductionmentioning

confidence: 97%

Application of manufacturing constraints to structural optimization of thin-walled structures

Kuczek

2015

Engineering Optimization

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Topology optimization can be a very useful tool for creating conceptual designs for vehicles. Structures suggested by topology optimization often turn out to be difficult to implement in manufacturing processes. Presently, rail vehicle structures are made by welding sheet metal parts. This leads to many complications and increased weight of the vehicle. This article presents a new design concept for modern rail vehicle structures made of standardized, thin-walled, closed, steel profiles that fulfil the stress and manufacturing requirements. For this purpose, standard software for topology optimization was used with a new way of preprocessing the design space. The design methodology is illustrated by an example of the topology optimization of a freight railcar. It is shown that the methodology turns out to be a useful tool for obtaining optimal structure design that fulfils the assumed manufacturing constraints.

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An integrated approach to topology, sizing, and shape optimization

Cited by 75 publications

References 33 publications

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#

Development of a structural optimization strategy for the design of next generation large thermoplastic wind turbine blades

Application of manufacturing constraints to structural optimization of thin-walled structures

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An integrated approach to topology, sizing, and shape optimization

Cited by 75 publications

References 33 publications

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances#

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances#

Development of a structural optimization strategy for the design of next generation large thermoplastic wind turbine blades

Application of manufacturing constraints to structural optimization of thin-walled structures

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Product

Resources

About

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#

Effective Design of Cushioning Package to Improve Shockproof Characteristics of Large-Sized Home Appliances^#