Optimal Design of a Multifunctional Sandwich Panel With Foam Core: Lightweight Design for Flexural Stiffness and Acoustical Transmission Loss

Leite, Pierre; Thomas, Marc; Simon, Frank; Bréchet, Y.

doi:10.1002/adem.201400075

Cited by 13 publications

(8 citation statements)

References 21 publications

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“…But the problem of noise minimization is not solved. In [7], the dependence of sound insulation of a sandwich panel on stiffness is considered. However, the problem of noise minimization while observing noise regulations is not solved there either.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of the method of calculating a group of soundinsulating panels

Bielikov

Mamontov

Papirnyk

et al. 2019

EEJET

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of the method of calculating a group of soundinsulating panels

Bielikov

Mamontov

Papirnyk

et al. 2019

EEJET

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“…However, the method applies only to one given multilayer combination, and the design variables used are intrinsic properties of materials and thicknesses of layers. Leite et al [21] proposed a multi-objectives method using Pareto optimization, to design sandwich panels for both acoustic and mechanical performance. The method involves many material types for the core and skins, but is limited to only one configuration: the stacking order of layer types is fixed.…”

Section: Optimization Algorithms For Acoustic Materialsmentioning

confidence: 99%

An acoustic trade-off chart for the design of multilayer acoustic packages

2019

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This paper presents a novel trade-off chart to support the design of multilayer acoustic packages. In this multi-objective problem, a designer has to specify a combination of layers from a set of available acoustic materials and thicknesses. Material types may include porous, mass-weighted, facing, among others. The combination must meet requirements in terms of sound absorption, sound transmission loss, cluttering, mass, etc. While predictions and analyses can be made on predetermined multilayer acoustic packages using the transfer matrix method, statistical energy analysis, finite elements methods or modal analysis, comparing a large number of possible combinations is cumbersome. On the other hand, optimization methods can be used to identify optimal thicknesses or material properties for a given layer combination, but the obtained solution may not be industrially relevant since, in general, only a limited set of acoustic materials and layer thicknesses exist commercially. In this paper, a new design methodology is proposed, which takes into account only the feasible combinations and provides guidelines for compromises between different performance parameters. The three-step methodology is demonstrated through a case study inspired by the automotive industry. First, relevant categories of layer configurations are defined, and following these patterns, all possible combinations of materials from a given inventory are calculated and stored in a database. Then, for selected performance parameters, the Pareto set of "better combinations" is identified. Finally, the "better solutions" are displayed on a trade-off chart through utility functions that allow weighing the different performance parameters. The tool developed for doing so is applied to the case study, and two example situations are presented. For each situation, the trade-off chart provides several suitable solutions, which are discussed. The use of this new tool effectively induces gains of time at the early stage of design, when it is most crucial.

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“…Hudson et al [21] used an ant colony algorithm to explore the trade-offs between mass and cost minimization for a rail vehicle floor panel. Wang et al [43] and Leite et al [28] both used genetic algorithms (thereafter GA) to search databases including different kinds of materials, among which some were laminates.…”

Section: Introductionmentioning

confidence: 99%

A general optimization strategy for composite sandwich structures

Irisarri

Julien

Bettebghor

et al. 2021

Struct Multidisc Optim

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An original strategy for the design of large-scale composite sandwich structures is developed. Such structures are typical of launcher and spacecraft structures, but the methodology remains applicable to any thin-walled sandwich structure (such as aircraft fuselage panels or watercraft hulls). The method hinges on multi-step strategies devised for variable-stiffness laminates. Indeed, laminate optimization problems corresponds to large combinatorial design spaces and their efficient approximate solutions often combine continuous relaxation and metaheuristics. Typically, the first step consists of a gradientbased optimization that handles the large number of variables with a continuous representation of the composite mechanical behavior. In our work, this continuous representation is adapted to the specific features of laminated sandwich composites. In particular, we modeled the dependency of the material transverse shear stiffness on the F.-

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Optimal Design of a Multifunctional Sandwich Panel With Foam Core: Lightweight Design for Flexural Stiffness and Acoustical Transmission Loss

Abstract: International audienc

Cited by 13 publications

References 21 publications

Improvement of the method of calculating a group of soundinsulating panels

Improvement of the method of calculating a group of soundinsulating panels

An acoustic trade-off chart for the design of multilayer acoustic packages

A general optimization strategy for composite sandwich structures

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Optimal Design of a Multifunctional Sandwich Panel With Foam Core: Lightweight Design for Flexural Stiffness and Acoustical Transmission Loss

Abstract: International audienc

Cited by 13 publications

References 21 publications

Improvement of the method of calculating a group of sound­insulating panels

Improvement of the method of calculating a group of sound­insulating panels

An acoustic trade-off chart for the design of multilayer acoustic packages

A general optimization strategy for composite sandwich structures

Contact Info

Product

Resources

About

Improvement of the method of calculating a group of soundinsulating panels

Improvement of the method of calculating a group of soundinsulating panels