Optimal rapid multidisciplinary response networks: RAPIDDISK

Nagendra, S.; Staubach, J. B.; Suydam, A.J.; Ghunakikar, S.J.; Akula, V.R.

doi:10.1007/s00158-004-0472-2

Cited by 14 publications

(3 citation statements)

References 26 publications

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“…The tools such as knowledge based engineering (KBE) [30], neural networks [31] and response surface modelling (RSM) [32] have been developed in and for the environment where the FEA is conventionally used, whereby to be successfully applied they require additional conditions usually unavailable in the conceptualisation phase. The literature search revealed that there were no prior attempts to define and develop a systematic FEA approach that can be used more effectively in the design conceptualisation phase.…”

Section: Proposed Design Concept Evaluation Methodsmentioning

confidence: 99%

Comparative Evaluation of Engineering Design Concepts Based on Non-Linear Substructuring Analysis

Kajtaz

Subic

Takla

2013

AMR

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The paper presents a novel approach to comparative evaluation of engineering design concepts that exhibit non-linear structural behaviour under load. The developed method has extended the substructures technique in order to apply the Finite Element Analysis (FEA) method to complex non-linear structural problems in the conceptual design phase. As conventional FE models based on substructures allow only linear analysis, it was necessary in this research to introduce a new algorithm capable of linearizing non-linear structural problems with sufficient accuracy in order to enable comparative evaluation of design concepts relative to each other under the given constraints and loading conditions. A comparative study with respect to model size, efficiency, accuracy and confidence was performed to validate the developed method. Obtained results indicate significant improvement over more traditional approaches to applying FEA in the conceptual design phase. The improvements achieved using the developed method compared to the traditional FE based approach are superior by a factor of 2.7 in efficiency and by a factor of 4.5 in confidence while not sacrificing the optimality of the solutions.

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Section: Proposed Design Concept Evaluation Methodsmentioning

confidence: 99%

Comparative Evaluation of Engineering Design Concepts Based on Non-Linear Substructuring Analysis

Kajtaz

Subic

Takla

2013

AMR

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“…The designers have been attracted by the Multidisciplinary Design and Optimization (MDO) methods (SobieszczanskiSobieski and Haftka 1997) and obtained success in designing some industrial products (Huang et al 2014;Berci et al 2014;Liem et al 2014;Chuang et al 2008;Kodiyalam et al 2004;Coelho et al 2008). Nagendra et al (2005) proposed a technique developed by RAPIDDISK which provides an optimal preliminary shape and design using MDO method. Rao et al (2007) adopted MDO method to optimize the disk with multiobjective including weight, manufacturing cost and fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Multidisciplinary design and optimization of the twin-web turbine disk

Zhang

Gou

et al. 2015

Struct Multidisc Optim

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The newly designed structures are employed to improve the high pressure turbine (HPT) disk to the expected performance. The twin-web disk (TWD) has been proven to be the future trend of the HPT disk due to its breakthrough in weight loss, strength and heat transfer efficiency compared to the conventional single web disk (SWD). Because of the multi-physics working conditions and intense coupling of multiple disciplines, the conventional design of the HPT disk is a labor intensive work. A series of design procedures, including asymmetrical computational fluid dynamics (CFD) analysis, inverse distance weighted (IDW) interpolation method, multidisciplinary feasible method (MDF), and design of experiments (DOE), are proposed to obtain the proper design for both TWD and SWD in an efficient way. In the present work, the multidisciplinary design of optimization (MDO) has been performed to find the proper shape of the TWD disk with the minimum mass. The results showed that the TWD exhibits a better performance in heat transfer and weight loss than SWD. The modeling and optimization procedure of this work can be referred for engineering design.

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“…Attempts to improve on these disadvantages by applying traditional intelligent tools for reduction of the FEA resource requirements are usually unsuccessful. The tools such as knowledge-based engineering (KBE) [Chapman and Pinfold (2001)], neural networks [Nagendra et al (2005)] and response surface modeling (RSM) [Uikey et al (2005)] have been developed in and for the environment where the FEA is traditionally used, and hence in order to be successfully applied they require additional provisions that are usually not available in early stages of design. The literature search revealed that there were no prior attempts to define and develop a systematic FEA approach that can be used more effectively in the design conceptualization phase.…”

Section: Introductionmentioning

confidence: 99%

An Extended Substructuring Technique for Efficient Evaluation of Nonlinear Load-Bearing Structures in the Conceptual Design Stage

Kajtaz

Subic

Takla

2014

Int. J. Comput. Methods

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The research presented in this paper has extended the substructuring technique into the nonlinear domain in order to apply the finite element analysis (FEA) method to complex nonlinear structural design problems in the conceptual design stage. As conventional FE models based on substructures allow only linear analysis, it was necessary in this research to introduce a new algorithm capable of linearizing nonlinear structural problems with sufficient accuracy in order to enable evaluation of engineering design concepts in a more objective and rigorous manner in the early stages of design. The developed method was implemented within a commercial FE solver, and validated using a select number of case studies. The results obtained for the two sample solutions indicate that the new method has achieved an improvement in accuracy of 90% and 98% respectively compared to the conventional FE-based approach applied to the same class of design problems.

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Optimal rapid multidisciplinary response networks: RAPIDDISK

Cited by 14 publications

References 26 publications

Comparative Evaluation of Engineering Design Concepts Based on Non-Linear Substructuring Analysis

Comparative Evaluation of Engineering Design Concepts Based on Non-Linear Substructuring Analysis

Multidisciplinary design and optimization of the twin-web turbine disk

An Extended Substructuring Technique for Efficient Evaluation of Nonlinear Load-Bearing Structures in the Conceptual Design Stage

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