Research Papers

Simulation-Based Robust Design of Multiscale Products

[+] Author and Article Information
Alex Ruderman

 Georgia Institute of Technology, Atlanta, GA 30332aruderman7@gmail.com

Seung-Kyum Choi1

 Georgia Institute of Technology, Atlanta, GA 30332schoi@me.gatech.edu

Jiten Patel

 Georgia Institute of Technology, Atlanta, GA 30332pjiten@gmail.com

Abhishek Kumar

 Georgia Institute of Technology, Atlanta, GA 30332supershake@gatech.edu

Janet K. Allen

 University of Oklahoma, Norman, OK 73019janet.allen@ou.edu


Corresponding author.

J. Mech. Des 132(10), 101003 (Sep 30, 2010) (12 pages) doi:10.1115/1.4002294 History: Received August 20, 2009; Revised July 27, 2010; Published September 30, 2010; Online September 30, 2010

The current research proposes an integrated framework for product design that incorporates simulation-based tools into the early design stage to achieve optimum multiscale systems. The method to determine the appropriate cellular material-property relations for the internal material structures of the system is through a topology optimization technique and a multiscale design process. Specifically, the reliability-based topology optimization (RBTO) and a multi-attribute decision design method are integrated into the inductive design exploration method (IDEM). The RBTO method is introduced to determine optimal topologies at the mesoscale. The multi-attribute decision design method is used for decision support in the design process of the macroscale systems. IDEM offers the capability for concurrent design on multiple scales providing an approach for the integration of the other two methods. An example of the developed multiscale design framework is presented in terms of a hydrogen storage tank used in a hydrogen fuel cell for automotive applications. The multiscale tank design will feature a high strength cellular structured wall, resulting in a large weight reduction.

Copyright © 2010 by American Society of Mechanical Engineers
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Figure 1

Multiscale design for hydrogen storage tank

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Figure 2

Multi-attribute optimization via conjoint analysis

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Figure 3

Topological model for RBTO framework

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Figure 4

Stochastic local regression (27)

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Figure 5

Steps of IDEM procedure (2)

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Figure 6

EMI calculation in a direction (2)

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Figure 7

Proposed multiscale framework

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Figure 8

Cross section of hydrogen storage tank

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Figure 9

Mesoscale hydrogen tank model

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Figure 10

Information flow for multiscale tank problem

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Figure 11

Part-worth plots for hydrogen storage tank attributes

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Figure 12

Topological geometries for 2×2 unit cell

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Figure 13

Optimum topology for cross-sectional area

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Figure 14

Mesostructured finite element model of cylindrical portion of hydrogen storage tank




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