Design attributes for geometry optimization process of thin walled honeycomb structures

Sadeghi Esfahlani, Shabnam and Shirvani, Hassan and Nwaubani, Sunny O. and Shirvani, Ayoub (2012) Design attributes for geometry optimization process of thin walled honeycomb structures. In: ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Washington DC, USA.

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Thin walled cellular structures have the ability to absorb impact energy during crashing thus it is important to enhance the crashing efficiency and optimise the structural reliability. This paper discusses the honeycomb cell configuration optimization procedure. For the design optimization, the response surface method (RSM) is used to formulate the complex design where the energy absorption (EA) representing the structure’s ability of absorbing energy was selected as objective, the Y split side parting length w1 , w2 , and thickness T1 are defined as three design variables, and the maximum crushing force (Max.F) occurs as constraint. During this distinctive optimization, the (RSM) was combined with detailed geometrically simplified finite element (FE) model using ANSYS/LS-DYNA (pre-processor), LS-DYNA (solver) and LS-Opt (optimiser). RSM combined with (FE)model without user intervention, was the effective tool to optimize non-linear impacted cellular structures. Optimal design achieved through LS-OPT is compared to the validated results for accuracy and effectiveness.

Item Type: Conference or Workshop Item (Paper)
Keywords: Finite element, Optimization, Honeycomb, Response surface method, Crashworthiness, DOE, D-optimal
Faculty: ARCHIVED Faculty of Science & Technology (until September 2018)
Depositing User: Repository Admin
Date Deposited: 09 Feb 2015 15:41
Last Modified: 09 Sep 2021 16:17

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