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Developing a Simplified Surrogate Model for Structured Sheet Metals with Numerical and Experimental Comparisons
Author(s) -
Mahlerde Silva Tina,
Kühhorn Arnold,
Kober Markus
Publication year - 2013
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201310045
Subject(s) - homogenization (climate) , component (thermodynamics) , distortion (music) , computer science , buckling , structural engineering , mathematical optimization , mechanical engineering , mathematics , engineering , physics , biodiversity , ecology , amplifier , computer network , bandwidth (computing) , biology , thermodynamics
It is important to steadily refine lightweight designs with regard to saving resources and energy in common with good economic efficiency. Thin structured sheet metals offer significantly improved component stiffnesses in addition to an upgraded buckling behavior compared to flat, unstructured sheet metals. By using a distortion energy based homogenization method it is possible to develop a mechanical surrogate model which describes effective mean properties. The accurate selection of symmetric and periodic boundaries enables to determine the required parameters. The conditions are contemplated on elementary cells whose structural mechanical behavior is representative for the elastic behavior of large structures. By doing this, the amount of elements can be reduced and thus the calculating time of large components can considerably be saved. For an efficient surrogate model it is required to analyze and compare numerical with experimental investigations. Some different versions of optimization will be tested to get better approximation of the data. (© 2013 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)