Derivation of the Stress-Strain Behavior of the Constituents of Bio-Inspired Layered TiO2/PE-Nanocomposites by Inverse Modeling Based on FE-Simulations of Nanoindentation Test

G.Lasko; I.Sch?fer; Z.Burghard; J.Bill; S.Schmauder; U.Weber; D.Galler

首页> 中文期刊> 《分子与细胞生物力学（英文）》 >Derivation of the Stress-Strain Behavior of the Constituents of Bio-Inspired Layered TiO2/PE-Nanocomposites by Inverse Modeling Based on FE-Simulations of Nanoindentation Test

Derivation of the Stress-Strain Behavior of the Constituents of Bio-Inspired Layered TiO2/PE-Nanocomposites by Inverse Modeling Based on FE-Simulations of Nanoindentation Test

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Owing to the apparent simple morphology and peculiar properties,nacre,an iridescent layer,coating of the inner part of mollusk shells,has attracted considerable attention of biologists,material scientists and engineers.The basic structural motif in nacre is the assembly of oriented plate-like aragonite crystals with a ‘brick’(CaCO3 crystals)and ‘mortar’(macromolecular components like proteins)organization.Many scientific researchers recognize that such structures are associated with the excellent mechanical properties of nacre and biomimetic strategies have been proposed to produce new layered nanocomposites.During the past years,increasing efforts have been devoted towards exploiting nacre’s structural design principle in the synthesis of novel nanocomposites.However,the direct transfer of nacre’s architecture to an artificial inorganic material has not been achieved yet.In the present contribution we report on laminated architecture,composed of the inorganic oxide(TiO2)and organic polyelectrolyte(PE)layers which fulfill this task.To get a better insight and understanding concerning the mechanical behaviour of bio-inspired layered materials consisting of oxide ceramics and organic layers,the elastic-plastic properties of titanium dioxide and organic polyelectrolyte phase are determined via FE-modelling of the nanoindentation process.With the use of inverse modeling and based on numerical models which are applied on the microscopic scale,the material properties of the constituents are derived.

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《分子与细胞生物力学（英文）》 |2013年第1期|P.27-42|共16页
作者
G.Lasko; I.Sch?fer; Z.Burghard; J.Bill; S.Schmauder; U.Weber; D.Galler;
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作者单位

Institute for Materials Testing Materials Science and Strength of Materials University of Stuttgart Pfaffenwaldring 32 D 70569 Stuttgart Germany;

Institute for Materials Testing Materials Science and Strength of Materials University of Stuttgart Pfaffenwaldring 32 D 70569 Stuttgart Germany;

Institute of Materials Science University of Stuttgart Heisenbergstrasse 3 D 70569 Stuttgart Germany;

Institute of Materials Science University of Stuttgart Heisenbergstrasse 3 D 70569 Stuttgart Germany;

Institute for Materials Testing Materials Science and Strength of Materials University of Stuttgart Pfaffenwaldring 32 D 70569 Stuttgart Germany;

Institute for Materials Testing Materials Science and Strength of Materials University of Stuttgart Pfaffenwaldring 32 D 70569 Stuttgart Germany;

Stuttgart University 070569 Stuttgart Germany;

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中图分类金属学与热处理;
关键词
Nanoindentation; stress-strain constitutive law; inverse modeling; biomimetics;

机译：纳米intentation;应力 - 应变本构法;反向建模;生物体;

Derivation of the Stress-Strain Behavior of the Constituents of Bio-Inspired Layered TiO2/PE-Nanocomposites by Inverse Modeling Based on FE-Simulations of Nanoindentation Test

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