A simple nonlinear model to simulate the localized necking and neck propagation

Lanzoni Luca; Tarantino Angelo Marcello

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A simple nonlinear model to simulate the localized necking and neck propagation

机译：一个简单的非线性模型来模拟局部颈缩和颈展

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摘要

This paper deals with the equilibrium problem in nonlinear dissipative inelasticity of damaged bodies subject to uniaxial loading and its main purpose is to show the interesting potentialities offered by the damage theory in modeling the necking and neck propagation phenomena in polymeric materials. In detail, the proposed mechanical model is a two-phase system, with the same constitutive law but with different levels of damage for each phase. Despite its simplicity, it is shown that the model can straightforwardly reproduce the overall load elongation curve provided by experimental tensile tests by involving only five parameters Of clear physical meaning. (C) 2016 Elsevier Ltd. All rights reserved.

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来源
《International journal of non-linear mechanics》 |2016年第9期|94-104|共11页
作者
Lanzoni Luca; Tarantino Angelo Marcello;
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作者单位

Univ San Marino, DESD, Via Salita Rocca 44, Montegiardino 47890, San Marino|Univ Modena & Reggio Emilia, DIEF, Via Vivarelli 10, I-41125 Modena, Italy;

Univ Modena & Reggio Emilia, DIEF, Via Vivarelli 10, I-41125 Modena, Italy;

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正文语种 eng
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关键词
Finite inelasticity; Damage; Constitutive behavior; Necking; Neck propagation;

机译：有限的弹性;损伤;本构行为;颈缩;颈展;

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A simple nonlinear model to simulate the localized necking and neck propagation

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