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An analytical study of mechanical behavior of polypropylene/calcium carbonate composites under uniaxial tension and three-point bending

机译：单轴拉伸三点弯曲下聚丙烯/碳酸钙复合材料力学性能的分析研究

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摘要

Analytic solutions of test curve are beneficial to analyze mechanical properties and to understand the reason behind mechanical behaviors of materials. Herein, two relationships about both average true strain and average true stress on necking were obtained. Further, the homogenizing constitutive equation was obtained according to the linear viscoelastic constitutive equation becoming the foundation of solving analytic solutions of material behavior. The applicability of analytic solutions in the entire test range was discussed and improved by experimental results of both uniaxial tension and three-point bending. Analytic solutions of test curve in this work conform well to the experiments. The moduli and strengths of polypropylene calcium carbonate composites were predicted according to this model. This mathematical model indicates that mechanical behavior of linear viscoelastic material was the outcome of competition between stress-increasing of extension and stress-decreasing of relaxation. It is hoped that the empirical formulae of two routine test curves can bring convenience for an analytical study of mechanical behavior of linear viscoelastic materials. (C) 2017 Elsevier Ltd. All rights reserved.
机译：测试曲线的解析解有利于分析力学性能以及理解材料力学行为的原因。在此，获得关于颈缩的平均真实应变和平均真实应力两者的两个关系。此外，根据线性粘弹性本构方程成为求解材料行为解析解的基础，获得了均化本构方程。讨论了分析溶液在整个测试范围内的适用性，并通过单轴拉伸和三点弯曲的实验结果进行了改进。本工作中测试曲线的解析解与实验吻合得很好。根据该模型预测了聚丙烯碳酸钙复合材料的模量和强度。该数学模型表明，线性粘弹性材料的力学行为是拉伸应力增加和松弛应力减小之间竞争的结果。希望两条常规测试曲线的经验公式能够为分析线性粘弹性材料的力学行为带来方便。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composite Structures》 |2017年第7期|370-381|共12页
  • 作者

    Xiong Zhongqiang; Li Yuqi; Pan Lulu; Yu Jinhong; Lu Shaorong;

  • 作者单位

    Guilin Univ Technol, Coll Mat Sci & Engn, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China;

    Guilin Univ Technol, Coll Mat Sci & Engn, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China;

    Guilin Univ Technol, Coll Mat Sci & Engn, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China;

    Chinese Acad Sci, Key Lab Marine New Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China;

    Guilin Univ Technol, Coll Mat Sci & Engn, Key Lab New Proc Technol Nonferrous Met & Mat, Minist Educ, Guilin 541004, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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