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首页> 外文会议>Proceedings of the 2nd international symposium on impact engineering >DYNAMIC BEHAVIOUR AND DAMAGE OF POLYCARBONATE SUBJECTED TO COMPRESSIVE AND REPEATED COMPRESSIVE IMPACT LOADING
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DYNAMIC BEHAVIOUR AND DAMAGE OF POLYCARBONATE SUBJECTED TO COMPRESSIVE AND REPEATED COMPRESSIVE IMPACT LOADING

机译：压缩和反复压缩冲击载荷作用下聚碳酸酯的动力特性和损伤

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摘要

Dynamic deformation of polycarbonate (P-C), a thermoplastic polymer, has been studied using three types of compressive impact loading : the dynamic compression and dynamic repeated compression using a split Hopkinson pressure bar and normal plate impact testing. These tests allow to obtain data over a strain-rate window between 10~3 to 10~5 s~(-1). Through these data, thermo-mechanical effects due to adiabatic deformation at high strain-rate loading are observed on the stress-strain relationship as well as the evolution of the microstructure. It is also found that the mechanisms of deformation or fracture are totally different while the polycarbonate is loaded at strain-rates between 10~3 and 10~4 s~(-1) or at strain-rates in the range of 10~4 to 10~5 s~(-1). A model of constitutive equation which takes into account the above cited effects is developped.
机译：使用三种类型的压缩冲击载荷研究了聚碳酸酯（P-C）的动态变形：使用分开的Hopkinson压力杆的动态压缩和动态重复压缩以及正常的板冲击试验。这些测试允许在10〜3到10〜5 s〜（-1）之间的应变率窗口上获取数据。通过这些数据，可以观察到在高应变率载荷下绝热变形引起的热机械效应对应力-应变关系以及微观结构的演变。还发现，当聚碳酸酯以10〜3到10〜4 s〜（-1）的应变速率或10〜4到1的应变速率加载时，变形或断裂的机理完全不同。 10〜5 s〜（-1）。建立了考虑上述效应的本构方程模型。

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  • 来源
  • 会议地点 Beijing(CN);Beijing(CN)
  • 作者

    Hong R.M.; Chiem C.Y.;

  • 作者单位

    Research Group on 'Dynamic Plasticity and Bulk Damage of Materials' Ecole Centrale de Nantes (ECN), Laboratoire Mecanique-Materiaux 1, Rue de la Noe, 44072 Nantes Cedex 03, France;

    Research Group on 'Dynamic Plasticity and Bulk Damage of Materials' Ecole Centrale de Nantes (ECN), Laboratoire Mecanique-Materiaux 1, Rue de la Noe, 44072 Nantes Cedex 03, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械动力学;挤压;
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