首页> 外文期刊>Materials Science and Engineering >Dynamic compressive loading of expanded perlite/aluminum syntactic foam
【24h】

Dynamic compressive loading of expanded perlite/aluminum syntactic foam

机译:膨胀珍珠岩/铝复合泡沫的动态压缩载荷

获取原文
获取原文并翻译 | 示例
           

摘要

This paper addresses the analysis of expanded perlite/aluminum (EP/A356) syntactic foams under dynamic compressive loading conditions. Experimental and numerical analysis are conducted in order to determine compressive stress-strain response, effective material properties and deformation mechanisms. Foam samples are manufactured by combining A356 aluminum alloy with expanded perlite particles that introduce 60-65% porosity. Under compressive loading these pores gradually collapse resulting in an approximately constant macroscopic stress level of the syntactic foam. Testing at different compression velocities shows that the expanded perlite particles increase the compression resistance at higher strain rates. The effective material properties of the syntactic foam increase both with density and loading velocity. Infrared (IR) thermal imaging and finite element analysis allowed the independent identification of the dominant deformation mechanism: single struts that are parallel to the loading direction buckle and trigger the formation of multiple collapse bands that are approximately perpendicular to the loading direction.
机译:本文讨论了在动态压缩载荷条件下膨胀珍珠岩/铝(EP / A356)复合泡沫的分析。为了确定压应力-应变响应,有效的材料性能和变形机理,进行了实验和数值分析。泡沫样品是通过将A356铝合金与膨胀的珍珠岩颗粒(产生60-65%的孔隙率)结合使用而制成的。在压缩载荷下,这些孔逐渐塌陷,导致句法泡沫的宏观应力水平大致恒定。在不同的压缩速度下进行的测试表明,膨胀的珍珠岩颗粒在较高的应变速率下增加了抗压缩性。复合泡沫的有效材料性能随密度和加载速度的增加而增加。红外(IR)热成像和有限元分析可以独立识别主要的变形机制:平行于加载方向的单个撑杆弯曲并触发形成多个垂直于加载方向的塌陷带。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号