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首页> 美国政府科技报告 >Characterization of the Material Microstructure for Reactive Material Design. 3rd Quarterly Progress Report II/2008; Quarterly progress rept. no. 3, Apr-Jul 2008
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Characterization of the Material Microstructure for Reactive Material Design. 3rd Quarterly Progress Report II/2008; Quarterly progress rept. no. 3, Apr-Jul 2008

机译：反应材料设计的材料微观结构表征。 2008年第三季度进度报告;季度进展情况。没有。 3，2008年4月至7月

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The report addresses the current status of the tasks 'material testing', 'structure generator' and 'microstructural finite-element solver'. Material tests were carried out for several samples (Cu, Fe, CuFe). Tensile tests, flyer plate impact tests and Taylor tests were conducted, where spallation and fragmentation occurred under relevant test conditions. Capturing and characterization of fragments has been achieved in some of these tests. A quantitative determination of the micro-structure of a FeCu sample was conducted and several methods were tested for the generation of geometry models and meshes. The methods applied also included commercial software. The microstructural FE solver, MICROFEM, has been equipped with interface elements, while the work on suitable tetrahedral elements still continues. In addition to the work on MICROFEM alternative concepts of simulation were explored. This includes LS DYNA simulations on the basis of structure models rendered on hexahedral grids. A physical model for a Cu sample has been calibrated to tensile test results and was used for simulations with impulsive loading.

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