The Effect of Polyurea Mass Ratio on the Acceleration Mitigation Capabilities of Dynamically Loaded Structures

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• 作者：Jarrod Bonsmann ; W. L. Fourney
• 关键词：Acceleration mitigation ; Polyurea ; Dynamic loading
• 刊名：Journal of Dynamic Behavior of Materials
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：1
• 期：1
• 页码：28-42
• 全文大小：1875KB
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• 作者单位：Jarrod Bonsmann (1)
  W. L. Fourney (1)
  
  1. Dynamic Effects Laboratory, University of Maryland, College Park, USA
  
• 刊物类别：Metallic Materials; Continuum Mechanics and Mechanics of Materials;
• 刊物主题：Metallic Materials; Continuum Mechanics and Mechanics of Materials;
• 出版者：Springer International Publishing
• ISSN：2199-7454

文摘

This research investigates the acceleration mitigation effect that polyurea coatings have on dynamically loaded structures. In order to complete this study high-pressure gas guns and small explosives experimentation was conducted. The explosives designated for this research are exclusively buried in saturated sand, which serves as the loading mechanism for those experiments. Cantilevered beams are used in conjunction with the gas gun while cylindrical plates were the chosen apparatus for the explosive experiments. Piezoelectric accelerometers are used in conjunction with high-speed videography to collect experimental data. At the conclusion of the research it was determined that polymeric coatings were beneficial in mitigating acceleration resulting from explosive loading and for dynamically loaded beams. The effects in both cases depend greatly on the amount of polyurea (mass ratio of polyurea to metal) applied to the metallic structure. Keywords Acceleration mitigation Polyurea Dynamic loading