4.6 Article

Experimental validation of a magnetorheological energy absorber design optimized for shock and impact loads

期刊

SMART MATERIALS AND STRUCTURES
卷 23, 期 12, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/0964-1726/23/12/125033

关键词

impact; energy absorber; magnetorheological

资金

  1. United States Naval Air Warfare Center at Patuxent, MD [N0042198H1116]
  2. University of Maryland (Ann G. Wylie Doctoral Dissertation Fellowship)
  3. Vertical Flight Foundation Fellowship

向作者/读者索取更多资源

A linear stroke adaptive magnetorheological energy absorber (MREA) was designed, fabricated and tested for intense impact conditions with piston velocities up to 8 m s(-1). The performance of the MREA was characterized using dynamic range, which is defined as the ratio of maximum on-state MREA force to the off-state MREA force. Design optimization techniques were employed in order to maximize the dynamic range at high impact velocities such that MREA maintained good control authority. Geometrical parameters of the MREA were optimized by evaluating MREA performance on the basis of a Bingham-plastic analysis incorporating minor losses (BPM analysis). Computational fluid dynamics and magnetic FE analysis were conducted to verify the performance of passive and controllable MREA force, respectively. Subsequently, high-speed drop testing (0-4.5 m s(-1) at 0 A) was conducted for quantitative comparison with the numerical simulations. Refinements to the nonlinear BPM analysis were carried out to improve prediction of MREA performance.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据