低速大质量冲击下伪弹性TiNi合金固支梁响应的数值研究

吴会民;唐志平

振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 6-10.

PDF(2299 KB)
PDF(2299 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 6-10.
论文

低速大质量冲击下伪弹性TiNi合金固支梁响应的数值研究

  • 吴会民,唐志平
作者信息 +

The Numerical Simulation Research on Response of the TiNi Clipped-Beam under Large Mass Low-speed Impact Loading

  • WU Hui-min TANG Zhi-ping
Author information +
文章历史 +

摘要

摘要:本文对低速大质量冲击下伪弹性TiNi合金固支梁的响应和相变演化特性进行了数值研究,目的是了解相变与结构动态响应之间的相互影响。结果表明,落锤冲击载荷作用下,相变固支梁的响应可以分为5个阶段:弹性波动响应,局部相变失稳,驻定相变铰形成,相变铰区扩展和相变铰移动,杆机构。相变铰为弯矩和轴力共同作用下形成的广义铰,同时表现出与塑性铰不同的特征。

Abstract

Abstract: The dynamic response of the TiNi alloy clipped beam under large mass low-speed impact loading and the phase transformation evolutional character were investigated by employing numerical method. The purpose of this study is to explore the effect of phase transformation on the dynamic behavior of the structure. It is shown that the response consists of five periods, i.e. elastic flexural wave propagation; localization phase transformation which leads to structural instability; stationary phase transformation hinge forming; expanding of the phase transformation hinge and traveling of the phase transformation hinge; hinged bar structure. The phase transformation hinge is a general hinge which is formed under the bending moment and axial force. The phase transformation hinge has different characters compared with plastic hinge.

关键词

落锤 / TiNi合金 / 固支梁 / 相变铰 / 冲击响应

Key words

drop hammer / TiNi alloy / clipped-beam / phase transformation hinge / dynamic response

引用本文

导出引用
吴会民;唐志平. 低速大质量冲击下伪弹性TiNi合金固支梁响应的数值研究[J]. 振动与冲击, 2009, 28(8): 6-10
WU Hui-min TANG Zhi-ping. The Numerical Simulation Research on Response of the TiNi Clipped-Beam under Large Mass Low-speed Impact Loading[J]. Journal of Vibration and Shock, 2009, 28(8): 6-10

PDF(2299 KB)

Accesses

Citation

Detail

段落导航
相关文章

/