加载速率对高温后大理岩动态力学性能的影响研究

许金余; 刘石

加载速率对高温后大理岩动态力学性能的影响研究 English Version

许金余^{1, 2},
刘石¹

1. 空军工程大学机场建筑工程系，陕西西安 710038; 2. 西北工业大学力学与土木建筑学院，陕西西安 710072

基金项目: 国家自然科学基金项目（51078350）

详细信息

作者简介:
许金余(1963- )，男，博士，教授，博士生导师，主要从事结构工程和防护工程方面的研究。E-mail: ls_stone@126.com。

中图分类号: TU452
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出版历程
- 收稿日期: 2012-05-13
- 发布日期: 2013-05-26

Effect of impact velocity on dynamic mechnaical behaviors of marble after high temperatures

XU Jin-yu^{1, 2},
LIU Shi¹

1. Department of Airfield and Building Engineering, Air Force Engineering University, Xi°an 710038，China; 2. College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi°an 710072, China

摘要

摘要:
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- 岩石力学 /
- 高温 /
- 冲击压缩 /
- 加载速率 /
- 动态力学性能
Abstract: The tests on marble after different temperatures under dynamic loading at different impact velocities are carried out by using the split Hopkinson pressure bar (SHPB) apparatus 100 mm in diameter. The influences of impact velocity on the peak stress, peak strain and elastic modulus are studied. The test results show that the peak stress and peak strain after the same temperature increase linearly with the increasing impact velocity. When the temperature is above 800℃, the peak stress increases slightly and the peak strain increases obviously with the increase of impact velocity. However, the elastic modulus has no obvious impact velocity effect. The elastic modulus gradually declines with the increase of temperature. When the temperature reaches 1000℃, the elastic modulus nearly does not change with the variation of impact velocity. Considering the microstructure characteristics and the energy absorbency of marble, the effect of impact velocity on the dynamic mechanical characteristics is analyzed.
- rock mechanics /
- high temperature /
- impact compression /
- impact velocity /
- dynamic mechanical behaviors

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参考文献(15)

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