the testing study on dynamic property of rock under high strain rate is of important significance for national defence and civil construction.
巖石在高应变率下的动力学性能研究在国防和民用建设中具有重要意义。
both dendritic structure and high strain rate enhance the deformation stress of the semi-solid alloy, and enable the stress to increase with strain continuously.
枝晶组织和高变形速率提高半固态合金的变形应力,并使应力随应变增大而单调提高;
high strain rate will occur at the tip of a growing crack, whether quasi-static or dynamic growth, due to the existence of strain singularity.
在扩展裂纹尖端,无论是準静态扩展还是动态扩展,由于应变奇异性的存在,出现较高的应变速率。
the current status of research on high strain rate superplasticity of magnesium alloys is then examined, and several problems to be solved and future directions are suggested.
综述了镁合金超塑性的研究进展,总结了镁合金超塑性变形的微观机理,评述了镁合金高应变速率超塑性的研究状况,提出了几个需要解决的问题和研究方向。
the dynamic split tests of marble using both brazilian disc and flattened brazilian disc were performed at high strain rate with split hopkins pressure bar(shpb) of 00mm diameter.
利用直径00mm的分离式hopkinson桿对大理巖巴西圆盘和平台巴西圆盘试样进行了动态劈裂实验。
meanwhile, the superplasticity of glass-ceramics and nanostructured ceramics were also presented. the high strain rate superplasticity was summarized particularly.
同时介绍了玻璃陶瓷、纳米陶瓷的超塑性,并兼顾了一些结构陶瓷在高应变速率下的超塑性。
the dominant process of superplastic deformation is fine grain boundary sliding, and an appropriately small amount of liquid phase can enhance the high strain rate superplasticity of the composite.
超塑性变形的主要机制是细小晶粒的晶界滑动,适当的微量液相有利于该复合材料的高应变速率超塑性。
results show that static recrystallization proceeds rapidly under the conditions of heavy deformation, high strain rate and at low temperature in the range of 850-800 ℃.
结果表明,在大变形量下,即使变形温度较低(850~800℃),应变速率较高时,静态再结晶的速度仍然很快。
the results show that the influences of c, v content on εp are related to strain rate. the influence law at high strain rate is different from that at low strain rate.
研究结果表明,c、v对含钒微合金钢动态再结晶峰值应变的影响与应变速率相关,高应变速率和低应变速率下元素的影响规律不同。
the recent development of the high strain rate superplasticity(hsrs), its deformation mechanism and commercial applications are reviewed in the paper.
综述了高应变速率超塑材料及其变形机理和工业应用的最新进展。
because of the difficulty of concrete high strain rate experimental techniques, there are many disputes about how to describe the dynamic mechanics properties of concrete.
由于混凝土高应变率实验技术的困难,目前对于混凝土动态力学行为的描述存在较大的争议。
the fracture strain energy density at the high strain rate is mainly determined by the initial elastic modulus and the unstable strain and affected by the temperature and the strain rate.
在高应变率下,断裂应变能密度主要由初始弹性模量和失稳应变共同决定,受温度效应和应变率效应的综合影响。