期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
The Application of Dynamic Shock Mechanics Test in Engineering Blasting 被引量:1
1
作者 Lin Cheng Junfeng Liu 《Journal of World Architecture》 2020年第4期13-15,共3页
With the continuous advancement of China’s infrastructure construction to the west,according to the geographic situation in the southwest region,such as mountainous areas and complex terrain,the road construction pro... With the continuous advancement of China’s infrastructure construction to the west,according to the geographic situation in the southwest region,such as mountainous areas and complex terrain,the road construction process is inevitably accompanied by earth and rock blasting.To improve the quality and safety of the project,this paper addresses the problems of land and rock blasting faced in the construction of mountain road projects,taking the research of rock dynamic mechanics test as the starting point,and using a combination of theoretical analysis and experimental research methods.The specific research content includes the following parts:dynamic impact compression test(SHPB),dynamic splitting tensile test,and stress-strain curve analysis of the test results,which provides the theoretical basis and numerical parameters for the numerical simulation of future engineering blasting. 展开更多
关键词 Earth and stone blasting dynamic impact compression test(SHPB) dynamic splitting tensile test Stress-strain curve analysis
下载PDF
Effect of Temperature and Strain Rate on Dynamic Properties of Low Silicon TRIP Steel 被引量:5
2
作者 TIAN Rong LI Lin +2 位作者 B C De Cooman WEI Xi-chen SUN Peng 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2006年第3期51-56,共6页
The dynamic tensile test of 0.11C-0.62Si-1.65Mn TRIP steel was carried out at different strain rates and test temperatures. The results show that both temperature and strain rate affect the retained austenite transfor... The dynamic tensile test of 0.11C-0.62Si-1.65Mn TRIP steel was carried out at different strain rates and test temperatures. The results show that both temperature and strain rate affect the retained austenite transformation. At high strain rates, the uniform elongation decreases, whereas the total elongation and energy absorption increase. The tensile strength is less strain rate sensitive. With raising test temperature, the tensile strength is reduced and the mechanical properties generally deteriorate, especially at 110℃,However, excellent mechanical properties were obtained at 50℃ and 75℃. 展开更多
关键词 TRIP retained austenite dynamic tensile test strain rate tensile strength
下载PDF
In-situ three-dimensional visualization of dynamic tension deformation in ferrite stainless steels
3
作者 ZHANG Zhixia BI Hongyun LI Xin 《Baosteel Technical Research》 CAS 2013年第4期56-61,共6页
An improved three-dimensional (3-D) experimental visualization methodology is presented tor evaluating the fracture mechanisms of ferritic stainless steels by in-situ tensile testing with an environmental scanning e... An improved three-dimensional (3-D) experimental visualization methodology is presented tor evaluating the fracture mechanisms of ferritic stainless steels by in-situ tensile testing with an environmental scanning electron microscope (ESEM). The samples were machined with a radial notched shape and a sloped surface. Both planar surface deformation and sloping surface deformation-induced microvoids were observed during dynamic tension experiments, where a greater amount of information could be obtained from the sloping surface. The results showed that microvoids formed at the grain boundaries of highly elongated large grains. The microvoids nucleated in the severely deformed regions grew nearly parallel to the tensile axis, predominantly along the grain boundaries. The microvoids nucleated at the interface of particles and the matrix did not propagate due to the high plasticity of the matrix. The large microvoids propagated and showed a zigzag shape along the grain boundaries,seemingly a consequence of the fracture of the slip bands caused by dislocation pile-ups. The final failure took place due to the reduction of the load-beating area. 展开更多
关键词 three-dimensional (3-D) visualization MICROVOIDS in-situ dynamic tensile testing ferritic stainless steels
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部