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of full tailings cemented backfill under impact loading, a separate Hopkinson bar (SHPB) test technique was used to perform impact loading tests on the full tailings cemented backfill. The test results show.... Energy consumption characteristics and damage characteristics of full tailings cemented backfill under impact loading[J]. The Chinese Journal of Nonferrous Metals, 2021, 31(6): 1661-1671. DOI......
short crooked-cracks can be seen on the fracture surface (marked by white arrows). These cracks are the bonding interface of the original scraps. During impact test, inconsistent deformation... and the lowest elongation to failure of 5.46%. Impact tests were performed at room temperature (27 °C), -70 and -130 °C, respectively. Impact toughness decreases with decreasing the impact temperature......
-soil stress ratio, neutral plane position and impact factors which were closely related to the systemic load transfer law were studied using orthogonal test method, and based on the analytical... upper and necessary should be paid attention to lower parts of the system. Key words: composite ground under flexible foundation; load transfer law; orthogonal test; impact factor 复合地基按基础刚度的不同可分为2类[1......
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J. Cent. South Univ. (2017) 24: 1252-1262 DOI: 10.1007/s11771-017-3529-2 Particle size distribution of coal and gangue after impact-crush separation YANG Dao-long(杨道龙)1, LI Jian-ping(李建平)1, DU Chang... and gangue, the mineral material impact experiments were conducted utilizing the hardness difference between coal and gangue according to the uniaxial compression experiments. The broken coal and gangue......
Centrifugal model test and numerical simulation of vertical earth pressure on soft foundation box culvertZHANG Jun-hui(张军辉)1, 2, YAO Yong-sheng(姚永胜)1, ZHENG Jian-long(郑健龙)1, ZHANG Tao(张涛)3(1... the interaction of the soil-culvert-foundation system, both a centrifugal model test and a numerical simulation were conducted and the comparisons with the current methods to determine the load......
Effects of Craddition on Charpy impact energy in austenitic 0.45C-24Mn-(0,3,6)Cr steelsSeok Gyu Lee1,Bohee Kim1,Min Cheol Jo1,Kyeong-Min Kim1,Jinho Bae3,Byeong-Joo Lee1,Seok Su Sohn4,Sunghak Lee11... and Engineering, Korea University摘 要:Effects of Cr addition(0,3,and 6 wt%) on Charpy impact properties of Fe-C-Mn-Cr-based steels were studied by conducting dynamic......
of cavities, the drop weight impact test was carried out on five types of granite specimens with a single hole, double horizontal holes, double vertical holes, three horizontal holes and three vertical holes... is simpler than that of the vertically arranged hole specimens and the crack type is not affected by the number of holes. Key words: rock with cavities; drop weight test; impact load; digital image correlation......
结果与分析 2.1 室温拉伸试验结果 进行焊缝全厚度拉伸,冲击试验,沿焊缝厚度取样位置如图1所示.各层试样的拉伸试验结果(均值)见表2. 图1 拉伸冲击试样取样位置 Fig.1 Sampling position of tensile and impact test 表2 TA2窄间隙焊接接头的室温拉伸试验结果 Table... line. The results show that every layer can be eligible and the TA2 joints welded by narrow gap TIG welding are of high-quality. Furthermore, the impact toughness of welding joints in the areas of welded......
to study the response laws of impact factors through less test in the complicit problems; and there is a kind of non-linear relationship between the factors and broken rate. And the most significant.... Test study of impact failure of rock subjected to onedimensional coupled static and dynamic loads[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(2): 251-260. (编辑 邓履翔) 收稿日期......
