共搜索到3733条信息,每页显示10条信息,共374页。用时:0小时0分0秒515毫秒
blank; quasi-cup specimen; PVC Teflon-filler; polyurethane Teflon-filler; forming energy 1 Introduction Innovations introduced in metal forming processes during the last 50 years can be placed... different parts: absorbed energy by the blank and Teflon-filler. Fig. 1 Schematic sketch of Teflon-pad forming process (a), and quasi-cup specimen, initial blank and rigid die and punch (b) Table 2......
......
Effect of non-uniform stress characteristics on stress measurement in specimen LIAO Kai(廖 凯)1, 2, WU Yun-xin(吴运新)1, GONG Hai(龚 海)1, YAN Peng-fei(闫鹏飞)1, GUO Jun-kang(郭俊康)1 1. School of Mechanical...; Abstract: There is a remarkable difference in stress distribution between a specimen and a plate removed from the specimen. The plate presents a uniform stress distribution whereas......
J. Cent. South Univ. Technol. (2011) 18: 2201-2206 DOI: 10.1007/s11771-011-0963-4 Numerical simulation of asphalt mixture based on three-dimensional heterogeneous specimen ZHANG Xiao-ning(张肖宁)1, WAN... and fine aggregates) and air voids, based on three-dimensional (3D) heterogeneous specimen, X-ray computerized tomography (X-ray CT) was used to scan the asphalt specimens to obtain the real internal......
-cleavage trapezoidal open specimen under impact loads LANG Lin(郎林)1, ZHU Zhe-ming(朱哲明)2, WANG Han-bing(王寒冰)1, HUANG Jian-wei(黄建伟)1, WANG Meng(王蒙)2, ZHANG Xian-shang(张宪尚)2 1. State Key Laboratory...). To further explore the effect of loading rates on crack dynamic responses, a large-size single-cleavage trapezoidal open (SCTO) specimen was proposed, and impacting tests using the SCTO specimen under......
; Double pull specimen more...; Abstract: A new "conceptual" design named "double pull" specimen was proposed in order to measure the bond-slip (δ-τ) relationship......
Effects of specimen size on flow stress of micro rod specimen WANG Chun-ju(王春举)1, GUO Bin(郭 斌)1, SHAN De-bin(单德彬)1, SUN Li-ning(孙立宁)2 1. School of Materials Science and Engineering...: With the miniaturization of parts, size effects occur in the micro-forming processes. To investigate the effects of the specimen size on the flow stress, a series of upsetting deformation experiments were carried out......
Influence of specimen uniformity on mechanical behaviour of unsaturated soilYANG Gang(杨钢), YANG Qing(杨庆), ZHANG Jin-li(张金利)(Institute of Geotechnical Engineering, Dalian University of Technology, Dalian 116024, China)Abstract:Pressure plate instrument is employed during drying, and unconfined compressive strength test is performed on the unsaturated specimen. Curves of shear force versus shear......
......
RHEOLOGICAL BEHAVIOUR FOR AN ANHYDRITE SPECIMEN AND DETERMINATION OF ITS LONG TIME STRENGTH李宏摘 要:<正> Based on the method of torsional creep, the creep laws of an anhydrite specimen are studied in this paper. When a shearing stress applied to the specimen is less than a value, only the primary stage takes place, How -ever, when the shearing stress......