共搜索到3397条信息，每页显示10条信息，共340页。用时：0小时0分0秒812毫秒
Transverse Distributions of Front and Back Tension Stresses in Cold Strip Rolling刘宏民,连家创摘 要:<正> In this paper,such a new lateral displacement... to simulate strip rolling process.Front and back tension stressesare formulated.The computed results of the transverse distributions of the front and back tension stresses areclose to the experimental......
......
covering this underlying structure at more reaction steps was confirmed by exploiting surface-enhanced Raman scattering (SERS). Key words: triangular Au-Ag framework nanostructures; multi-stage galvanic replacement reaction; surface plasmon resonance; surface-enhanced Raman scattering 1 Introduction Recently, many scientists have interested in bimetallic nanostructures comprised of noble......
. If all the electrical field quantities are made to vanish, then equation (1) reduces to the dynamic J-integral of fracture mechanics. For example, the scattering of an incident anti-plane shear wave.... As, . As , . This is to say, the mode-Ⅲ dynamic stress intensity factor approaches to corresponding static value. Key words: dynamic-integral; conservation; scattering of anti-plane shear wave......
挤压；外转角半径；数值模拟；背压；纯钛 中图分类号:TG386.1 文献标识码:A Simulations of influence of outer angular radius and back pressure on ECAP of pure titanium LI Ji-zhong, DING Hua, ZHAO Wen-juan.... The back pressure can increase the value of equivalent strain. Besides, uniform strain distribution can also be obtained by adopting reasonable back pressure and outer angular radius. Key words: equal......
包变换; 粗糙度; AIEM; two-scale; microwave scattering model; wavelet packet transform; roughness; AI-EM; [全文内容正在添加中] ......
algorithm by Genetic algorithm (GA) and error back propagation algorithm (BP) was used to tune the weight values of the network. Finally, the improved neural network was utilized to identify the AUV... of convergence and identification precision. Key words: underwater vehicle; system identification; neural network; genetic algorithm; back propagation algorithm 随着科学的迅猛发展,控制系统越来越复杂,控制精度要求也越来越高,精确建模就尤为重要,因此,被控对象......
as electrolysis material. The technological parameters such as back electromotive force (BEMF), cell voltage, current and electrolysis waveform were measured by testing device of molten salt electrolysis... cathode method; back electromotive force; current efficiency 含钙的铝基合金是近几年发展起来的新型超塑性铝合金,在钢铁工业中可作为添加剂起到去硫,脱氧及净化作用[1-7].目前,工业上生产铝钙合金主要采用对掺法,将纯铝和金属钙在混合炉中重熔,配制铸成一定组成的铝钙合金.由于钙极易被氧化,在制造合金过程中烧损很大,这不但增加了二次重熔中钙的......
......
; 文章编号:1672-7207(2015)02-0638-07 Back-analysis of shear strength parameters for slope with broken line sliding surface based on upper bound approach CHEN Jingyu1, 2... of different sections can be back calculated. And then the graphical method was used to determine the shear strength parameters, i.e. the intersection point of c-φ curves for different sections. In order......
