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A new adaptive bending method using closed loop feedback control T. WELO, B. GRANLY Department of Engineering Design and Materials, Norwegian University of Science and Technology (NTNU), Richard... improving product quality is required. A new rotary compression bending set-up with automated closed-loop feedback control is thus being developed. By transferring in-process measurement data......
Thin-walled aluminum alloy tube NC precision bending based on finite element simulation GU Rui-jie(谷瑞杰), YANG He(杨 合) , ZHAN Mei(詹 梅), LI Heng(李 恒) School of Materials Science and Engineering... alloy tube NC precision bending. So thin-walled aluminum alloy tube NC precision bending based on finite element simulation is put forward. The finite element model of thin-walled aluminum alloy tube NC......
. The equivalent load method was employed to account for random repeated loads in structural reliability analysis. Degradation of material strength was regarded as a Gamma process. The probabilistic... degradation and repeated load is closer to the practicality than the method of considering reliability calculation only. Its decreasing velocity is faster than the traditional reliability. The reliability......
Springback of thin-walled tube NC precision bending and its numerical simulation GU Rui-jie(谷瑞杰), YANG He(杨 合), ZHAN Mei(詹 梅), LI Heng(李 恒) College of Materials Science and Engineering... tube NC precision bending. The elastic-plastic finite element method was proposed to study the springback process of thin-walled tube NC precision bending and the combination of dynamic explicit......
电液伺服阀用压电弯曲元件特性的实验研究 程光明1,鄂世举2,杨志刚1 (1.吉林大学机械学院,长春,130025;2.浙江师范大学机械设备与测控技术研究所,浙江,金华,321004) 摘要:研制了一种压电弯曲元件型压电驱动器,该驱动器用于电液伺服阀的电-机械转换器.压电驱动器由三层结构构建,其中中间弹性层为铍青铜,在铍青铜的上下表面各粘接一片压电晶片,材料为PZT-5H.利用激光测微仪LC-2400A及LV-1610对压电驱动器的输出位移,位移滞环及谐振频率进行了实验测量,分析了压电驱动器尺寸与其特性之间的关系.实验结果表明,该驱动器满足所设计电液伺服阀的性能要求. 关键词:压电弯曲元件; 实验研究; 电液伺服阀; piezoelectric bending actuator; experiment research; hydroelectric servo-valve......
On the texture memory effect of a cross-rolled Mg-2Zn-2Gd plate after unidirectional rollingPengfei Zhang1,Yunchang Xin1,2,Ling Zhang1,Shiwei Pan3,Qing Liu1,21. International Joint Laboratory... mechanical anisotropy of such a cross-rolled plate after an unidirectional rolling and subsequent annealing were systematically investigated.The results show that the circle-shaped texture is partially......
J. Cent. South Univ. Technol. (2011) 18: 580-586 DOI: 10.1007/s11771-011-0734-2 Effects of bending on heat transfer performance of axial micro-grooved heat pipe JIANG Le-lun(蒋乐伦), TANG Yong(汤勇... fabricated and tested from the bending angle, the bending position and the bending radius. The results show that temperature difference and thermal resistance increase while the heat transfer capacity......
Effect of frictions on cross section quality of thin-walled tube NC bending YANG He(杨 合), GU Rui-jie(谷瑞杰), ZHAN Mei(詹 梅), LI Heng(李 恒) College of Materials Science and Engineering, Northwest... numerical controlled(NC) bending was studied by numerical simulation method, combined with theoretical analysis and experiment. The results show that the frictions between mandrel, wiper, pressure die......
中图分类号:TG146.22 文献标识码:A Microstructures and bending properties of Al composites with high volume fraction of SiCp WANG Qing-ping1,2, WU Yu-cheng1, HONG Yu1, PAN Rong-jun1... morphologies of composites were observed by SEM and the components were analyzed by XRD. The effects of the particle size distribution and the components of aluminum matrix on the bending strength......
) binder was developed. In the testing procedure, the SuperpaveTM Bending Beam Rheometer (BBR) with special modifications and binder blending charts by Asphalt Institute were utilized. Modifications... stiffness of RAP binder without binder extraction and/or any chemical treatments. Key words: aged binder; reclaimed asphalt pavement; mortar; stiffness; Bending Beam Rheometer; blending chart 1......
