A numerical simulation was conducted to investigate the effect of the hydraulic pressure,the punch-(diameter) and the thickness of tube on the process of hydro-piercing by finite element program DEFORM2D,and the variety trend of the punch-force,the roll-width and depth was obtained and verified through experiment.
采用DEFORM 2D有限元模拟软件研究液体压力、冲头直径以及管坯壁厚的变化对液压冲孔过程的影响,获得冲头推力、冲孔后纵向塌陷尺寸和塌陷区域面积在不同控制参数下的变化趋势,并进行工艺实验验证。
In view of the influence of servo performances on permanent magnet linear synchronous motor(PMLSM) drive with parameter variations and external force disturbance,the project of adaptive variable structure direct thrust speed control is proposed.
针对永磁直线电机参数变化和外部扰动对伺服性能的影响,提出自适应变结构直接推力速度控制设计方法。
Based on the lapse connector fracture problem of ZZ9200/25/50 chock-shield support in the underground shortly after the work began,and a variety of physical and chemical analysis were carried out for the fractured lapse connectors.
针对ZZ9200/25/50支撑掩护式液压支架在井下工作不久部分推移连接头发生断裂的问题,对断裂的推移连接头进行了各种理化分析。
The physical model established takes into account the lubricating oil film, thrust bearing, runner and thrust head.
物理模型包括润滑油膜、推力轴承和镜板推力头 。
Study on Thrust Force of Permanent Magnet Linear Synchronous Motor and Its Direct Thrust Force Control System;
永磁直线同步电机推力及其直接推力控制系统研究
Research and Implement on Direct Thrust Control System of Linear Synchronous Motor;
直线同步电机直接推力控制方法的研究与实现
Research of Direct Thrust Force Control System of Linear Motor Based on DSP;
基于DSP的直线电机直接推力控制的研究
Direct Thrust Control of Permanent Magnet Linear Synchronous Motor Based on Sliding Mode Variable Structure;
永磁直线同步电机滑模变结构直接推力控制研究
Research on Adaptive Slide Mode Variable Structure Direct Thrust Speed Control for Permanent Magnet Linear Motor
永磁直线电机自适应滑模变结构直接推力速度控制研究
direct power acting push sweep rake
直接动力作用推扫耙
The national crisis was the direct motivity of the early political modernization.
民族危机是中国早期政治现代化的直接推动力。
Research on Electrical Propeller Based on Direct Torque Control of AC Asynchronous Motor;
船舶电力推进中异步电机直接转矩控制的研究
Study of Direct Torque Control of Permanent Magnet Synchronous Motor Applied in Electric Propulsion;
电力推进中永磁同步电机直接转矩控制的研究
An Experiment on the Direct Inference Ability and Strategies of 4～6 Year-old Children;
4～6岁儿童直接推理能力及策略的实验研究
SYMBOLIC DERIVATION OF DYNAMICAL MODEL AND SIMULATION OF A DIRECT DRIVE ROBOT
直接驱动机器人动力学模型的符号推导与仿真
Formalization is necessary requirement and directive impetus for design patterns.
形式化是设计模式发展的必然要求和直接推动力。
A Direct Method to Search out the Best Thrust Plan for Sounding Rocket
寻求探空火箭最佳推力策略的一种直接优化方法
Direct Torque Control of AC Asynchronous Motor of Electrical Propeller Based on DSP;
基于DSP的电力推进交流异步电机直接转矩控制的研究
Direct torque control for electrical propulsion system of ship based on extended Kalman filter
基于扩展卡尔曼滤波的船舶电力推进系统直接转矩控制
Optimization of Finite-Thrust Spacecraft Trajectories Using Dual-Model Direct Collocation Method
有限推力航天器轨迹优化问题的一种双模型直接配置法
stress-controlled direct shear apparatus
应力控制式直接剪力仪
Four point contract center-oriented thrust Ball bearing
四点接触向心推力轴承