backward slip zone

Research about the backward slip of the steel-ball in longitudinal rolling process;

钢球纵轧成形后滑的研究

Taking the workpiece period as a basic deformation unit, the author investigated in this paper the period relationship without consideration of the backward slip in bite zone, and discussed a principle of the phase adjusting.

基于金属塑性变形原理,以钢球坯为研究对象,建立了周期断面纵轧的连轧数学模型;以周节为基本变形单元体,研究了咬入区不产生后滑的轧件周节关系及相位调节原理。

The deformation process of H-beam was modeled by the explicit dynamic finite element method with different rolling parameters to make sure how and why the backward slip formed during H-beam rolling.

利用显式动力学有限元方法模拟了不同轧制参数条件下H型钢的变形过程,得出了一些主要参数对H型钢后滑的影响规律,并对这些规律产生的原因进行了分析·研究结果表明:压下率对H型钢后滑的影响非常明显,随压下率的增加,后滑急剧地增加·此外,轧件的腿宽、腿腰延伸比、内宽以及轧件的初始厚度对H型钢的后滑也有较明显的影响

Simulation results and comparison with the effect of PI control show that the tension robust controller designed has better disturbance attenuation performance for uncertainty such as front-back skidding, external disturbance, etc.

仿真研究结果及与常规PI控制效果的比较表明,所设计的张力鲁棒控制器对前后滑和外界干扰等不确定性具有更好的抑制作用,从而证明了所设计控制器的有效性。

This paper discusses the phonetic nature of diminuendo opening diphthong,and the kinds of their off-glides.

二合元音中前强后响元音具有渐强与渐开的语音性质,它的后滑音分为有音位价值与无音位价值两类,在广西武鸣壮语与浙江庆元、松阳话中,其音位处理上要将这种后滑音以上标的方式标出。