The Relationship between the Average Shear Angle in Vibration Cutting and the Shear Angle in Conventional Cutting 带材多刀圆盘剪纵剪切振动切削平均剪切角和普通切削剪切角的关系
The static yield shear angle may be a fixed value as 20.6 degree. 静态剪切屈服角基本上是一个20.6度的定值。
New Methods on the Determination of Martensitic Transformation Shear Angle and Lattice Parameters; 马氏体相变切变角和点阵常数测定的新方法◆剪切角可调,减少板料扭曲变形。
A series of experiments on conjugate shear angles have been systematically carried out with clay models. The data and curves obtained are given in the paper to show the effects of material property. limit stress and time on conjugate shear angle. 笔者采用粘土材料,对共轭剪切角进行了系统的实验分析,得到了一系列实验数据与实验曲线,以反映物性、极限应力及时间对共轭剪切角的影响。
At first, according to the characteristic of HSM, orthogonal cutting model is established, and formation mechanism of cutting zone, forces that chip suffered, friction characteristic of cutter/ workpiece area, and shear angle are analyzed. 首先根据高速切削的特点,建立正交切削模型,分析金属切削层变形机理、切屑受力情况、刀具/工件切削区的摩擦特点以及有关剪切角的计算方法。
A study on a new model of shear angle 剪切角新模型的研究
Based on new prediction theory and measurement technology of chip flow angle, this paper supposes the chip flow angle is known and proposes a shear angle equation about oblique cutting directly. Moreover, theoretic solution about the equation is researched in this paper. 本文在流屑角预报理论和测量技术的基础上,假定流屑角已知,直接推导出斜角切削剪切角方程,并对该方程的理论解进行了研究。
According to the minimum energy principle, the important parametr& shear angle in cutting process is calculated theoretically. 对切削过程中刀具刃口处消耗的能量进行了理论分析与公式推导,并根据最小能量原理对重要参数&剪切角进行了理论计算。
The influence of elastic anisotropy of material on the shear angle is studyed systematically in this paper. The fluctuation law of the cutting force and the shear angle with the changes of cutting crystal plane and cutting orientation is given by calculating theoretically. 本文系统研究了材料的弹性各向异性对剪切角的影响,并在理论上计算出了剪切角随加工晶面、加工方位的波动规律。
Method of γ( fcc)→ε( hcp) Martensitic Transformation Shear Angle Determination by Atomic Force Microscope γ(fcc)→ε(hcp)马氏体相变切变角的原子力显微镜测定方法
According to the model, a simple formula is developed, with that the two dimensional shear angle can be calculated. 根据此模型,导出了二元切削时求解剪切角φ的简化公式。
Simulated the process of the orthodoxy cutting ( through the cutting tool against the work contacts up to the shear angle taking shape) precisely and vividly through the technology of digital simulation which based on the large software ANSYS. 基于大型有限元软件ANSYS平台,通过数值仿真技术,将直角切削过程(从刀具与工件接触到剪切角形成)精确而生动地模拟出来。
In this paper, we introduce a new parameter, the shear angle of vector magnetic fields, △ψ, which is denned as the angle between the observed and potential vector magnetic field, to describe the non-potentiality of active regions. 本文提出了描述太阳活动区磁场非势特征的一个新的参数&矢量磁场的剪切角ΔΨ。我们定义ΔΨ是观测的矢量磁场与其相应的无电流磁场的夹角。
Based on the minimum energy solution of shear angle, the cutting forces in orthogonal machining are predicted theoretically in this paper. 基于剪切角的最小能量解,对正交切削时的切削力进行了理论预报。
Thompson tetrahedron and geometry analysis were used to calculate the directions of variant traces on specimen surface, then the relationship between the transformation shear angle and surface relief angle was deduced. 运用Thompson四面体和几何模型推导出马氏体变体的迹线方向,通过计算求得相变浮凸角与真实切变角的对应关系。
Study of a New Prediction Method of Shear Angle 一种新的剪切角预报方法的研究
Shear Angle of Vector Magnetic Field 矢量磁场的剪切角
Discussion on the shear angle of conjugate fractures 关于共轭断裂剪切角的讨论
Shear Angle research is one of the basic problems in metal cutting theory. 剪切角的研究是金属切削理论中的一个基本问题。
A theoretic model of shear angle of KDP ultra-precision machining is built with the principle of the maximum specific energy of shear deformation and the mechanism of change of the shear modulus with different crystal planes and orientations. 其次根据剪切变形比能最大及单晶材料不同晶面晶向剪切弹性模量不同的原则,结合超精密切削模型,建立KDP晶体超精密切削各向异性的剪切角理论计算模型;
The critical shear angle of quasi-static state was given under different loading speeds and frame lengths condition, and the influence of specimen size on this shear angle range is also discussed. 得出了在不同拉伸速度和边框长度条件下装置处于准静态时的临界剪切角,并且分析了织物试样尺寸大小对准静态范围的影响。
Studies show that pinching could obviously be observed in the horizontal shear versus shear angle hysteresis loops, which exhibited reverse-S shape. 研究表明:核心区水平剪力-剪切角滞回曲线呈反S形,有一定的捏拢效应;
In addition, the shear angle models which previously received have been arranged, facilitate the future study of the shear angle model. 此外,文中还对以往得到的剪切角模型进行了梳理,便于今后对剪切角模型进行研究。
As a result of high frequency vibration, the chips are easier to break up, and the cutting shear angle increases, which lead to cutting force decrease. The cutting tool surface contacts periodically with chip, which lead cutting temperature to decrease. 工件在超声波激励作用下高频振动,切屑容易断裂,切削剪切角的增大降低了切削力,工件与刀具的周期性分离降低了切削温度。
The relevance of the Shear angle y and shearing stiffness measured by KES was discussed by comparative experiments in standard temperature and humidity. ( 4) Bending and shearing properties of fabrics were studied in the extremely cold environment. 通过标准温湿度下的对比实验,讨论了定负荷下测得的剪切角γ与KES测得的剪切刚度G的相关性,并作评价(4)低温下织物的弯曲和剪切性能测试研究。
The mechanisms of semi-periodic variation of chip thickness were discussed, and combining with shear angle changing and dynamic behaviour of microcracks, models of chip forming process were established for SiC_p/ Al composites with different reinforcement volume fraction. 2. 探讨了切屑厚度准周期变化的内在机制,将剪切角周期变化和微裂纹的动态影响相结合,建立了适应含不同颗粒体分比的该材料的切屑形成过程模型。
Shear angle increases with the increase in cutting speed. 切削过程中,剪切角随切削速度的增加而增大。