1) static friction
静摩擦力
1.
Judging the direction of the static friction of rigid body in motion needs only the presupposition that the rigid is not influenced by the static friction,and then the reverse direction of the acceleration of the touch point on the rigid body opposite the contact surface is the direction of the static friction.
判断作纯滚动的刚体所受静摩擦力的方向,只要假设此刻刚体不受到静摩擦力的作用,那么刚体上的触点相对于接触面运动的加速度的反方向,即为静摩擦力的方向。
2.
This paper illustrates that the friction exerted on a rolling object without slipping is static friction.
通过一个演示实验 ,分析论证了纯滚动刚体所受摩擦力为静摩擦力 ,静摩擦力与物体的运动状态有关 ,与接触面性质无关 。
3.
The thesis discusses the magnitude and direction of static friction in defferent conditions,and mainly discusses the static friction of the object in rotation on the horizontal rotating table.
讨论了各种情况下静摩擦力的方向和大小 ,着重讨论了水平转台上物体所受台面的静摩擦力 ,指出静摩擦力的大小和方向都应根据具体情况视之 。
2) static friction force
静摩擦力
1.
A simplified potential model of contact surfaces,which is based on the strong volume-dependent characteristic of metal,is established to calculate the static friction force and the coefficient of two flat surfaces made of the same metal and to explain the origin of static friction force.
为从理论上直接计算光滑接触平面的静摩擦力和静摩擦系数,从微观上探讨了同种金属材料摩擦副静摩擦力产生的机制,利用金属晶体的强体积效应特征构造出简化计算静摩擦力的接触界面势能模型,根据通用粘附能量函数计算接触界面势能的变化,利用能量原理计算出静摩擦力和静摩擦系数,并建立静摩擦力与固体表面能、材料微观结构参数等的关系。
2.
From the common mechanical phenomenon,present a theoretical method on how to judge the direction of static friction force.
本文以常见的力学现象为例,从理论上阐述判断静摩擦力方向的方法及作功问题的证明方法。
3.
It is one of the difficult points of physics teaching to ask the static friction force of solving.
为解决静摩擦力难以判断的问题,提出了概念判断法、加速度判断法、综合分析法等方法。
3) static frictional force
静摩擦力
1.
A discussion is made of the work done by static frictional force and the conservation of mechanical energy in the work doing process by way of typical cases.
本文就静摩擦力做功以及在静摩擦力做功过程中机械能守恒问题,结合实例做进一步讨论。
2.
This paper discusses the problems about static frictional force in physics teaching in the course of poly-technical education.
对职业教育过程中5年高职物理教学静摩擦力问题的讨论,是从教和学存在的问题进行的分析,旨在弄清概念,掌握知识,从而使学生学会应用。
5) static frictional resistance
静摩擦力
1.
Experimental study on static frictional resistance between preadjusted brackets and archwires in artificial saliva;
人工唾液中直丝弓托槽与弓丝静摩擦力的实验研究
2.
The static frictional resistances were measured on Instron Universal testing machine with the same load cell.
025英寸)弓丝结合,测试干燥状态下的静摩擦力。
6) static friction torque
静摩擦力矩
1.
A brushless DC torque motor without static friction torque;
无静摩擦力矩的无刷直流力矩电机
2.
The paper present a kind of brushless DC torque motor with coreless armature, which haven t static friction torque, inferred method of calculating current, torque, EMF, and etc.
提出了一种电枢上无铁心的无刷直流力矩电机 ,该电机无静摩擦力矩。
补充资料：摩擦学:滚动摩擦
滚动摩擦
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图
)。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得
式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图
)。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得 式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条