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1)  contact friction element
接触摩擦单元
1.
The non-thickness contact friction element is presented to simulate the mechanical behavior of contact surface between rockfill and concrete retaining wall for Guanyinyan Hydropower Station mixed dam,which makes up of a rockfill dam and a roller compacted concrete gravity dam.
将无厚度接触摩擦单元,引入观音岩混合坝接头的堆石体与混凝土挡墙之间的接触面力学行为进行模拟。
2.
The thermal field and thermal stress of concrete slab are analyzed by applying the contact friction element computation model of thermal field and thermal stress which is established by the author previously.
本文考虑面板与垫层之间的接触摩擦特性,应用笔者此前建立的温度场与温度应力的接触摩擦单元计算模型,进行了混凝土面板温度场与温度应力的仿真分析,获得了施工期及运行期面板温度场与温度应力的变化及分布规律。
2)  friction contact element
摩擦接触元
3)  thickness of the contact friction unit
有厚度接触摩擦单元
4)  contact friction
接触摩擦
1.
A study on the vibration characters and fault diagnosis of plain bearing contact friction fault with the dead load;
静载荷滑动轴承接触摩擦故障的振动特征与故障诊断
2.
The application of contact friction in bolt connection;
接触摩擦在螺栓连接中的应用
3.
Research on shrinkage stress of concrete slabs with contact friction;
考虑接触摩擦的混凝土面板干缩应力研究
5)  Friction contact
摩擦接触
1.
The contact characteristics between two bodies with sharply different stiffnesses were analyzed using a 3 D friction contact element method developed from a 2 D version to analyze nonlinear material changes.
以节点接触应力为基本未知量 ,将二维摩擦接触元推广到三维空间 ,给出了三维应力状态下的接触算法。
6)  frictional contact
摩擦接触
1.
Numerical simulation on the frictional contact problems of brake band-friction flake;
制动带-摩擦片摩擦接触的数值仿真
2.
The convergence of the non-linear frictional contact boundary problem is obtained by iteration.
模型中计入了可能滑坡面岩石材料强度的影响,并通过迭代计算的办法求解该边界非线性的摩擦接触问题。
3.
Reflection and transmission of elastic waves at a frictional contact interface between two piezoelectric media is discussed.
讨论了弹性波在压电介质摩擦接触界面上的反射和透射问题。
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。
  
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