英语翻译Essential contact parameters control the shape and size,

英语翻译
Essential contact parameters control the shape and size,and hence the accuracy,of the contact pressure at all contacting surfaces.
These parameters include the separation tolerance (ε),number (N) and width (δ) of contact patches in the rolling element
profile direction (that is,the direction in the plane of the bearing),and number of contact patches (M) in the axial direction.ε
controls the size of the area where potential contact is searched in the deformed state.The size of the searched area increases
with ε.Correct selection of these contact parameters is crucial to balance computational efficiency against solution efficiency.
Calculated contact pressures in the contact zones between each rolling element and bearing race are used to check the correctness
of the contact parameters.The shape of the contact pressure is expected to be parabolic in the profile direction.The shape of
the contact pressure in the axial direction depends on the loading conditions.For instance,if a cylindrical bearing has tilting
motion,the contact pressure in the axial direction is similar to a triangle.With radially applied load,a nearly rectangular contact
pressure is expected in the axial direction.Examples of correct contact pressure of a radially loaded cylinder of a cylindrical bearing
with full crowning and ball of a radial ball bearing are demonstrated in Fig.3.A thorough parametric study is necessary to
determine proper choices of contact parameters.
The contact solver searches for the contact at every time step as the bearing rotates,which makes this approach capable of
solving the time-dependent rolling element contact.
This finite element/contact analysis approach [17-19] has been validated against gear experiments and analysis [20-22].The
bearing contact force variation due to internal clearances calculated by this method has been correlated with analytical model
numerical integration in [23].

必不可少的接触参数控制的形状和大小,从而准确的接触压力,在所有接触表面.
这些参数包括分离宽容（ε）,号（）和宽度（δ）接触补丁在滚动元件
剖面图的方向（即,其平面方向的轴承）,和一些接触补丁（米）在轴向方向.ε
控制面积的大小,潜在的接触搜索的变形状态.被搜查的大小面积的增加
与ε.正确选择这些接触参数是至关重要的平衡计算效率,对求解效率.
计算接触压力的接触区之间的每一个滚动元件和轴承是用来检查的正确性
的接触参数.形状的接触压力预计将抛物线剖面中的方向.形状
接触压力的轴向方向取决于负载条件.例如,如果一个圆柱轴承具有倾斜
运动,接触压力在轴向方向是类似三角形.径向载荷,近长方形接触
压力预计将在轴向方向.正确示例一接触压力加载气缸径向圆柱轴承
全冠球径向球轴承是显示在图3.一个彻底的参数研究是必要的
确定适当的选择,接触参数.
接触求解搜索接触在每个时间步长为轴承旋转,使这种方法能够
求解时间依赖的滚动接触.
这种有限元接触分析方法[17]验证了对齿轮的实验与分析[20 - 22].本
轴承的接触力变化由于内部间隙的计算方法已与分析模型
数值积分在[ 23].