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在西工大的机械设计第七版319页,讲到球轴承的配置问题,7 O: z9 W# |4 ?6 \# E+ e
其中有处地方不是很明白:/ i+ x, [5 m. J
针对如何提高结构支撑刚性的问题,文中提到“压力中心“的概念, 在网络上搜索到维基百科关于它在空气力学方面的解释,; ^6 ~9 Z0 y8 O6 x: v7 l N; \
The center of pressure is the point on a body where the total sum of the aerodynamic pressure field acts, causing a force and no moment about that point. Mathematically it can be said that the net pressure force on the body acts through this point. The net force applied at the center of pressure point produces the equivalent moment as the pressure field about any arbitrary point. Typically the center of pressure is referenced to the nose of the vehicle but other points may be selected.
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/ m8 ~/ B% d4 Y- e但上述解释似乎和轴承毫无关联,请问轴承中对压力中心是怎样定义的?
1 k$ u7 U0 b- Q2 \4 b个人理解是,若轴承不受来自齿轮的径向载荷,其轴向压力沿轴承接触角产生的分力汇集点即是所谓的--压力中心. 但目前的问题就是,从下图结构看轴承肯定要承受来自齿轮的径向力. 那么,请问压力中心怎样定义的? 似乎不会汇集在一点...% E# I1 t7 x$ C9 v4 v) D. R/ u
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