论文部分内容阅读
力的作用效果有两种,一是力能改变物体的运动状态,二是力能使物体发生形变.为了描述压力的作用效果,人们引入了压强的概念.关于压强的引入压力是指垂直作用在物体表面上的力.当压力的作用效果是使物体发生形变时,压力的作用效果跟压力大小和受力面积有关.压力越大,受力面积越小,物体的形变就越大,我们就说压力的作用效果越明显.综合上述两个因素,我们会想到单位面积上的压力这个概念,这就是“压强”.事实上,影响压力对物体形变的作用效果就是压强,我们用“压强”来表示压力的作用效果.
The effect of force has two kinds, one is force can change the state of motion of the object, the other is that the force can make the object deform .In order to describe the effect of the pressure, people introduced the concept of pressure. The pressure of the introduction of pressure refers to the vertical action The force on the surface of the object.When the effect of the pressure is to deform the object, the effect of the pressure is related to the size of the pressure and the area affected by the stress.When the pressure is greater and the area of the force is smaller, the deformation of the object is larger. We can think of the concept of pressure per unit area, which is “pressure ” In fact, the effect of pressure on the deformation of the object is the effect of pressure, we use “Pressure ” to indicate the effect of pressure.