关键词: 振动, 欧拉公式, 边界条件, 半波损失

Abstract:

In this paper, the half-wave loss of reflection of mechanical wave was proved using Euler's formula, under the nonisolated and non-slip boundary conditions. It takes the relationship between vibration and fluctuations as a starting point. The phases of incident waves and reflected waves were also calculated when taking "fixed -end" and "free -end" boundary conditions,respectively.