弹簧振子稳态受迫振动中的功能关系

Relation between the work and energy in stable forced vibration of a spring

以功能原理为基础,提出了分析弹簧振子稳态受迫振动中的功能关系的一种简洁直观的方法,其要点是先导出策动力所做的功、阻力所做的功以及合外力所做的功的一种表达式,再通过考察在不同的时间间隔内合外力所做的功的性质,来剖析系统的功能转换关系.

Based on the work-energy principle, a concise method for analyzing the relation between the work and energy in stable forced vibration of a spring is proposed. The key points are as follows. Expressions for the works done by the driving force and by the damping force are derived firstly; the properties of the total work done by the external forces are then examined; the relation between the work and energy is analyzed finally.