【摘要】 本文以冲击问题为例,用能量法对基本静定梁的相当质量作了分析。求得冲击点在梁的任意位置时的相当质量的值,并且用图示的方式表示出来。其结果不但适用于冲击问题,而且也适用于机械振动问题。更多还原

【Abstract】 Taking impact as an example this paper has analysed nominal mass of deter- minate beams by the energy method.The values of nominal mass have been given when the impacted point is at different positions of the beams.These values are shown in figures.The results are useful not only to solving the impact problems but also to solving some mechani- cal vibration problems.更多还原