用Qbasic编程描绘弹簧振子在定常摩擦阻力作用下的振动图像  

Using Qbasic Program to Draw the Graphs of the Oscillation of the Spring Oscillator under Constant Friction Resistance

作　　者：卓士创[1] 李顺才[2] 

机构地区：[1]徐州师范大学工学院,江苏徐州221011 [2]中国矿业大学理学院,江苏徐州221008

出　　处：《菏泽师专学报》2002年第2期12-14,共3页

摘　　要：首先给出了弹簧振子在定常摩擦阻力作用下的振动微分方程ｘ＋ｗ＾ｘ＝±φ，并通过分段求解，归纳出其在各个阶段的解的一般形式，然后根据振幅衰减规律及振动能够维持的半周期数，用Ｑｂａｓｉｃ编程，作出了振动的图象．At first, x + w2x = + o , the differential equations of the oscillation of spring oscillator under constant friction resistance are given, and the general form of the solution for each stage is induced after being solved stage by stage. Then, according to the regularity of amplitude attenuation and the number of semi-periods of oscillation, the programs are written, and the graphs of oscillation are drawn by Qbasic.

关 键 词：弹簧振子 定常摩擦阻力 振动微分方程 QBASIC编程 振动图象 振幅衰减量 半周期数 

分 类 号：O326[理学—一般力学与力学基础]