中文摘要：

用扬声器振膜在某个驱动频率下的线性振型对连续体进行了离散,得到了1个自由度的非线性振动方程,给出了由积分表示的方程中系数的计算表达式.通过求解非线性方程得到了谐波失真与非线性系数的关系.然后通过数值计算探讨了锥体的几何参数对非线性系数的影响.计算结果表明：选择合适的几何参数,可以使谐波失真得到一定程度的减小.

英文摘要：

The nonlinear vibration equation for loudspeaker shell was obtained by using its linear displacement patterns.The coefficients of the nonlinear equation were given in integral form.The relation between the har-monic distortion and nonlinear coefficients was presented.The effects of the geometrical parameters on harmon-ic distortion were discussed.The results showed that nonlinear harmonic distortion could be decreased by choosing proper loudspeaker diaphragm geometry.