【摘要】 冲压筋改变了板的固有频率和振型 ,从而能显著改变其振动和噪声特性 .用遗传算法来优化平板冲压筋尺寸 ,以最大程度地减小总的噪声辐射功率 .考虑了宽带激励下的声响应 ,辐射声功率用有限元法和边界元法得到更多还原

【Abstract】 The effect of rib stiffening causes the redistribution of natural frequencies and mode shapes of the plate,so as to alter its noise and vibration character. Genetic algorithm is used as a tool for sound radiation minimization problems for determining the optimal dimensions of the stamped rib in a plate. Acoustic response under broad-band excitation is considered. Radiated sound power is calculated using a boundary element method, in conjunction with a finite element solver.更多还原