应用力学学报
應用力學學報
응용역학학보
CHINESE JOURNAL OF APPLIED MECHANICS
2009年
4期
757-761
,共5页
区间参数%响应谱分析%随机振动%有限元法
區間參數%響應譜分析%隨機振動%有限元法
구간삼수%향응보분석%수궤진동%유한원법
interval parameters%response spectrum analysis%stochastic vibration%finite element method.
为降低具有区间参数印刷电路板的动力响应,建立了PCB组件的动力学区间分析模型,采用Block-Lanczos法求解固有频率,采用模态叠加法求解加速度功率谱激励下的区间动力响应.通过区间敏感度分析比较了影响目标变量的设计参数,对关键参数的取值区间进行了优化.算例表明,该方法可以获得此类区间问题的优化近似解.
為降低具有區間參數印刷電路闆的動力響應,建立瞭PCB組件的動力學區間分析模型,採用Block-Lanczos法求解固有頻率,採用模態疊加法求解加速度功率譜激勵下的區間動力響應.通過區間敏感度分析比較瞭影響目標變量的設計參數,對關鍵參數的取值區間進行瞭優化.算例錶明,該方法可以穫得此類區間問題的優化近似解.
위강저구유구간삼수인쇄전로판적동력향응,건립료PCB조건적동역학구간분석모형,채용Block-Lanczos법구해고유빈솔,채용모태첩가법구해가속도공솔보격려하적구간동력향응.통과구간민감도분석비교료영향목표변량적설계삼수,대관건삼수적취치구간진행료우화.산례표명,해방법가이획득차류구간문제적우화근사해.
This approach was proposed to improve the dynamic characteristic of printed circuit board assembly with interval parameters. The interval analysis was carried out and the finite element model of the PCB assembly was set up. Then the response of the PCB assembly stimulated by the acceleration power-spectral-density spectrum were solved. To reduce the maximum acceleration response on PCB, the optimal interval of the key parameter was obtained. The example shows the feasibility and efficiency.
