基于光滑粒子流体动力学( SPH)方法对无阻尼板和装有阻尼板的矩形储箱在加速度激励作用下,储箱内液体的晃动与冲击进行了三维数值模拟,将测试点的计算压力及液体晃动模拟与试验进行了对比,吻合较好.从而验证了SPH方法在求解具有强非线性液体大幅晃动问题方面的准确性和优越性.分析表明:阻尼板的安装对液体的晃动特性具有显著的影响.推导了液体晃动重心的计算表达式,基于iSIGHT优化平台,通过拉丁方试验设计方法设计出样本点,构造出液体晃动的二次响应面模型,采用序列二次规划方法对防晃挡板的安装位置及尺寸进行优化,在保证液体晃动重心满足约束条件的基础上,防晃板的重量最轻.%SPH executes 3-D value simulation with liquid sloshing and impact in containers for rectangular containers both with and without baffles when they are under acceleration stimulation. Comparison results show the testing point calculated pressure and liquid sloshing simulation agrees with experiments so that SPH is proven to be more accurate and superior at solving strong non-linear liquid severe sloshing problem. Analysis show that the installation of baffles has significant influence over the liquid sloshing feature. The calculation formula for the center of gravity of liquid is deduced. Based on iSIGHT optimized platform,sample points are designed with Latin designing method,and the liquid sloshing second response surface models are built up. Sequential quadratic programming is applied to optimize the installation position and size of tank baffles to keep its weight as light as possible while ensuring constraining conditions for liquid sloshing center of gravity.
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