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| | A new method of computing accurately Blanking Layout element step is put forward in this Paper.Compared with the moving step method, the Computing time by using the new method is greatly cut down. Thus,the optimization of stamping arrangment is well improved. | | 本文提出了精确计算排样单元步长的新方法,与移步法相比,新方法具有大幅度缩短排样单元步长的计算时间的优点,从而进一步完善了冲裁零件的排样优化。 | | 文摘来源 | | Based on the loop impedance method for load flow algorithm and the characteristics of connection in distribution network, a relevant matrix describing the flow direction of branch current and nodes distribution is established, and a method to form impedance matrix and a simple but fast node and branche numbering scheme are proposed. On the basis of the above, a new method of load flow algorithm for distribution network is presented. The method has the advantages of programming simply, converging fast and ... | | 依据配电网潮流计算的回路阻抗法 ,结合配电网结线的特点 ,定义了反映支路电流流向与节点分布规律的关联矩阵 ,提出了形成阻抗矩阵和简单快速的节点、支路的编号方法 ;在此基础上 ,提出了一种配电网潮流计算的新方法。新算法具有编程简单易于实现 ,收敛速度快 ,计算精度高的特点 | | 文摘来源 | | The motion equation for seismic response of soil-structure-tuned liquid damper(TLD) interaction system is established in time domain.Taking 12-storey and 24-storey shear steel buildings as examples,the seismic responses of the buildings set on deep soil layer are calculated under the conditions with and without TLD controls.In analysis,several cases including five different shear wave velocities of soil medium and three input seismic waves are considered.The effects of soil-structure interaction on the TLD ... | | 在时域内建立了土 -结构 -调谐液体阻尼器 (TLD)相互作用体系地震反应的运动方程 ,以 12层和 2 4层两种钢结构为例 ,计算了深覆盖土层上钢结构在无控和受控条件下的地震反应 ,通过 5种土层波速和 3条不同输入地震波的多种工况的数值分析和比较 ,讨论了土 -结构相互作用对钢结构TLD减震控制效能的影响及其规律性 .计算结果表明 :一般情况下 ,土 -结构相互作用对结构地震反应的影响要强于TLD的减震影响 ,因此 ,科学而准确地分析土 -结构相互作用体系的地震反应 ,是确定设置TLD的必要性和合理性的首要前提条件 . | | 文摘来源 | |   |
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