英德
有道
百度
谷歌
图片
维基
百科
等效状态 [děng xiào zhuàng tài]
equivalent state
- 是否具有并可随时得到识别文件修改状态的控制清单(或等效文件)?
3 Is there a master list (or equivalent) identifying document revision status readily available? - 文摘:详细分析了倾斜地表下岩体的应力状态，通过分解叠加的等效原则解出一般条件下围岩的二次应力解析解，并探讨该应力场的特性.结合黄土岭隧道工程，将解析值与实测数据进行对比分析，理论分析与实测结果符合良好.
Abstract: This paper analyzes the stress of rock in the slope ground.Considering the circlar tunnel as a little hole in the infinite elastic plate, the authors have derived an analytic solution of the secondary stress in the surrounding rock by the equivalentmethod of disintegration and superposition.In the work of Huangtuling tunnel of Yong-Tai-Wen highway, the authorscompare the analytic solution with the in field data available and find them to be in good agreement. - 本文提出了一种改进的PEEC模型，为便于在大规模互连封装结构分析中利用规模缩减技术，它以描述系统的状态方程代替了具体的等效电路.为此它以矢量磁位的积分表达式和洛仑兹规范代替了矢量磁位和标量电位的积分表达式，对积分方程进行展开.这样做可以避免复杂介质结构中的电容矩阵提取，大大节省了计算时间.这一模型可方便地嵌入更大的系统进行分层次的综合分析和利用PVL等规模缩减技术.数值计算的结果与其他文献吻合较好，表明该方法有较高的可靠性.
A modified PEEC model is introduced in this paper.For the convenience of utilization the reduction technology in large scale interconnect and packaging electric analysis,this model present the state equations instead of the equivalent circuit.To do that,the integral definition of vector magnetic potential and the Lorentz gauge is used to expand the integral equation of the PEEC model.This avoids the using of the integral definition of the scalar electric potential and consequently avoids the capacitance matrix extraction in complex dielectric structures,which can save a large part of computing time.This model is suitable for hierarchical electromagnetic modeling and reduction technology like PVL.The numerical results show the validity of the presented model.
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