层级划分,弹性势能最小划分法以及相关概念的定义
此处输入要素的个数：
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解释结构模型弹性势能最小的层级划分法
第一、箭头朝向一致！本处是箭头朝上！回路的在同一级！
第二、层级数最少！
第三、活动要素尽量从两端往中间靠近。
其中第三点为这种方式特有，从物理角度来观察，可以弹性势能最小！
显示的是一个随机 22 * 22 的方阵
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求出新序法的缩减矩阵！！！
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辰 | 戊 | 子 | 丑 | 寅 | 卯 | 甲 | 乙＋己＋庚＋壬 | 巳 | 午＋未＋酉＋戌 | 丁 | 申 | 亥 | 丙 | 辛 | 癸 |
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此处必须要是一个有向无回路图，下面的处理结果，也不完全全部是能量最小，谁对这个算法敢兴趣，请联系作者
弹性势能最小：
| |
辰 |
卯 |
癸 |
戊 |
乙＋己＋庚＋壬 |
子 |
午＋未＋酉＋戌 |
丁 |
巳 |
丑 |
甲 |
亥 |
申 |
丙 |
辛 |
寅 |
| 辰 | |
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解释结构模型
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