Table 1 Chain instability inertias of different topological structures.
Patterns | Topological structures | Number of chambers | Instability inertia | ||
|---|---|---|---|---|---|
Total | Important chamber | General chamber | |||
Individual chamber | I | 1 | — | — | — |
Two-chamber group | II | 2 | 2 | 0 | 1 |
III | 2 | 0 | 2 | 0 | |
Three-chamber group | IV | 3 | 3 | 0 | 1 |
V | 3 | 1 | 2 | 0.33 | |
VI | 3 | 0 | 3 | 0 | |
Four-chamber group | VII | 4 | 4 | 0 | 1 |
VIII | 4 | 2 | 2 | 0.50 | |
IX | 4 | 1 | 3 | 0.25 | |
X | 4 | 0 | 4 | 0 | |
… | …… | ||||
n-chamber group | \(\frac{n(n - 1)}{2}\) | n | n | 0 | 1 |
…… | |||||
\(\frac{n(n - 1)}{2} + {\text{i}}\) | n | m | n-m | m/n | |
…… | |||||
\(\frac{n(n + 1)}{2}\) | n | 0 | n | 0 | |
