Source google image: https://www.researchgate.net/profile/Sina_Safari3/publication/317075166/figure/fig17/AS:669989212262417@1536749284855/Effect-of-pinching-on-inelastic-displacement-ratio-for-fixed-and-isolated-structures-with.png
Isolation 3 r
Source google image: https://www.researchgate.net/profile/Sina_Safari3/publication/317075166/figure/fig17/AS:669989212262417@1536749284855/Effect-of-pinching-on-inelastic-displacement-ratio-for-fixed-and-isolated-structures-with.png