chapter  8
22 Pages

Stability concepts from Renaissance to today

Today,structuralstabilityisusuallyunderstoodasthecapacityofa structuretoreturntoapreviousstateofequiiibriumafterimposed smalldisplacements.Inframedbuildings,thedisplacementslikelyto becriticalareusuallytheresultofelasticflexuraldeformationsof relativelyslenderbeamsandcolumnsandelasticshead"ngdeformationsofassociatedwalls,broughtaboutbyappliedloadssuchasthe wind.Inshellstheyaremorelikelytobedisplacementsnormaltothe surfaceandliabletocausethistobuckle.Thetermmayalso,by extension,beusedtodenotetheabilityofthestructuretoremain standingafterlocalpermanentdamage.Butitseemspreferabletouse adifferentterm-suchasstructuralrobustness-forthis.