WTC System Collapse - A CAS Stability Engineering View

Stability Engineering – Volume 9 www.manhattanproject20.com 1 117-251-D WTC System Collapse – A CAS Stability-Engineering View Dynamic Membership, Implicit Coupling, Perturbation History, and Residual Margin Preface — What This Chapter Is, and Is Not The World Trade Center disaster is normally investigated as a sequence of structural failures: aircraft impacts damaged WTC 1 and WTC 2; impact damage, lost fire protection, and fires eventually led to the collapse of both towers; debris from WTC 1 ignited fires in…