Dynamic Response of Thin Shells to Suddenly Applied Loads.
Abstract
Aerospace structures are increasingly being exposed to dynamic environments in which loads are applied with very short rise times, or with high intensity over short duration. Characteristic times range from 10 to the minus 6th power seconds typical for HE down to 10 to the minus 9th power seconds or less for laser and other electromagnetic radiation. Thin-walled structures can buckle dynamically under such impulsive loading; generation of stress waves in thicker structures causes damage by cracking, debonding, delamination or spallation. The long-range objective of the research is to study these mechanical and thermomechanical effects with two optimization problems in mind: (a) the 'defensive' problem of determining the optimum structural design to minimize damage under a given class of loading; (b) the 'offensive' problem of optimizing the load to cause maximum damage, or critical damage at a minimum cost, to a given class of structures. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0741895
Entities
People
- W. Nachbar
- W. Prager
Organizations
- University of California, San Diego