Towards Intelligent Structures: Active Control of Buckling

Item

Title: en_US Towards Intelligent Structures: Active Control of Buckling
Creator: en_US Berlin, Andrew A.
Date: 2004-10-20T14:45:04Z
Date Available: 2004-10-20T14:45:04Z
Date Issued: en_US 1994-05-01
Identifier: en_US AITR-1590
uri: http://hdl.handle.net/1721.1/6768
Abstract: en_US The buckling of compressively-loaded members is one of the most important factors limiting the overall strength and stability of a structure. I have developed novel techniques for using active control to wiggle a structural element in such a way that buckling is prevented. I present the results of analysis, simulation, and experimentation to show that buckling can be prevented through computer-controlled adjustment of dynamical behavior.sI have constructed a small-scale railroad-style truss bridge that contains compressive members that actively resist buckling through the use of piezo-electric actuators. I have also constructed a prototype actively controlled column in which the control forces are applied by tendons, as well as a composite steel column that incorporates piezo-ceramic actuators that are used to counteract buckling. Active control of buckling allows this composite column to support 5.6 times more load than would otherwise be possible.sThese techniques promise to lead to intelligent physical structures that are both stronger and lighter than would otherwise be possible.
Extent: en_US 101 p.; 15938512 bytes; 3402649 bytes
Format: application/postscript; application/pdf
Language: en_US
Relation: en_US AITR-1590
Subject: en_US AI; en_US MIT; en_US Artificial Intelligence; en_US Intelligent sStructures

Item sets: AI Technical Reports (1964 - 2004)