Accession Number : ADA330636

Title :   Analysis, Design, and Computation of Active Materials.

Descriptive Note : Final rept. 1 Apr-30 Sep 96,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS OFFICE OF RESEARCH AND TECHNOLOGY TRANSFER ADMINISTRATION

Personal Author(s) : James, Richard ; Luskin, Mitchell

PDF Url : ADA330636

Report Date : 13 MAR 1997

Pagination or Media Count : 5

Abstract : The research reported here concerns the mathematical modeling and numerical simulation of the behavior of active materials, especially shape memory and magnetostrictive materials. New theories for thin films of active material were derived using change-of-scale calculations. These were used as the basis of several new design concepts for microactuators. Work continued on the modeling of a new class of active materials, magneto-memory materials, whose existence was predicted under previous AFOSR support. Guided by a new theory of magnetostriction, a search has led to the first of these materials during the past year. This material currently exhibits the largest magnetostrictive effect known. New numerical methods were developed and analyzed for the computation of materials with microstructure. These methods were used to compute the complex microstructure that is observed when a laminate of two phases meets a homogeneous phase.

Descriptors :   *MAGNETOSTRICTION, *SHAPE MEMORY ALLOYS, MATHEMATICAL MODELS, MICROSTRUCTURE, MATERIALS, LAMINATES, THIN FILMS, DIGITAL SIMULATION.

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE