Accession Number:

ADA347686

Title:

Structural Integrity of Intelligent Materials and Structures

Descriptive Note:

Final rept. 30 Sep 94-30 Dec 97

Corporate Author:

BERKELEY APPLIED SCIENCE AND ENGINEERING INC SAN FRANCISCO CA

Personal Author(s):

Report Date:

1998-03-01

Pagination or Media Count:

186.0

Abstract:

A wide variety of applications for intelligent structure technologies exist in defense, aerospace, auto, civil and biomedical industries. Shape Memory Alloys SMA and laminated composite materials have unique properties suitable for these technologies. Extensive utilization of these materials requires accurate theories for the mechanics of these materials be developed. The present research is an effort in this direction. In this work 1 A thermomechanical constitutive model for phase transformation in SMA was proposed 2 Numerical schemes for solving the highly nonlinear finite element equations were developed 3 Geometrically nonlinear elements for SMA were introduced 4 The mechanics of composite laminates was formulated through a multi-director shell theory and was extended to finite kinematics in a corotational framework 5 Geometrically nonlinear plates and shell elements with multi-directors through the thickness were developed for composite laminates and 6 An extensive set of test problems was simulated to show the accuracy of the developed theories.

Subject Categories:

  • Laminates and Composite Materials
  • Computer Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE