Adhesive joint and composites modeling in SIERRA.

Ohashi, Yuki ; Brown, Arthur A. ; Hammerand, Daniel Carl ; Adolf, Douglas Brian ; Chambers, Robert S. ; Foulk, James W., III

Sandia National Laboratories

关键词: Polymers-Mechanical Properties.;    Adhesives;    Pressurization;    Adhesive Joints.;    Fibers;   

DOI  :  10.2172/876364
RP-ID  :  SAND2005-6567
RP-ID  :  AC04-94AL85000
RP-ID  :  876364

美国|英语

来源: UNT Digital Library

【 摘 要 】

Polymers and fiber-reinforced polymer matrix composites play an important role in many Defense Program applications. Recently an advanced nonlinear viscoelastic model for polymers has been developed and incorporated into ADAGIO, Sandia's SIERRA-based quasi-static analysis code. Standard linear elastic shell and continuum models for fiber-reinforced polymer-matrix composites have also been added to ADAGIO. This report details the use of these models for advanced adhesive joint and composites simulations carried out as part of an Advanced Simulation and Computing Advanced Deployment (ASC AD) project. More specifically, the thermo-mechanical response of an adhesive joint when loaded during repeated thermal cycling is simulated, the response of some composite rings under internal pressurization is calculated, and the performance of a composite container subjected to internal pressurization, thermal loading, and distributed mechanical loading is determined. Finally, general comparisons between the continuum and shell element approaches for modeling composites using ADAGIO are given.