NIAOT OpenIR  > 会议论文
A FEM coupling model for properties prediction during the curing of an epoxy adhesive for a novel assembly of radio telescope panel
Shouwei Hu; Yi Chen
2014-07-18
Source PublicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Volume9151
PagesVol. 915132-1-14
Conference Date2014-6-22
Conference PlaceMontréal, Quebec, Canada
Funding OrganizationSPIE
PublisherSPIE
Abstract
The curing of epoxy adhesives is a complex phenomenon where the thermal, the chemistry and the mechanics are coupled. Corresponding material properties such as mechanical and physics properties are evolving with the curing. This paper focuses on their predictions by a multiphisics FEM approach of the thermal, chemical and mechanical couplings involved by the curing for a novel assembly of radio telescope panel. The first part presents the constitutive model of an epoxy adhesive that is considered for the curing. The numerical solving, performed with a specific user subroutine of Ansys, is detailed and allows the study of real three-dimensional structure parts. Residual stresses and strains of different metallic membranes and internal adhesives in the interconnect during the assembly of radio telescope panel are
investigated. The mechanical response of the interconnect is analyzed with respect to the poisson’s ratio, relaxation time and adhesive thickness. It is shown that, although the overall residual stresses at the interconnect increase with the adhesive curing, the local strains have different evolving trends, indicating the possibility of damage and decohesion that might compromise mechanical integrity and interrupt the component processing precision.
KeywordMaterial Modeling Multiphysics Fem Epoxy Adhesive Cure Shrinkage Viscoelastic Effect Residual Stresses
Subject Area射电望远镜
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/790
Collection会议论文
Recommended Citation
GB/T 7714
Shouwei Hu,Yi Chen. A FEM coupling model for properties prediction during the curing of an epoxy adhesive for a novel assembly of radio telescope panel[C]:SPIE,2014:Vol. 915132-1-14.
Files in This Item: Download All
File Name/Size DocType Version Access License
A FEM coupling model(2944KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Shouwei Hu]'s Articles
[Yi Chen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Shouwei Hu]'s Articles
[Yi Chen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Shouwei Hu]'s Articles
[Yi Chen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A FEM coupling model for properties prediction during the curing of an epoxy adhesive for a novel assembly of radio telescope panel.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.