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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Estimates for elliptic systems in a narrow region arising from composite materials


Authors: Hongjie Ju, Haigang Li and Longjuan Xu
Journal: Quart. Appl. Math. 77 (2019), 177-199
MSC (2010): Primary 35B65, 74B05, 35J47, 35Q74
DOI: https://doi.org/10.1090/qam/1518
Published electronically: September 5, 2018
MathSciNet review: 3897923
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Abstract | References | Similar Articles | Additional Information

Abstract: In this paper, we establish the pointwise upper and lower bounds of the gradients of solutions to a class of elliptic systems, including linear systems of elasticity, in a general narrow region and in all dimensions. This problem arises from the study of damage analysis of high-contrast composite materials. Our results show that the damage may initiate from the narrowest place.


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Additional Information

Hongjie Ju
Affiliation: School of Sciences, Beijing University of Posts and Telecommunications, Beijing 100876, People’s Republic of China
Email: hjju@bupt.edu.cn

Haigang Li
Affiliation: School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing 100875, People’s Republic of China
MR Author ID: 928017
Email: hgli@bnu.edu.cn

Longjuan Xu
Affiliation: School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing 100875, People’s Republic of China
MR Author ID: 1225839
Email: ljxu@mail.bnu.edu.cn

Received by editor(s): August 9, 2017
Received by editor(s) in revised form: July 3, 2018
Published electronically: September 5, 2018
Additional Notes: The first author was partially supported by NSFC (11301034) (11471050).
The second author was partially supported by NSFC (11571042) (11371060) (11631002), Fok Ying Tung Education Foundation (151003). Corresponding author.
Article copyright: © Copyright 2018 Brown University