Correction of the existing solutions for hole/crack problems of composite laminates under coupled stretching-bending deformation

Chia Wen Hsu, Chyanbin Hwu

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

For unsymmetric composite laminates under in-plane forces, transverse loads, out-of-plane bending and/or twisting moments, the stretching and bending deformations would be both induced and coupled together. Through Stroh-like formalism for coupled stretching-bending analysis, several analytical solutions for holes/cracks in laminates were presented in the literature. However, due to the improper use of traction-free hole boundary conditions, most of the existing solutions provide wrong solutions and their associated deflections evaluated by numerical integration of slopes have the multi-valued problem. By revising the traction-free hole boundary condition and setting the single-valued requirement for deflection, some existing solutions are corrected in this paper. The considered problems of holes/cracks in laminates include the one (1) under uniform stretching and bending moment, (2) under uniform heat flow in thickness direction, (3) for electro-elastic laminates, and (4) for Green's functions with concentrated forces and moments in three orthogonal directions. We not only provide the corrected solutions, but also derive the explicit closed-form solutions of deflection for the above mentioned problems. Additionally, with the corrected Green's functions, a special boundary element method is developed to assist the verification of corrected solutions and to show its accuracy and efficiency on the problems with holes/cracks in laminates.

原文English
文章編號113154
期刊Composite Structures
260
DOIs
出版狀態Published - 2021 三月 15

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 土木與結構工程

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