Response of Pultruded Glass Composite Box Beams Under Bending and Shear

Authors

Daniel D. Estep
Hota V.S. GangaRao
David Dittenber, Cedarville UniversityFollow
Muhammad AsifQureshi

Document Type

Article

Publication Date

3-1-2016

Journal Title

Composites Part B: Engineering

ISSN

1359-8368

Volume

88

Issue

1

First Page

150

Last Page

161

DOI

https://doi.org/10.1016/j.compositesb.2015.11.008

Abstract

Existing failure load prediction models for pultruded Fiber Reinforced Polymer (FRP) box beams are inaccurate when compared to experimental evaluations provided herein by the authors. This inaccuracy is attributed to improper identification of failure modes based on beam span-to-depth ratios and principal strain resulting in premature failure compared to elastic bending stress-based failures. Inclusion of stress intensity factors and computation of stress concentrations aids in consistently accurate results compared with experimental data. The proposed equations are predicting critical flexural load capacities within ±22% of experimental data for all cases. The failure model in tension is the most accurate one, while local buckling predictions in compression need further refinement.

Keywords

Fiber-reinforced polymer (FRP), A. Glass fibres, D. Mechanical testing, E. Pultrusion, B. Stress concentrations

Recommended Citation

Estep, Daniel D.; GangaRao, Hota V.S.; Dittenber, David; and AsifQureshi, Muhammad, "Response of Pultruded Glass Composite Box Beams Under Bending and Shear" (2016). Engineering and Computer Science Faculty Publications. 421.
https://digitalcommons.cedarville.edu/engineering_and_computer_science_publications/421