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A Parametric Study on Composite Panel Subjected to Compression Load

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Abstract

The local buckling and buckling capacity of the stiffened panel is increased with the raising depth of stiffeners; consequently, the panel local buckling can be prevented by maintaining the optimum stiffener depth for the design and use in maximum load bearing capacity of the lightweight structures. This study deals with numerical analysis of the hat-stiffened panel under compression load with the varying parameters of hat-stiffener, three types of Ply configuration, and panel aspect ratio by using FE tool ABAQUS. Using a strain gauge data-logger system, an experimental investigation is also performed on a panel with the boundary conditions of clamped-in-loaded edges and unrestricted two unloaded edges. Load–displacement curve of the experimental results is in good agreement with FE analysis results obtained from ABAQUS for the buckling and collapse of the panel. The buckling load and deformed shapes of the composite panel are analyzed here for the design of the lightweight compressive member. A database is prepared for buckling study on the stiffened panel with varying depth and spacing of stiffeners, panel orthotropy ratio, plies configuration, and aspect ratio. Based on the studies, a few crucial factors that affect buckling behavior are found, and general guidelines are provided for hat-stiffened panels with three different ply configurations.

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Abbreviations

FE:

Finite element

L :

Panel length in the stiffener's direction

B :

Width of panel

L/B :

Aspect ratio

n :

Number of stiffeners

s :

Spacing of the stiffener

s/b :

Spacing to pitch length of stiffener ratio

D 11/D 22 :

Orthotropy ratio of the panel

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Funding

The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

  1. Department of Civil Engineering, Sitamarhi Institute of Technology, Sitamarhi, Bihar, India

    Shashi Kumar

  2. Department of Civil Engineering, Bhagalpur College of Engineering, Bhagalpur, Bihar, India

    Subodh Kumar Suman

  3. Department of Civil Engineering, Bharat Heavy Electricals Limited, Barh, Bihar, India

    Alok Ranjan

Authors
  1. Shashi Kumar
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  2. Subodh Kumar Suman
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  3. Alok Ranjan
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Contributions

All authors contributed to numerical analysis of the hat-stiffened panel. Material preparation, data collection, and analysis were performed by Dr. SK. The first draft of the manuscript was written by Dr. SK and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Shashi Kumar.

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Kumar, S., Suman, S.K. & Ranjan, A. A Parametric Study on Composite Panel Subjected to Compression Load. J. Inst. Eng. India Ser. A 105, 15–24 (2024). https://doi.org/10.1007/s40030-023-00773-2

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  • DOI: https://doi.org/10.1007/s40030-023-00773-2

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