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The Influence of Elastic Support of Component Glass Panes on Deflection and Stress in Insulating Glass Units-Analytical Model

  • 0Faculty of Civil Engineering, Czestochowa University of Technology, Dąbrowskiego 69, 42-201 Częstochowa, Poland.
Materials (basel, Switzerland) +

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September 28, 2024

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September 28, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Rotational stiffness in insulating glass units (IGUs) affects stress and deflection. While elastic support reduces pane stress, it can increase overall load, with effects varying by load type.

Area Of Science

  • Building Science
  • Materials Science
  • Structural Engineering

Background

  • Insulating glass units (IGUs) are crucial for building thermal performance.
  • Sealed gas cavities in IGUs can be affected by climatic loads, altering operational deflection and stress.
  • Current models often approximate glass pane support as simply supported.

Purpose Of The Study

  • To investigate the impact of elastic edge support (rotational stiffness) on IGU performance.
  • To develop coefficients for calculating cavity volume change, deflection, and stress in elastically supported panes.
  • To analyze the influence of rotational stiffness on static values under various loads.

Main Methods

  • Application of linear-elastic plate theory to determine calculation coefficients.
  • Computational modeling of exemplary IGUs with varying structures and rotational stiffness.
  • Analysis of loads including atmospheric pressure changes and wind.

Main Results

  • Elastic support generally reduces deflection and stress in individual glass panes compared to simple support.
  • A feedback loop exists where reduced pane deflection can increase the load on the panes due to altered gas interaction.
  • The influence of rotational stiffness varied: negative for symmetrical loads, positive for wind loads.

Conclusions

  • Rotational stiffness is a significant factor influencing IGU behavior under load.
  • The assumption of simple support may not fully capture IGU performance, especially under wind loads.
  • Understanding the interplay between pane stiffness and gas cavity dynamics is key for optimizing IGU design.

Keywords:

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