Laminated Glass Structural Performance and Modeling
Summary
Laminated glass consists of two or more glass plies bonded by polymeric interlayers, creating a composite that combines transparency with enhanced mechanical resilience. Its structural performance is governed by the interplay between brittle glass layers and viscoelastic interlayers, which together define load distribution, energy dissipation and post-breakage integrity. Under static loads, laminated glass exhibits improved flexural capacity and crack arrest compared with monolithic glass, with the interlayer maintaining fragment cohesion after fracture. In dynamic scenarios—such as blasts, impacts and vibrations—the rate-dependent stiffness and damping properties of the interlayer critically influence deflection, natural frequencies and energy absorption. Analytical beam and plate theories have been extended to account for layered interaction, while numerical models based on the finite element method permit detailed simulation of deflection, stress fields and delamination processes. Experimental characterisation, spanning full-scale bending tests, modal analyses and fracture toughness measurements, remains essential to validate and calibrate these models. The integration of these approaches supports safer and more efficient design of glazing in façades, canopies, partitions and structural members, addressing demands for architectural transparency, energy efficiency and occupant safety worldwide.
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Research from all publishers
Recent investigations have advanced understanding of laminated-glass behaviour through combined experimental and modelling strategies. A 2024 study on frameless dome beams examined in-plane bending and lateral-torsional buckling of slender glass members with varying thickness, demonstrating a strong correlation between geometric parameters and critical buckling load. Full-scale tests informed numerical models that accurately predict deformation capacity and allowable strain for design optimisation. A 2023 analysis of insulating glass units explored monolithic versus layered response by comparing analytical code models with finite element simulations under vertical loading. Results highlighted the superior accuracy of numerical methods in capturing interlayer effects and gas cavity interactions, particularly in two-side supported configurations under linear loads. Also in 2023, a comprehensive review of interlayer materials and design approaches surveyed polymer formulations and finite element assessments of impact and blast scenarios. This work identified material innovations and modelling best practices that enhance breakage resistance, acoustic performance and sustainability, providing practical guidelines for the development of next-generation laminated glass systems.
Laminated Glass Structural Performance and Modeling publication trend
The graph below shows the total number of articles in laminated glass structural performance and modeling across all publications each year (not limited to Nature Index journals).
Technical terms
Laminated glass: Multiple glass plies bonded by a polymeric interlayer to form a composite structure with improved safety and post-breakage integrity.
Interlayer: A viscoelastic polymer film (commonly polyvinyl butyral or ethylene-vinyl acetate) that bonds glass plies and governs energy dissipation, damping and fragment retention.
Finite element method (FEM): Numerical technique that subdivides a structure into discrete elements to simulate stress, strain and deflection in layered glass assemblies under various loads.
Lateral-torsional buckling: Instability mode in slender glass beams whereby combined lateral displacement and twisting occur under in-plane bending loads.
Delamination: Separation between glass plies and interlayer under load, affecting stiffness, strength and energy absorption characteristics.
References
- Bending and lateral-torsional buckling investigation on glass beams for frameless domes. Results in Engineering (2024).
- Modelling of layers interactions on the structural behaviour of insulating glasses. Vertical deflection analyses. Case Studies in Construction Materials (2023).
- An overview for materials and design methods used for enhancement of laminated glass. Hybrid Advances (2023).
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