Glass Failure Prediction Model

Beason, W. Lynn; Morgan, J R

doi:10.1061/(asce)0733-9445(1984)110:2(197)

Cited by 173 publications

(60 citation statements)

References 14 publications

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“…Instead, the maximum load resistance of 3.67 kPa (76.7 psf) was estimated using the procedure of ASTM E1300-09a [6]; this resistance is based on a 0.008 probability of breakage (cracking) of the lite and a 3-second load duration. Using the glass failure prediction model presented in Beason and Morgan [4] to adjust for a probability of breakage of approximately 0.500 (the lite's median resistance value), the lateral resistance becomes approximately 7.86 kPa (164 psf). Finally, adjusting from the 3-second load duration to the expected 30-minute load duration of the destructive panel tests, the lateral resistance becomes 5.27 kPa (110 psf).…”

Section: Laminated Glass Litesmentioning

confidence: 99%

“…Based on the probabilistic failure prediction model for glass plates developed by Beason and Morgan [4] and the work of Vallabhan [5], ASTM E1300-09a [6] provides a design procedure for rectangular glass lites supported on one, two, three, or four edges and subjected to 3-second wind loads. Monolithic and laminated glass lites subjected to blast and impact loads, for example, have received signifi cant attention [7][8][9][10][11][12]33] and design charts equating blast loading to 3-second duration wind loads have been developed [13], ASTM F2248-09 [14].…”

Section: Introductionmentioning

confidence: 99%

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Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Kennedy¹,

Weggel²,

Keanini³

2013

Int. J. CMEM

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A series of fi ve full-scale, nearly conventional, curtain wall specimens was tested in the UNC Charlotte Structures Laboratory. Specimens were subjected to quasi-static, uniform, out-of-plane loading to failure under displacement control. The tests were performed to obtain complete resistance curves, including the nonlinear behavior of the specimens up to 'ultimate failure'. Ultimate failure was defi ned as mullion fracture or signifi cant breach of the curtain wall system when viewed as the protective barrier between building occupants and the external blast load. Representative load-defl ection and loadstrain resistance curves are presented. The energy absorbed by the curtain wall system up to three different limit states -fi rst cracking of glass, fi rst yield of mullions, and fracture/breach of the system (ultimate failure) -and maximum mullion end rotations are computed from the experimental results. Ultimate energy absorption capacity -the recoverable linear strain energy plus the nonlinear energy due to formation of damage mechanisms -and maximum mullion end rotations are essential for reliable and economical design of blast resistant curtain walls. To this end, a simplifi ed methodology is presented for analytically approximating curtain wall resistance functions that can be input to an energy expression that models nonlinear structural dynamic behavior due to an 'impulsive' loading. The blast resistance of a curtain wall can then be approximated using this procedure. It is shown that a nearly conventional curtain wall, a conventional system with two modifi cations -use of laminated glass lites that are structurally glazed (wet-glazed) to a conventional framing system with structural silicone sealanthad nearly 14 times the ultimate energy absorption capacity and nearly four times the blast resistance as the fully conventional system. Keywords: Glass curtain wall; blast resistance; nonlinear SDOF design expression; static destructive tests. INTRODUCTIONEconomical design of curtain walls to resist extreme out-of-plane loads, such as blast loads, implies that the curtain wall can suffer signifi cant damage in a blast event. However, in order to be a protective barrier between building occupants and the external threat, the curtain wall system must remain largely intact to prevent it from becoming a fl ying debris hazard and limit blast overpressures intruding into the protected space. Modeling curtain wall systems after the onset of glass cracking or mullion yielding is a signifi cant challenge, requiring consideration of nonlinear material behavior and often nonlinear geometry. Further, the complex structural behavior of the curtain wall's individual components and their connections must be well understood.This present work continues a long-term study in which a calibrated, elastic, fi nite element (FE) curtain wall model was developed [1,2]. The model is capable of simulating static and dynamic responses (before cracking or yielding of system components) under general loading and considers linea...

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Section: Laminated Glass Litesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Kennedy¹,

Weggel²,

Keanini³

2013

Int. J. CMEM

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“…The glass failure prediction model (GFPM) by Beason and Morgan [3] is an unrestricted model that predicts glass break strength and deflection. The GFPM is the basis for ASTM E1300, the North American Standard on glass selection for wind loads, and is based on theoretical development as supported by a review of thousands of test data records for glass break.…”

Section: Glass Failure Prediction Model Overviewmentioning

confidence: 99%

Comparison of traditional and Herculite^®XP glazing subject to blast loads

Davis¹,

Marchand²,

Votruba-Drzal³

et al. 2010

WIT Transactions on the Built Environment

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Protection Engineering Consultants (PEC), in cooperation with PPG Industries, Inc., is investigating the performance of a new glass technology for antiterrorism/force protection (ATFP) applications. This new PPG glass product is significantly stronger than typical fully tempered glass, which is advantageous in impact, ballistic, and blast resistant window design. This paper compares the performance of this new glass technology, known as Herculite ® XP glazing, to that of traditional (annealed and fully-tempered) glazing subjected to blast loads. The performance of the Herculite ® XP glazing is based on results from a series of static tests and a large-scale blast test on eight windows. The results of the static and dynamic tests are briefly discussed. A brief discussion is also included on the use of a statistical fracture based glass strength model called the Glass Failure Prediction Model (GFPM) that was used to develop Herculite ® XP resistance functions employed in single-degree-of-freedom (SDOF) blast response models.

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“…Typically, the strength is explained assuming the existence of Griffith flaws and supposing the weakest-link principle. Predictions are based either on some standard distribution or on tables and diagrams obtained using a modelling tool such as the Glass Failure Prediction Model (GFPM) (Beason and Morgan 1984). There is disagreement among researchers as to which prediction model is the correct one to use (Fischer-Cripps and Collins 1995).…”

Section: Introductionmentioning

confidence: 99%

A numerical method for analysis of fracture statistics of glass and simulations of a double ring bending test

Kinsella

Persson

2018

Glass Struct Eng

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The results from a new numerical method for simulating the strength and fracture locations of small glass specimens subjected to double ring bending are compared with experimental data. The method implements the weakest-link principle while assuming the existence of Griffith flaws. A Weibull distribution for the strength is simulated based on a single population of Pareto distributed crack sizes. The effect of using different fracture criteria is investigated. An alternative distribution is simulated based on two populations of flaws. This distribution models the apparent bimodality in the empirical data set. The numerical method is dependent on a representation of the surface flaws condition in glass. As new techniques become available for examining the surface characteristics, this numerical method is promising as a means for modelling the strength better than current methods do.

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Glass Failure Prediction Model

Cited by 173 publications

References 14 publications

Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Comparison of traditional and Herculite^®XP glazing subject to blast loads

A numerical method for analysis of fracture statistics of glass and simulations of a double ring bending test

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Glass Failure Prediction Model

Cited by 173 publications

References 14 publications

Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Experimental program and simplified nonlinear design expression for glass curtain walls with low-level blast resistance

Comparison of traditional and Herculite®XP glazing subject to blast loads

A numerical method for analysis of fracture statistics of glass and simulations of a double ring bending test

Contact Info

Product

Resources

About

Comparison of traditional and Herculite^®XP glazing subject to blast loads