A numerical model on PVB laminated windshield subjected to headform low-speed impact

Xiao, Xuefeng; Liu, B H; Wang, Y; Li, Y B; Xu, Jun

doi:10.1088/1742-6596/451/1/012016

Cited by 14 publications

(7 citation statements)

References 9 publications

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“…Several studies have tried to model the impact process in its full complexity. They considered various loading conditions in finite element analysis: blast resistance 1 , ball drop tests 2 or headform impact 3 . At this level of macroscopic description, the complexity of the impact problem and the complex rheological properties of the polymer preclude a precise description of the dissipation mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Large strain viscoelastic dissipation during interfacial rupture in laminated glass

et al. 2017

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In the dynamic rupture of laminated glass, it is essential to maximize energy dissipation. To investigate the mechanisms of energy dissipation, we have experimentally studied the delamination and stretching of a polymeric viscoelastic interlayer sandwiched between glass plates. We find that there is a velocity and temperature domain in which delamination fronts propagate in a steady state manner. At lower velocities, fronts are unstable, while at higher velocities, the polymer ruptures. Studying the influence of the interlayer thickness, we have shown that the macroscopic work of fracture during the delamination of the interlayer can be divided in two main components: (1) a near crack work of fracture which is related to the interfacial rupture and to the polymer deformation in the crack vicinity. (2) A bulk stretching work, which relates to the stretching of the interlayer behind the delamination front. Digital image correlation measurements showed that the characteristic length scale over which this stretching occurs is of the order of the interlayer thickness. Finally, an estimate of the bulk stretching work was provided, based on a simple uniaxial tensile test.

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Section: Introductionmentioning

confidence: 99%

Large strain viscoelastic dissipation during interfacial rupture in laminated glass

et al. 2017

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“…The LG was impacted by a standard head form impactor at the speed of 8 m/s based on the LS-DYNA platform. The results were compared with the dynamic experiments of LG-PVB under head form impact to find the most accurate FE model [55]. Pyttel et al [56] have found failure benchmark norm for the LG when subjected to impact loading.…”

Section: Literature Reviewmentioning

confidence: 99%

Numerical Analysis of Impact Fracture of Laminated Glass - A Review

Vedrtnam¹

2017

MOJCE

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IntroductionLG comprises of two layers of glass and one or more layers of polymer film (inter-layer) that is sandwiched in-between by putting under heat and pressure. Inter-layer improves mechanical properties like impact strength, fracture toughness and failure mode of LG [1]. As area of impact increases there is possibility of increment of the impact resistance. The fracture of LG is designed so as to the Inter layer keeps together broken pieces that can possibly cause dangerous incidents or accidents. The LG dampens the energy of impact and improves the brittle fracture behavior when compared with monolithic glass. This functionality forces designers to use LG wherever there may be an injury risk due to glass fracture. A good no of theoretical studies [2][3][4][5][6][7][8], experimental studies [9][10][11][12][13][14][15][16][17][18][19][20][21][22] numerical studies [10,, LS DYNA and ABAQUS based studies [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] and discrete element (DE)/finite element (FE) based studies are reported to analyze impact failure of LG. The present work is focused on reviewing the numerical algorithms used to model the impact fracture of LG. Literature ReviewImpact failure analysis of LG is commonly done experimentally followed by numerical simulations. The failure processes of LG due to impact analyzed during pre-failure, failure and post-failure stages. Analytical models are commonly employed to describe the mechanical performance of LG for the pre and post-failure stages [46][47][48][49][50]. The post-failure response of LG is also explained by numerical simulations [51,52] and experiments. The literature frequently focuses on the principal damage pattern and glass-ply cracking. The commonly used numerical algorithms sighted in the literature for impact simulation are element deletion method (EDM), the continuum damage mechanics (CDM), the discrete element method (DEM), the combined discrete/finite element methods (DEM/FEMs), the extended finite element method (XFEM) and the cohesive zone model (CZM). The adhesion modeling is usually simulated using shared node method, the penalty-based methods and the intrinsic CZM. The EDM consist of removal of the mass of elements from the global mass matrix or set the stress of elements to zero, so as to represent the failure of these elements (used in LS-DYNA). This method is used in [53,54]. Xu et al. developed a numerical model on LG-PVB subjected to low-speed impact. The LG was impacted by a standard head form impactor at the speed of 8 m/s based on the LS-DYNA platform. The results were compared with the dynamic experiments of LG-PVB under head form impact to find the most accurate FE model [55]. Pyttel et al. [56] have found failure benchmark norm for the LG when subjected to impact loading. It has been stated that a hazardous energy threshold should be reached during a finite expanse before failure took place. To regulate the norm and estimate its precision, various tests with curved and plain samples of LG were p...

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“…This method is used. 53,54 Xu et al 55 developed a numerical model on LG-PVB subjected to low-speed impact. The LG was impacted by a standard head form impact or at the speed of 8 m/s based on the LS-DYNA platform.…”

Section: Literature Reviewmentioning

confidence: 99%

Untitled

2017

MOJCE

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Laminated glass (LG) is a sandwiched composite structure, composed of two pieces of outer glass layers and one or more pieces of the polymer films (interlayer) sandwiched inbetween of the glasses. Impact strength of LG is the most significant mechanical property due to architectural, glazing, automotive, and decorative applications. Recently, a good no of numerical simulations are reported for impact failure analysis of LG. The purpose of this mini review is discussion on numerical algorithms for modeling the principal damage pattern and glass-ply cracking in LG. It is observed from this review that quantitative works need to be carried out to validate the capacity of numerical algorithms in the impact failure analysis of the LG.

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A numerical model on PVB laminated windshield subjected to headform low-speed impact

Cited by 14 publications

References 9 publications

Large strain viscoelastic dissipation during interfacial rupture in laminated glass

Large strain viscoelastic dissipation during interfacial rupture in laminated glass

Numerical Analysis of Impact Fracture of Laminated Glass - A Review

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