PVB夾層玻璃的失效擴展
發(fā)布時間:2018-08-28 16:55
【摘要】:本文為探討聚乙烯醇縮丁醛(PVB)夾層玻璃斷裂失效的擴展規(guī)律,運用ANSYS/LSDYNA軟件對夾層玻璃在聚能射流沖擊作用下的變化進(jìn)行了仿真研究,分析了玻璃厚度對斷裂破壞效果及PVB薄膜厚度對失效擴展特性的影響。結(jié)果表明:沖擊作用下玻璃厚度對夾層玻璃斷裂破壞的影響較平緩。隨著PVB薄膜厚度的增加,玻璃試件的失效擴展特性(速度、起始加速度、后期減速度和穩(wěn)定加速度)減小,其吸能特性增強,斷裂失效的擴展過程趨于平緩。并從理論方面判定夾層玻璃在沖擊過程中的失效擴展速度主要取決于應(yīng)力分量,且PVB粘彈性層具有較強的吸能作用。
[Abstract]:In order to investigate the fracture and failure propagation of polyvinyl butyral (PVB) laminated glass, the change of laminated glass under the action of shaped jet impingement was simulated by ANSYS/LSDYNA software. The effect of glass thickness on fracture failure and failure propagation of PVB film was analyzed. The results show that the effect of glass thickness on the fracture and failure of laminated glass is more moderate. With the increase of PVB film thickness, the failure propagation characteristics (velocity, initial acceleration, late deceleration and steady acceleration) of glass specimens decrease, the energy absorption characteristics increase, and the propagation process of fracture failure tends to smooth. The failure propagation rate of laminated glass during impact is mainly determined by the stress component, and the PVB viscoelastic layer has strong energy absorption.
【作者單位】: 中北大學(xué)化工與環(huán)境學(xué)院;
【分類號】:TQ171.727
本文編號:2210001
[Abstract]:In order to investigate the fracture and failure propagation of polyvinyl butyral (PVB) laminated glass, the change of laminated glass under the action of shaped jet impingement was simulated by ANSYS/LSDYNA software. The effect of glass thickness on fracture failure and failure propagation of PVB film was analyzed. The results show that the effect of glass thickness on the fracture and failure of laminated glass is more moderate. With the increase of PVB film thickness, the failure propagation characteristics (velocity, initial acceleration, late deceleration and steady acceleration) of glass specimens decrease, the energy absorption characteristics increase, and the propagation process of fracture failure tends to smooth. The failure propagation rate of laminated glass during impact is mainly determined by the stress component, and the PVB viscoelastic layer has strong energy absorption.
【作者單位】: 中北大學(xué)化工與環(huán)境學(xué)院;
【分類號】:TQ171.727
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