夹层玻璃抗弯性能与温度的关系

Correlation Between Temperature and Bending Behavior of Laminated Glass

利用负压加载的方式,研究了均布载荷下夹层玻璃在不同温度下的弯曲性能,并分别测试了夹层玻璃的挠度和板中心最大主应力。夹层玻璃配置为两片1 000 mm×1 000 mm×5 mm的普通浮法玻璃,中间层为0.38 mm的PVB胶片。结果表明,在4 kPa载荷下,随着环境温度从18℃升高到35℃,夹层玻璃板中心挠度从4.15 mm增加到5.16 mm,最大主应力从8.94 MPa增加到10.50 MPa;同时给出了夹层玻璃板中心挠度和最大主应力随温度变化的拟合曲线。

The bending behavior of laminated glass was analyzed using negative uniform pressure test.The laminated glass consists of two monolithic 5 mm float glass and joints with 0.38 mm PVB interlayer.The dimension of laminated glass is 1 000 mm×1 000 mm.It indicated that the center deflection of the laminated glass increased from 4.15 mm to 5.16 mm and the center maximum stress increased from 8.94 MPa to 10.50 MPa with the environmental temperature raised form 18 ℃ to 35 ℃.The fit curves of the center deflection and maximum principal stress of laminated glass with temperature was given.