高应变率加载下玻璃板碎片尺寸的理论模型

PDF(1009 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (1) : 69-72.

论文

高应变率加载下玻璃板碎片尺寸的理论模型

葛杰1 李国强2 陈素文2

作者信息 +

Theoretical model of glass fragment size at high strain rate

GE Jie1 ， LI Guo-qiang2 ， CHEN Su-wen2

Author information +

文章历史 +

摘要

基于材料损伤理论和损伤断裂机理，分析了普通平板玻璃在高应变率下的损伤破碎规律。根据玻璃碎片破坏损伤应变能和断裂表面能之间的平衡关系，推导了不同应变率下预测玻璃碎片大小的计算公式。该模型能够直接、定量地给出玻璃板中由于裂缝间的贯通形成的平均碎片大小，同时能够求出玻璃碎片的数量。对于该模型，讨论了玻璃板尺寸及临界应变等因素对玻璃碎片大小的影响。

Abstract

Base on damage mechanics and fracture mechanism of material, damage and fracture law of common glass plate at high strain rate is analyzed. Based on the balance between the strain energy coupled with damage and the fracture surface energy, a formula for predicting glass fragment size at different strain rate is derived. The model can provides a direct and quantitative method to determine the average fragment size generated by crack coalescence in glass, and the number of glass fragments can be obtained. The discussions about the effect of glass panel size and the critical strain on the glass fragment size are given.

导出引用

葛杰李国强陈素文 . 高应变率加载下玻璃板碎片尺寸的理论模型[J]. 振动与冲击, 2013, 32(1): 69-72

GE Jie;LI Guo-qiang;CHEN Su-wen . Theoretical model of glass fragment size at high strain rate[J]. Journal of Vibration and Shock, 2013, 32(1): 69-72