Influence and Mechanism of Crack Morphology on Post-Fracture Stiffening Effect of SG-laminated Glass
The effect of tension stiffening allows SG-laminated tempered glass to preserve specific post-fracture mechanical performance, which is significantly influenced by crack morphology, including fragment density and distribution. Accurately evaluating and predicting the post-fracture performance of lam...
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| Main Author: | |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Shanghai Jiao Tong University
2025-08-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
| Subjects: | |
| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-8-1123.shtml |
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| Summary: | The effect of tension stiffening allows SG-laminated tempered glass to preserve specific post-fracture mechanical performance, which is significantly influenced by crack morphology, including fragment density and distribution. Accurately evaluating and predicting the post-fracture performance of laminated glass is essential for balancing cost and performance. However, limited work has addressed how crack morphology affects the stiffening behavior of laminated glass after fracture. In this paper, a series of random-cracked tensile tests on SG-laminated tempered glass is performed. The results reveal that the fragment density influences the post-fracture performance of SG-laminated glass by affecting the stress trajectory, and the tensile strength and equivalent stiffness decrease linearly and exponentially, respectively, with increasing fragment density. Afterwards, according to the experimental results, a hypothesis of the effective bonding is proposed and an improved finite element model is then developed. The proposed model accurately predicts the post-fracture tensile performance of laminated glass. Finally, the impact of fragment offset on the stiffening effect is discussed. |
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| ISSN: | 1006-2467 |