Title of article :
Characteristics of windshield cracking upon low-speed impact: Numerical simulation based on the extended finite element method
Author/Authors :
Xu، نويسنده , , Jun and Li، نويسنده , , Yibing and Chen، نويسنده , , Xi and Yan، نويسنده , , Yuan and Ge، نويسنده , , Dongyun and Zhu، نويسنده , , Mengyi and Liu، نويسنده , , Bohan، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
7
From page :
582
To page :
588
Abstract :
Windshield glass crack characteristics are of great interest to vehicle manufacturers, safety engineers, and accident investigators, because they contain important information on energy mitigation, pedestrian protection, and accident reconstruction. We use the extended finite element method (XFEM) to analyze the model problem of low-speed head impact on a windshield plate. Both the radial crack and circumferential crack propagations are characterized. A parametric study is carried out to investigate the effects of impact speed, head mass, initial material flaw, material fracture criterion, etc., and correlate them with the crack direction and length. It is found that the critical accident information, such as the impact speed or damage stress, can be deduced from the crack pattern characteristics. A qualitative bridge can be established between numerical simulation result and real-world accident via the crack growth mechanism. Our study shows that XFEM is a useful tool for simulating several types of cracks that appear during quasi-static indentation or low-speed impact of foreign objects on windshield materials.
Keywords :
Windshield , GLASS , Extended finite element method , Low-speed impact , crack propagation
Journal title :
Computational Materials Science
Serial Year :
2010
Journal title :
Computational Materials Science
Record number :
1687477
Link To Document :
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