Damage progression from impact in layered glass modeled with peridynamics

• Published in: Central European Journal of Engineering Vol. 2; no. 4; pp. 551 - 561
• Main Authors: Bobaru, Florin, Ha, Youn Doh, Hu, Wenke
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Versita 01.12.2012; Versita; De Gruyter
• Subjects: Brittle fracture; Dynamic fracture; Engineering; Glass; Impact; Peridynamics; Research Article; Impact; Peridynamics; Dynamic fracture; Brittle fracture; Glass
• ISSN: 1896-1541; 2391-5439; 2081-9927; 2391-5439
• DOI: 10.2478/s13531-012-0020-6

Dynamic fracture in brittle materials has been difficult to model and predict. Interfaces, such as those present in multi-layered glass systems, further complicate this problem. In this paper we use a simplified peridynamic model of a multi-layer glass system to simulate damage evolution under impact with a high-velocity projectile. The simulation results are compared with results from recently published experiments. Many of the damage morphologies reported in the experiments are captured by the peridynamic results. Some finer details seen in experiments and not replicated by the computational model due to limitations in available computational resources that limited the spatial resolution of the model, and to the simple contact conditions between the layers instead of the polyurethane bonding used in the experiments. The peridynamic model uncovers a fascinating time-evolution of damage and the dynamic interaction between the stress waves, propagating cracks, interfaces, and bending deformations, in three-dimensions.