Numerical multi-scale modeling for textile woven fabric against ballistic impact

• Published in: Computational materials science Vol. 50; no. 7; pp. 2172 - 2184
• Main Authors: Ha-Minh, Cuong, Kanit, Toufik, Boussu, François, Imad, Abdellatif
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.05.2011; Elsevier
• Subjects: Continuity; Damage mechanics; Displacement; Evolution; Exact sciences and technology; Fabric/textiles; Fabrics; Failure; Finite element analysis (FEA); Finite element method; Fracture mechanics (crack, fatigue, damage...); Fundamental areas of phenomenology (including applications); Impact behavior; Mathematical models; Multi-scale model; Physics; Projectiles; Solid mechanics; Structural and continuum mechanics; Fabric/textiles; Damage mechanics; Multi-scale model; Impact behavior; Finite element analysis (FEA); Yield criterion; Microscopic model; Composite material; Penetration ballistics; Finite element method; Stress distribution; Multiscale method; Numerical simulation; Braided fabric; Mechanical shock; Damaging; impact behavior; multi scale model
• ISSN: 0927-0256; 1879-0801
• DOI: 10.1016/j.commatsci.2011.02.029

► A multi-scale modeling of the ballistic impact on a plain-woven fabric was done. ► The continuity of the fabric global displacement is ensured in the multi-scale model. ► The effect of the macroscopic area of multi-scale models is investigated. ► The pertinent multi-scale model was validated by comparing with the mesoscopic one. In this study, a FEM analysis has been carried out to find out pertinent multi-scale model for an investigation of a ballistic impact on 2D KM2® plain-woven fabrics. Multi-scale models are a combination between macroscopic and mesoscopic models. This study aims at testing a multi-scale model in order to minimize the computing time. Three configurations were analyzed by varying the ratio of macroscopic and mesoscopic areas: 75.3–24.7%, 65.5–34.5%, 56.3–43.7% with two impact velocities 60 m/s and 245 m/s. In these multi-scale models, the continuity in macroscopic–mesoscopic interfaces is ensured by checking the evolution of global displacements of the fabric during impact. The effect of the macroscopic area of multi-scale models on the ballistic performance of the fabric is also investigated. The optimal multi-scale model was validated by comparison with results obtained from a mesoscopic model in terms of the evolutions of the projectile velocity, energy forms, the overall behavior of the fabric during impact and the force applied on the projectile. The failure criterion Forming Limited Diagram (FLD) is suggested for bundle failure. The observed damage mechanisms of the fabric during penetration time of the projectile are discussed and compared among numerical models.