3D finite element simulations of high velocity projectile impact. (15th October 2015)

• Record Type: Journal Article
• Authors: İrhan, Barış; Ožbolt, Joško; Ruta, Daniela
• Is Part Of: International journal of solids and structures. Volume 72(2015)
• Page Start: 38
• Page End: 49
• Publication Date: 2015-10-15
• Subjects: Impact -- Numerical analysis -- Contact -- Rate sensitivity -- Bulk viscosity -- Fragmentation -- Microplane model -- Deletion criteria; Mechanics, Applied -- Periodicals; Structural analysis (Engineering) -- Periodicals; Elastic solids -- Periodicals; Mécanique appliquée -- Périodiques; Constructions, Théorie des -- Périodiques; Solides élastiques -- Périodiques; Elastic solids; Mechanics, Applied; Structural analysis (Engineering); Periodicals; 624.18
• DOI: 10.1016/j.ijsolstr.2015.07.010
• Languages: English
• ISSNs: 0020-7683

Abstract

Abstract: An explicit three-dimensional (3D) finite element (FE) code is developed for the simulation of high velocity impact and fragmentation events. The rate sensitive microplane material model, which accounts for large deformations and rate effects, is used as a constitutive law. In the code large deformation frictional contact is treated by forward incremental Lagrange multiplier method. To handle highly distorted and damaged elements the approach based on the element deletion is employed. The code is then used in 3D FE simulations of high velocity projectile impact. The results of the numerical simulations are evaluated and compared with experimental results. It is shown that it realistically predicts failure mode and exit velocities for different geometries of plain concrete slab. Moreover, the importance of some relevant parameters, such as contact friction, rate sensitivity, bulk viscosity and deletion criteria are addressed.