3D finite element simulations of high velocity projectile impact

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:72

Article

Irhan, Baris¹  Ozbolt, Josko¹  Ruta, Daniela¹ 

[1] Univ Stuttgart, Inst Construct Mat, D-70569 Stuttgart, Germany

关键词: Impact;    Numerical analysis;    Contact;    Rate sensitivity;    Bulk viscosity;    Fragmentation;    Microplane model;    Deletion criteria;   

DOI  :  10.1016/j.ijsolstr.2015.07.010

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

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