Numerical simulation on penetration of concrete targets based on three-dimensional mesoscopic modeling
In order to study the impacts of distribution of aggregates in concrete targets on the penetration per-formance of projectiles,a mesoscopic modeling and numerical simulation analysis of the anti-penetration per-formance of aggregate-containing concrete targets was conducted.A mesoscopic geometric model considering the geometric shape,size of aggregates,and their non-uniform distribution in the concrete matrix was construc-ted using the Voronoi algorithm.A finite element analysis model was generated through mapping methods,and the influence of aggregate volume ratio on the projectile penetration performance was systematically analyzed.The results show that when maintaining a constant aggregate grading and random distribution,the penetration speed of the projectile significantly decreases,and the anti-penetration capability of the concrete targets is sig-nificantly improved as the aggregate volume ratio increases from 25%to 30%.The geometric shape,size,and content of aggregates have a significant effect on energy absorption and dissipation during the penetration process.A reasonable aggregate content can enhance the anti-penetration performance of concrete materials more effectively.
concreteaggregatepenetration resistanceVoronoi algorithmfinite element model
万方数据
维普
