Effects of reinforcement ratio and impact position on anti-penetration properties of reinforced concrete
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摘要: 阐述了侵彻钢筋混凝土几种常用的建模方法,选用AUTODYN中的Lagrange算法,对已有的动能弹侵彻钢筋混凝土问题进行了计算,计算结果与试验数据符合较好。使用此方法,分析了含筋率和配筋方式对钢筋混凝土靶抗侵彻性能的影响,以及弹着点对动能弹侵彻性能的影响。研究表明,钢筋越粗或者钢筋编织越密,即含筋率越高,钢筋混凝土靶板的抗侵彻能力越强,尤其对于动能弹直径大于靶板中钢筋间距的情况,效果明显;另外,弹着点对动能弹侵彻能力有较大影响。 更多还原Abstract: Several common methods to simulate the problem of penetrating reinforced concrete were presented. Lagrange algorithm in AUTODYN was used to calculate the experiment of kinetic energy projectile penetrating reinforced concrete from the reference, the results were agreed well. With this method, the influence of reinforcement ratio, rebar schemes and impact position were analyzed. It is indicated, from the numerical results, increasing reinforcement ratio can enhance the anti-penetration property of reinforced concrete, especially in the case, where the diameter of projectile exceeds the distance of rebar. In addition, the influence of impact position is obvious.
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