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Finite element simulation of impact response of wire mesh screens

机译:丝网屏幕冲击响应的有限元仿真

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摘要

In this paper, the response of wire mesh screens to low velocity impact with blunt objects is investigated using finite element (FE) simulation. The woven wire mesh is modelled with homogeneous shell elements with equivalent smeared mechanical properties. The mechanical behaviour of the woven wire mesh was determined experimentally with tensile tests on steel wire mesh coupons to generate the data for the smeared shell material used in the FE. The effects of impacts with a low mass (4 kg) and a large mass (40 kg) providing the same impact energy are studied. The joint between the wire mesh screen and the aluminium frame surrounding it is modelled using contact elements with friction between the corresponding elements. Damage to the screen of different types compromising its structural integrity, such as mesh separation and pulling out from the surrounding frame is modelled. The FE simulation is validated with results of impact tests conducted on woven steel wire screen meshes.
机译:在本文中,金属丝的响应目筛网钝器利用有限元(FE)模拟进行了研究低速冲击。的编织金属丝网被建模与等效抹黑机械性能均匀的壳单元。用钢丝上的拉伸试验啮合优惠券以产生用于在FE使用的涂抹壳材料中的数据实验确定的编织金属丝网的机械性能。具有低质量(4千克)和大质量(40千克)提供相同的冲击能量冲击的影响进行了研究。的金属丝网筛并包围它的铝框之间的接合是利用接触元件与相应的元件之间的摩擦建模。损坏到不同类型的损害其结构的完整性,如网状分离和从周围框架拉出的屏幕被建模。的有限元模拟进行验证与钢丝编织筛网进行的冲击试验结果。

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