Experimental and finite element study on the spring back of double curved aluminum/polypropylene/aluminum sandwich sheet
Experimental and finite element study on the spring back of double curved aluminum/polypropylene/aluminum sandwich sheet
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DOI：
10.1016/j.matdes.2010.04.024
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发表时间：
2010-10
影响因子：
8.4
通讯作者：
M. Parsa;S. Ahkami;Mahmood Ettehad
中科院分区：
文献类型：
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作者：
M. Parsa;S. Ahkami;Mahmood Ettehad
板料成形过程中最突出的特点是卸载时的弹性恢复现象，导致回弹和侧壁卷曲。金属-聚合物层压板是具有许多潜在应用的新兴材料。因此，回弹评估对于从这些新板材生产精密产品是强制性的。本文介绍了AA 3105/聚丙烯/AA 3105夹芯板材料双曲率成形后的回弹评价结果。采用隐式和显式有限元程序对双曲率成形过程进行了数值模拟。分析了夹层板厚度、刀具曲率半径等几何参数对回弹的影响。
The most prominent feature of sheet material forming process is an elastic recovery phenomenon during unloading which leads to spring back and side wall curl. Metal–polymer laminate sheets are emerging materials that have many potential applications. Therefore evaluation of spring back is mandatory for production of precise products from these new sheet materials. In this paper, the results of spring back evaluation of AA3105/polypropylene/AA3105 sandwich sheet materials have been presented after being subjected to double-curvature forming. Numerical simulation of double-curvature forming process has also been carried out using both implicit and explicit finite element programs. The influences of some geometrical parameters on spring back such as thickness of sandwich sheet and tool curvatures radii have been evaluated.