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Simulation Study of Adhesive Material for Sandwich Panel under Edgewise Compression Condition

机译:夹芯板边缘压缩条件下胶粘材料的仿真研究

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摘要

In order to study the interfacial adhesive material simulation method of a sandwich structure with aluminum alloy panels and a low-density foam core under edgewise compression condition, two finite element models were defined using material model no. 185 (MAT 185) adhesive element and tiebreak contact, respectively, by LS-DYNA. Under the conditions of different loading rates, and element sizes, the effects of peak load, energy absorption, failure mode of adhesive layer and the influence degree of the changing condition on the calculated results were compared between the two models, and then compared with the experiment results and theoretical results. The higher the loading rate was, or the smaller the element size was, the higher the peak load was. The simulation results obtained using MAT 185 were closer to the experimental results under the edgewise compression condition.
机译:为了研究在边缘压缩条件下铝合金面板和低密度泡沫芯夹层结构的界面粘结材料模拟方法,使用材料模型No.1定义了两个有限元模型。 LS-DYNA分别采用185(MAT 185)粘合元件和拉断接触。在两个模型之间比较了在不同加载速率和单元尺寸的条件下,峰值载荷,能量吸收,粘合剂层破坏模式以及变化条件对计算结果的影响程度的影响,然后与实验结果和理论结果。加载速率越高,或元件尺寸越小,峰值载荷越高。使用MAT 185获得的仿真结果更接近于边缘压缩条件下的实验结果。

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