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铝合金夹心板结构是现代舟桥甲板常用的结构形式,具有重量低、强度高的优点。本文针对五种铝合金夹心板模型(两种型材断面)进行了静态极限承载能力模型试验,并作了相应的非线性有限元数值模拟。数值计算中考虑了材料非线性和几何非线性效应,有限元模型中还考虑了坦克履带的刚化作用和初始焊接变形的影响。研究表明,铝合金夹心板在横向履带载和轮载的作用下,主要表现为受压面板的屈曲和夹心斜撑板的屈曲。本文的试验和计算结果符合较好,表明了二者的有效性。
Aluminum sandwich panels structure is a common structure of the modern bridge deck structure, with low weight, high strength advantages. In this paper, five kinds of aluminum alloy sandwich panels model (two profiles section) static ultimate load capacity of the model test, and made the corresponding nonlinear finite element numerical simulation. The material nonlinearities and geometrical nonlinear effects are taken into account in the numerical calculation. The finite element model also considers the effect of the tank crawling and the initial welding deformation. The results show that the buckling of the compression panel and the buckling of the sandwich stiffener are mainly caused by the aluminum alloy sandwich panel under the lateral crawler load and the wheel load. The experimental results and the calculated results are in good agreement, which shows the validity of the two methods.