筒体与滚圈大面积多体接触问题的有限元解法

FEM Calculation of Large Superficial Multi-body Contact Problem between Kiln Shell and Tyre

针对筒体与滚圈大面积多体接触及结构重复性强的特点,应用接触伪单元及子结构技术,建立了筒体与滚圈的多体接触模型,通过定义当量密度,将窑皮、扬料板等的重量引起的载荷自动转化到其作用区域的体积上,减小了载荷处理的工作量.筒体与滚圈多体接触问题数值计算的结果表明:档位段筒壳应力远大于筒节段筒壳应力,档位段筒壳的强度较弱,筒节段筒壳强度有一定富余.

According to the feature of high iterative structure and large superficial multi - body contact of shell and tyre , the multi - body contact model between shell and tyre is set up by applying pseudo contact element and substructure technique. The loads from the weights of additional structure such as crust and lifter can be treated easily by defining equal density. Through numerical calculation of the multi - body contact problem of shell and tyre, the following conclusion can be drawn out ： the stress at shell supports if far greater than that at other parts, the intensity at shell supports is weaker and at other parts is affluent.