超长筒体与滚圈三维多体接触体系的力学特征

The Mechanics of 3D Multi-body Contact System of Long Shell and Tyres

针对筒体、滚圈结构重复性强的特点,基于多重子结构技术,建立了超长筒体与滚圈三维多体接触模型;应用参数二次规划法,对中铝公司河南分公司2号窑筒体与滚圈的多体接触模型进行了有限元数值计算,得出结论:a.从0°到360°,档位段筒壳的等效应力突变5次,筒节段筒壳的等效应力突变4次;b.档位段筒壳强度较弱,筒节段筒壳强度有一定富余;c.2,3档位段筒壳是筒壳强度的薄弱环节。

According to the high iterative technique is adopted to set up the multi-body feature of shell and tyre structure, the multi-level substructure contact model between tyres and long shell. Applying parametric quadratic programming method, the multi-body contact FEM analysis of the No. 2 rotary kiln in Henan Branch of China Aluminum Company is done, and the conclusions are as follows： The equivalent stress of shell at supports changes 5 times, and at other parts changes 4 times; the strength of shell at supports is weak, and at other parts is affluent; the strength of shell at the supports 2 and 3 is the weakest.