论文部分内容阅读
目前多采用线弹性有限元法计算槽壳变形和应力分布规律,但由于槽壳实际上主要工作于弹塑性阶段,导致计算误差很大,甚至使计算最大变形与实测值相差近10倍之多。我们从自己的弹性有限元计算和实测结果出发,对槽壳试做了非线性有限元分析,这一工作目前尚属首次。本文以从日本引进的160kA铝电解槽为实例,完成了程序研制、模型建立和载荷反推等工作,计算出变形和应力分布规律,首次搞清了塑性区域逐步发展扩大的情况。
At present, linear elastic finite element method is used to calculate the deformation and stress distribution of slot shells. However, due to the fact that the slot shell is mainly used in the elasto-plastic phase, the calculation error is large and even the calculated maximum distortion is almost 10 times as much as the measured value . Based on our own finite element calculations and measured results, we did a nonlinear finite element analysis of the trough shell, which is the first time that this work is done. In this paper, the 160kA aluminum electrolytic cell introduced from Japan is taken as an example to complete the program development, model building and load backtracking and so on. The deformation and stress distribution are calculated and the plastic zone is gradually developed and expanded.