论文部分内容阅读
为了研究大型球磨机的抗震性能,首先建立了球磨机回转体和地基基础的整体系统有限元模型;寻找地震作用最危险工况,分别以我国现行抗震设计规范和澳大利亚抗震标准作为输入激励,在有限元分析软件Nastran中得到球磨机地震加速度峰值响应;然后,以该峰值响应作为输入载荷,建立了球磨机最危险部位的有限元子模型,进一步分析该危险部位的接触强度。该分析为大型球磨机抗震结构设计及整体抗震设计提供了理论依据。
In order to study the anti-seismic performance of large-scale ball mill, firstly, the overall system finite element model of the ball mill rotary body and foundation is established. In order to find the most dangerous working condition of the earthquake, the current seismic design code of China and Australian seismic standard are taken as input excitation, Then the peak response of the ball mill was used as the input load to establish the finite element model of the most dangerous part of the ball mill and to further analyze the contact strength of the dangerous part. The analysis provides a theoretical basis for the design of aseismatic structure of large ball mill and the overall seismic design.