变电站铝合金接线板的失效仿真与结构优化

Failure Simulation and Structure Optimization of Aluminum Alloy Terminal Board in Substation

摘要:

某变电站铝合金接线板在服役中出现断裂现象，文中结合现场状况对其进行失效仿真和结构优化。采用有限元仿真软件对接线板受力状况进行分析，推断其失效与底板腐蚀减薄造成应力集中和形变有关。据此对接线板的结构进行优化，研究倒角处理、螺栓孔数量和布局对接线板受力和形变的影响。结果发现，合理的倒角处理、螺栓孔数量和布局可以有效降低接线板断裂处的应力和形变。综合倒角和螺栓孔布局的优势，可以实现应力和形变的双重抑制，实现结构最优。

Abstract:

he aluminum alloy terminal board in a substation cracked during the service. The failure simulation and structure optimization are carried out combined with the on-site conditions in this work. The finite element simulation software is used to analyze the stress status of terminal board, and it is inferred that its failure is related to the stress concentration and deformation caused by the corrosion and thinning of the bottom plate. On this basis, the structure of terminal board is optimized, and the influence of chamfering treatment and the number and layout of bolt holes on the load and deformation of terminal board are investigated. The results show that the reasonable chamfering treatment and the reasonable number and layout of bolt hole can effectively reduce the stress and deformation at the breaking point of terminal board. Optimal structure can beachieved by integrating the advantages of chamfering with bolt hole layout in terms of dual suppression of stress and deformation.