基于模态振型优化的真空凝壳炉减振设计方法  

Vibration Reduction Design Method of Vacuum Arc Skull Furnace Based on Mode Shape Optimization

作　　者：高昕星 刘鑫 张瑞宇 刘时兵 李心可 GAO Xin-xing;LIU Xin;ZHANG Rui-yu;LIU Shi-bing;LI Xin-ke(SINOMACH Engineering Vibration Control Technology Research Center,SINOMACH Academy of Science and Technology Co.,Ltd.,Beijing 100080,China;Shenyang Research Institute of Foundry Co.,Ltd.CAM,Shenyang 110022,China;Shenyang Vacuum Technology Institute Co.,Ltd.,Shenyang 110042,China)

机构地区：[1]国机集团科学技术研究院有限公司工程振动控制技术研究中心,北京100080 [2]中国机械总院集团沈阳铸造研究所有限公司,辽宁沈阳110022 [3]沈阳真空技术研究所有限公司,辽宁沈阳110002

出　　处：《真空》2023年第3期76-79,共4页Vacuum

基　　金：国机集团重大科技专项(SINOMACH-ZDZX-2020-03);工信部高质量发展专项***项目。

摘　　要：真空电弧凝壳炉属于特种材料铸造装备,离心浇铸过程中可能受到周期性激振力以及外部设备振动影响而诱发自身壳体共振,不仅影响铸件质量,而且会造成安全隐患。本文对某型真空电弧凝壳炉进行了模态分析,查明了局部设计不足是导致出现低阶局部振型的原因。通过补强结构,将一阶模态的频率从贴近工频频率的56.786Hz提升到较为安全的77.610Hz,振幅从3.540mm降低至0.323mm,模态振型优化方法实现了较好的减振设计效果。Vacuum arc skull furnace is a special material casting equipment.In the process of centrifugal casting,it may be affected by periodic excitation force and vibration of external equipment,which will induce resonance of its own shell.In consequence,shell resonancereduces the casting quality and formssecurity risk.In this paper,the modal analysis of avacuum arc furnace is carried out,and it is found that the local design deficiency is the cause of the low-order local mode.By reinforcing the structure,the first-order mode frequency is increased from 56.786Hz(close to the power frequency)to 77.610Hz(relatively safe),and the amplitude is reduced from 3.540mm to 0.323mm.In conclusion,modal shape optimization method has achieved a good effect of vibration reduction design.

关 键 词：真空电弧凝壳炉 模态分析 振型优化 振动控制 减振设计 

分 类 号：X966[环境科学与工程—安全科学]