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利用有限元与试验模态分析技术，探讨了为改善焊接结构动态特性，在焊接机床床身上构造空气泵动阻尼结构的原理、方法与效果。
Using finite element method and experimental modal analysis technique, the principle, method and effect of constructing dynamic damped structure of air pump on the welding machine bed are discussed in order to improve the dynamic characteristics of welded structure.