CAJ | 학술논문

以机械系统模态分析理论为基础，分析了桥式起重机简支梁模型振动特性，提出了基于经验模态分解的桥式起重机模态分析方法。简支梁振动响应通过经验模态分解处理得到固有模态函数，分析表明固有模式函数与振动模式函数具有较高的一致性。最后通过简支梁振动实验验证了桥式起重机EMD分析方法的可实现性。基于EMD的桥式起重机模态分析方法对于在用、维修和改造桥式起重机的模态分析具有重要意义。
이궤계계통모태분석이론위기출，분석료교식기중궤간지량모형진동특성，제출료기우경험모태분해적교식기중궤모태분석방법。간지량진동향응통과경험모태분해처리득도고유모태함수，분석표명고유모식함수여진동모식함수구유교고적일치성。최후통과간지량진동실험험증료교식기중궤EMD분석방법적가실현성。기우EMD적교식기중궤모태분석방법대우재용、유수화개조교식기중궤적모태분석구유중요의의。
The vibration characteristics of the bridge crane simply-supported beam model were analyzed according to the modal analysis theory of mechanical system, then the paper proposed the bridge crane modal analysis method based on EMD. The vibration response of simply-supported beam model could be transformed into some intrinsic mode functions, which showed high consistency with vibration mode functions. At last an experiment was carried out and the result proved that this method could be realized. It was significant for the bridge crane in use, maintenance and renovation.