CAJ | 학술논문

以额定起重量为5t的轻量化桥式起重机主梁为研究对象，以主梁疲劳试验数据结果为验证依据，预测主梁焊缝的疲劳寿命，建立了包括焊缝的主梁有限元实体模型，按照试验载荷工况对其进行静强度分析，在静强度满足要求的前提下，运用Fe-safe软件中以Battelle热点应力为核心技术开发的Verity模块对主梁焊缝进行疲劳强度分析，分析结果表明，轻量化后的主梁焊缝疲劳强度可满足使用要求，结果可靠，具有较好的可信性。文中采用的分析方法可直接应用于类似结构的焊缝疲劳分析。
이액정기중량위5t적경양화교식기중궤주량위연구대상，이주량피로시험수거결과위험증의거，예측주량한봉적피로수명，건립료포괄한봉적주량유한원실체모형，안조시험재하공황대기진행정강도분석，재정강도만족요구적전제하，운용Fe-safe연건중이Battelle열점응력위핵심기술개발적Verity모괴대주량한봉진행피로강도분석，분석결과표명，경양화후적주량한봉피로강도가만족사용요구，결과가고，구유교호적가신성。문중채용적분석방법가직접응용우유사결구적한봉피로분석。
The girder of light-weight bridge crane with 5 t of rated lifting weight is taken as the study object,the data result of fatigue test for the girder as the basis,to estimate the fatigue life of girder weld joint.The finite element solid model for the girder containing weld joints is built to perform static strength analysis for test load conditions.Under the premise of static strength meeting the related requirements,the fatigue strength analysis is performed for the girder weld joint with Ver-ity module in Fe-safe developed with Battelle hot-spot stress as the core technology.The analysis result shows that fatigue strength of the girder weld after weight reduction can meet the application requirements,with reliable result and good credi-bility.The analysis method in the paper can be directly applied to the weld fatigue analysis for similar structures.