CAJ | 학술논문

目的：研究吊篮在离心载荷下的力学行为，尤其是强度和刚度性能。方法通过精细化模拟吊篮系统各部件间的接触关系，在对某离心机吊篮初始设计方案进行模拟分析的基础上，开展吊篮的强度性能研究，对吊篮结构的整体布局、主要部件强度考核和降低局部应力集中等多方面开展计算分析。结果在指定工况下吊耳与配重板之间的局部接触导致的应力集中，致使安全系数达不到强度要求。结论提出改进措施，改进设计后的吊篮结构强度得到了较大的提高，满足吊篮设计的强度要求。
목적：연구조람재리심재하하적역학행위，우기시강도화강도성능。방법통과정세화모의조람계통각부건간적접촉관계，재대모리심궤조람초시설계방안진행모의분석적기출상，개전조람적강도성능연구，대조람결구적정체포국、주요부건강도고핵화강저국부응력집중등다방면개전계산분석。결과재지정공황하조이여배중판지간적국부접촉도치적응력집중，치사안전계수체불도강도요구。결론제출개진조시，개진설계후적조람결구강도득도료교대적제고，만족조람설계적강도요구。
ABSTRACT:Objective To study mechanical behaviors of the suspended basket, especially the strength and stiffness performance under the centrifugal loading. Methods By precisely modelling the contact relations between parts of the basket, the present paper established a finite element model based on an initial design of centrifuge baskets. Special emphasis was placed on a systematic study of the strength property of centrifuge baskets. Calculation and analysis were performed to check the overall structure, the strength of key parts and the reduction of local stress concentration. Results Certain stress concentration existed due to local contact between the lifting lug and the bob-weight, leading to the result that the safety parameters failed to meet requirement on strength. Conclusion An improved design is provided with higher structual strength, which satisfies the corresponding mechanical strength requirements.