摘要
蒸馏塔为石化行业重要的分离设备,结构整体或者局部屈曲分析用以满足薄壁塔体稳定性设计需求,以蒸馏塔运行期间的热变形及热应力屈曲变化为研究对象,采用有限元分析软件ANSYS Workbench14.0,考虑了内压、外载荷及热-结构耦合作用产生的结构几何、材料非线性,分析模型采用极限载荷法,对蒸馏塔进行了热效应下的非线性稳定性设计校核,分析结果表明结构稳定性对热载荷是敏感的,进而确定了蒸馏塔失稳后的形态及其极限承载能力,该方法为蒸馏塔热-结构耦合的稳定性设计提供参考与借鉴。
Distillation tower is important separation equipment in the petrochemical industry, for meeting the design stability of thin-wall tower body, and the structure overall or local buckling analysis is required. Due to the thermal deformation and thermal stress during the device operation leading to the structural buckling, the nonlinear buckling analysis of chemical distillation tower as the research object is represented. Using finite element analysis software ANSYS Workbenchl4.0, taking into account the geometric and material nonlinear behavior subject to the thermal loads, internal pressure, external loads, the thermal-struetural coupling model is established, the extreme load method is applied for calculating the nonlinear stability of distillation tower. The analysis results indicate the structural stability is sensitive to thermal loads, and thus the ultimate bearing capacities of the structure and instability mode are determined. This method provides a reference and basis for the stability design of chemical distillation tower.
出处
《机械设计与制造》
北大核心
2014年第11期75-78,共4页
Machinery Design & Manufacture
基金
江苏省淮安市科技支撑计划(工业)(HAG2013047)
关键词
蒸馏塔
稳定性设计
热效应ANSYS
非线性屈曲
极限承载能力
Distillation Tower
Stability Design
Thermal Effect
ANSYS
Nonlinear Buckling
Ultimate Bearing Ca-pacity
