摘要
通过ANSYS面-面接触单元模拟真空炉快开装置的齿啮接触过程,得到上法兰受力特性和应力分布规律。结果表明在齿根处出现最大应力,球形封头和罐盖法兰过渡处薄膜应力最大。对球形封头进行优化设计,确定球形封头最优厚度14 mm,分析上法兰最大应力变化得出pw≤2.2 MPa。分析过程和计算结果为试验和生产制造提供一定的参考和依据。
A numerical simulation was performed of the contact behavior between the teeth of the tooth-locked quick open-closure device of vacuum furnace using a face to face contact model in the contact unit method of ANSYS.The carrying load and the stress distribution of the tank cover flange are revealed.The results show that the maximum stress emergence in the tooth root and the membranes stress is absolute larger at the transition part between the spherical head and the tank cover flange.The mechanical optimum design of the spherical head based on numerical calculation is carried out.The optimum thickness of the head is determined satisfying the strength requirement.By analyzing the maximum stress the maximum working pressure is below 2.2MPa.The stress estimation result shows that every stress value is in the allowable range.Simulation analysis and calculation results offer some reference and basis for a test and manufacture.
出处
《机械设计与制造》
北大核心
2012年第11期189-191,共3页
Machinery Design & Manufacture
基金
中央支持地方高校发展专项资金项目(2050205)
辽宁省自然科学基金项目(201102175)
辽宁省高等学校实验室重点科研计划项目(LS2010124)
关键词
快开结构
上法兰
有限元
应力评定
Quick Open-Closure Device
Upper Flange
Finite Element
Stress Evaluation
