摘要
针对线性非共振式振动干燥机工程上存在的问题,提出应用非线性振动理论,将其改进为非线性近共振双质体振动干燥机,简述了其工作原理,分析筛板可能承受系统突加载荷作用下的最大横向力,进行板簧曲面屈曲变形分析。研究表明:考虑物料粘度随温度而变化以及粒度不均匀性等因素而产生的突加载荷是正确的;板簧曲面由此发生屈曲变形而导致筒体的横向失稳是可能的。基于ANSYS软件建立了分析模型,解得板簧曲面各阶屈曲变形,可有效保障系统的稳定与安全。
Aiming at the existing problems of the linear non-resonance vibrator dryer used in projects, the nonlinear nearby resonance double-mass vibrator dryer is applied. Following the introduction of the working principle, this paper analyzed the maximum transverse force of sieve plate on vibrator dryer when suffering sudden load of system, and performed finite element analysis of buckling deformation of leaf spring curved surface. The study shows that it is correct to consider the sudden load generated by the factors such as the material viscosity with temperature change and the heterogeneity of granularity. It is possible that transverse destabilization of the canister occurs when the buckling deformation of leaf spring suffers an action of lateral force from a sudden load. Finite element models based on the ANSYS software were established to analyze the stress of leaf spring. By investigating the physical response and the stress distribution, the buckling deformation of leaf spring in every step was solved. The above model can be widely used in the stability and the security of the system.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2009年第12期84-87,共4页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(50375067)
江苏省高校科研成果产业化推进项目(09520077)
南京工程学院科研创新基金项目(200901014)
南京工程学院大学生科研基金资助项目(NB200701003)
关键词
振动干燥机
板簧曲面
屈曲变形
失稳
优化
Vibrator dryer
Leaf spring curved surface
Buckling deformation
Destabilization
Optimization
