农业机械学报
農業機械學報
농업궤계학보
TRANSACTIONS OF THE CHINESE SOCIETY OF AGRICULTURAL MACHINERY
2009年
12期
84-87
,共4页
振动干燥机%板簧曲面%屈曲变形%失稳%优化
振動榦燥機%闆簧麯麵%屈麯變形%失穩%優化
진동간조궤%판황곡면%굴곡변형%실은%우화
Vibrator dryer%Leaf spring curved surface%Buckling deformation%Destabilization%Optimization
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.
針對線性非共振式振動榦燥機工程上存在的問題,提齣應用非線性振動理論,將其改進為非線性近共振雙質體振動榦燥機,簡述瞭其工作原理,分析篩闆可能承受繫統突加載荷作用下的最大橫嚮力,進行闆簧麯麵屈麯變形分析.研究錶明:攷慮物料粘度隨溫度而變化以及粒度不均勻性等因素而產生的突加載荷是正確的;闆簧麯麵由此髮生屈麯變形而導緻筒體的橫嚮失穩是可能的.基于ANSYS軟件建立瞭分析模型,解得闆簧麯麵各階屈麯變形,可有效保障繫統的穩定與安全.
침대선성비공진식진동간조궤공정상존재적문제,제출응용비선성진동이론,장기개진위비선성근공진쌍질체진동간조궤,간술료기공작원리,분석사판가능승수계통돌가재하작용하적최대횡향력,진행판황곡면굴곡변형분석.연구표명:고필물료점도수온도이변화이급립도불균균성등인소이산생적돌가재하시정학적;판황곡면유차발생굴곡변형이도치통체적횡향실은시가능적.기우ANSYS연건건립료분석모형,해득판황곡면각계굴곡변형,가유효보장계통적은정여안전.
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.