【摘要】 本文采用聚合物加工理论和有限元方法,建立了聚合物异型材挤出模拟的有限元模型,模拟了聚合物T型材挤出成型过程,获得了聚合物熔体在模具内的速度场、温度场、压力场和应力场分布,分析了模拟结果对成型过程的影响,预测了成型过程中可能出现的缺陷,给出了模具和工艺设计的合理化建议。模拟结果揭示了聚合物T型材挤出成型过程的一般规律,对于模具和工艺设计具有直接的指导作用;所建立的数学方法和获得的模拟结果对于聚合物异型材挤出具有通用的指导意义。更多还原

【Abstract】 Based on the theory of polymer process and finite element method,the FEM model of polymer profile extrusion was present in this paper.The polymer extrusion process with "T" profile was simulated,and the velocity,temperature,pressure and stress filed was obtained.The influence for process by simulation result was analyzed,and the possible deficiency was forecasted.The rational suggestion for die and process design was given.Simulation results describe the common extrusion process regularity with "T" profile,and can direct die and process design.The mathematic model and simulation results have general direct interesting for polymer profile extrusion process.更多还原