Abstract: The thermalstructure analysis for barrel of twin screw extruder was carried out using ANSYS software. The thermal deformation of three barrel and initial barrel was compared. It was concluded that increasing the thickness of the barrel or changing the channel could decrease the barrel deformation. On the base of single barrel deformation, the associated deformation influenced by temperature difference between neighbor barrels was analyzed. All the results had certain significances in studying whole barrel deformation of twin screw extruder.

Key words: finite element method, twin screw extruder, barrel design