Determine the temperature of an ABS P400 filament in fused deposition modeling process(FDM) after the filament is extruded with lenght 0.15 m. The surrounding temperature and initial temperature of the filament are 343.15 k and 533.15k repectively. Thermal conductivity , convective heat transfer coefficient and specific heat of the ABS filament are 0.177 W/m.k, 30 W/m.k and 2080 j/kg.k respectively. The density of the ABS filament is 1050 kg/m. The filament has the ellipse cross-section with the major and minor radius of 0.2 and 0.1 mm respectively. The tool-path velocity of the extrusion head is 0.01m.