Abstract:

The heat transfer within seams bounded by a thermowelding machine is analysed as a transient problem, i.e. time- and space-dependent. The physical model determines a multilayer textile composite made of connected fabrics and also it presents the material homogenisation. The mathematical model introduces a state differential equation accompanied by a set of boundary and initial conditions. The problem can be solved numerically and visualised by means of the graphical modulus of the ADINA program. Temperature maps are shown for the diversified temperatures of the machine head on the upper surface of the seam as well as the different time steps.