Warning: The compressed Excel files shown below contain macros. These macros are needed for solving the viscoelastic differential equations.For a proper execution of the spreadsheets macros have to be enabled in Excel.

Viscoelastic properties polymers V20261101: This is an Excel-based simulation tool for studying the time-, temperature-, and deformation-dependent behavior of polymeric materials. The program combines tensile testing, DMA analysis, viscosity modeling, stress relaxation, recovery, and fracture behavior within a unified framework. A built-in material database includes both amorphous and semi-crystalline polymers, making the software useful for education, research, and engineering applications.

Viscoelastic flow behavior V20190712: This spreadsheet is an engineering calculation tool for analyzing the viscoelastic flow behavior of PVC melt during extrusion. It predicts key processing and product parameters such as pressure drop, shear and strain rates, melt temperature rise, die swell, weld-line quality, and flow development along the die and calibration section. The model allows users to evaluate the influence of die dimensions, fillers, foaming conditions, and processing settings on extrusion performance and product quality. It is particularly useful for engineers, researchers, and students interested in polymer rheology and extrusion technology.