Modeling of AP-HTPB solid propellant viscoelastic behavior using Modified Maxwell model
Year: 2026
Type: article
Abstract: This research explores the viscous effects present in heterogeneous solid propellants through experimental analysis. The uniaxial tensile tests were conducted at constant strain rate, and the relaxation tests were conducted at different strain levels and temperatures. The viscoelastic behavior of this material was confirmed on the basis of the experimental data. By using the Modified Maxwell model, a mathematical formula was generated to identify the viscoelastic behavior based on Prony series, then the material parameters of the constitutive model are determined numerically by using MATLAB software. High agreement between the calculation results and the experimental results was found, with a maximum error of approximately 5.35%. Finally, numerical modeling of the relaxation tests was conducted to simulate the stress relaxation behavior of the AP-HTPB composite solid propellant by using the ANSYS program, and the maximum difference between the numerical and experimental results was 6.47%.
Source: Discover Materials
Authors: Ahmed Elsabbagh, Ahmed F. Nour Eldin, Walid Mohmed Adel
Institution: Ain Shams University
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,590
OpenAlex ID: W7126211341