2022
DOI: 10.1038/s41598-022-22726-8
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Biaxial tensile test and meso damage numerical simulation of HTPB propellant

Abstract: Aiming at the shortcomings of the current research on the mechanical properties of solid propellants under complex stress conditions, an effective cross-shaped test piece configuration and variable-scale biaxial tensile test method are designed in this paper, and the meso-simulation model of propellant is constructed by Micro-CT test and random filling algorithm. Then, based on the Hook-Jeeves method and the cohesive force model, the mechanical performance parameters of each mesoscopic component were obtained,… Show more

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Cited by 8 publications
(1 citation statement)
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“…Its structural integrity determines the reliable operation and storage life of SRMs [ 1 , 2 ]. Throughout the life cycle of an SRM, the propellant grain must withstand various types of loads, including temperature, gravity, vibration, ignition impact, and axial overload, among others [ 3 , 4 , 5 ]. These loads can cause complex physical and chemical changes in the internal structure of the propellant grain over time [ 6 ], ultimately leading to an uneven distribution of the mechanical properties of the propellant grain.…”
Section: Introductionmentioning
confidence: 99%
“…Its structural integrity determines the reliable operation and storage life of SRMs [ 1 , 2 ]. Throughout the life cycle of an SRM, the propellant grain must withstand various types of loads, including temperature, gravity, vibration, ignition impact, and axial overload, among others [ 3 , 4 , 5 ]. These loads can cause complex physical and chemical changes in the internal structure of the propellant grain over time [ 6 ], ultimately leading to an uneven distribution of the mechanical properties of the propellant grain.…”
Section: Introductionmentioning
confidence: 99%