To investigate the characterization of the mechanical properties of composite solid propellant (CSP) based on hydroxyl-terminated polybutadiene (HTPB) at different temperatures and strain rates, uniaxial tensile tests were conducted over a range of temperatures -60 °C to +76 °C and strain rates 0.000164 to 0.328084 s^{-1 <\/sup>using a conventional universal testing machine. From the experimental data, it can be noted that the mechanical properties of AP\/HTPB propellant are mainly dependent on the applied strain rate and the temperature condition. The stress-strain responses exhibited an initial yielding followed by the viscoelastic phase, which was strongly affected by the strain rate and temperature. It was found that the mechanical properties increased with both increasing strain rate and decreasing temperature. Based on the experimental tests, the master curves of the tensile properties are drawn using predetermined shift factor and the results were discussed. This work is a first step in preliminary investigation the nonlinear viscoelasticity behavior of CSP.<\/p>\r\n","references":"[1]\tFarris J N, R A Schapery. Development of a solid rocket propellant nonlinear viscoelastic constitutive theory, 1973, AFRPL-TR-73-50.\r\n[2]\tR A Schapery. Nonlinear Viscoelastic and Viscoplastic Constitutive Equations Based on Thermodynamics. Mechanics of Time-Dependent Materials, 1997, 1: 209-240.\r\n[3]\tR A Schapery. Nonlinear viscoelastic and viscoplastic constitutive equations with growing damage. International Journal of Fracture, 1999, 97:33-66.\r\n[4]\tR M Hinterhoelzl, R A Schapery. FEM Implementation of a Three-Dimensional Viscoelastic Constitutive Model for Particulate Composites with Damage Growth. Mechanics of Time-Dependent Materials, 2004, 8:65-94.\r\n[5]\tSebnem \u00d6z\u00fcpek, Eric B. Becker. Constitutive equations for solid propellants, Journal of 15 Engineering Materials and Technology, 1997, 119:125-132.\r\n[6]\tGyoo-Dong Jung, Sung-Kie Youn, et al. A nonlinear viscoelastic constitutive model of solid propellant. International Journal of Solids and Structures, 1999, 36: 3755-3777.\r\n[7]\tGyoo-Dong Jung, Sung-Kie Youn, et al. A three-dimensional nonlinear viscoelastic constitutive model of solid propellant. International Journal of Solids and Structures, 2000, 37: 4715-4732.\r\n[8]\tChyuan Shiang-Woei. Nonlinear thermoviscoelastic analysis of solid propellant grains subjected to temperature loading. Finite Elements in Analysis and Design, 2002, 38(7): 613-630.\r\n[9]\tChyuan Shiang-Woei. Dynamic analysis of solid propellant grains subjected to ignition pressurization loading. Journal of Sound and Vibration, 2003, 268(3): 465-483.\r\n[10]\tChyuan Shiang-Woei. Studies of Poisson\u2019s ratio variation for solid propellant grains under ignition pressure loading, International Journal of Pressure Vessels and Piping, 2003, 80(12): 871-877.\r\n[11]\tMatou\u0161 K, Inglis H M, et al. Multiscale modeling of solid propellants: From particle packing to failure. Composites Science and Technology. 2007, 67(7): 1694-1708.\r\n[12]\tXu F, Aravas N, et al. Constitutive modeling of solid propellant materials with evolving microstructural damage. Journal of the Mechanics and Physics of Solids, 2008, 56(5): 2050-2073.\r\n[13]\t Nevi\u00e8re Robert. An extension of the time\u2013temperature superposition principle to non-linear viscoelastic solids. International Journal of Solids and Structures, 2006, 43(17): 5295-5306.\r\n[14]\tD. Alain, Solid Rocket Propulsion Technology, English Edition, New York, Pergamon Press, ISBN 0-08-040999-7,1993, Chapter 6.\r\n[15]\tWalid M. Adel, LIANG G. Different Methods for Developing Relaxation Modulus Master Curves of AP-HTPB Solid Propellant. Chinese journal of energetic materials 2017;25(10):810-6.\r\n[16]\tWalid. M. Adel, H. Kamal, D. El-Soualey, \u201cExperimental determination of some design properties of viscoelastic solid propellant using uniaxial tensile test\u201d, 14th International Conference on Aerospace Sciences &Aviation Technology, 2011.\r\n[17]\tF. C. Francis, C. H. Carlton, \u201cSome Aspect of non-linear Mechanical Behavior of a Composite Propellant\u201d, J. Spacecraft and rockets, vol. 6 , No.1, January 1969, pp. 65-69.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 132, 2017"}}