文献类型：期刊文献

英文题名：Simulation of mechanical properties of HTPB-based propellant by a viscoelastic spring lattice model

作者：Xu, Zhuoran[1];Hu, Xu[1];Huang, Yongmin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：48

期号：10

外文期刊名：PROPELLANTS EXPLOSIVES PYROTECHNICS

收录：;EI(收录号：20233514641657);WOS:【SCI-EXPANDED(收录号:WOS:001055153500001)】；

基金：Fundamental Research Funds for the Central Universities, Grant/Award Number: 222201817001; Key Laboratory of Specially Functional Polymeric Materials and Related Technology of the Ministry of Education (East China University of Science and Technology)

语种：英文

外文关键词：dewetting; fracture development; HTPB-based solid propellant; mechanical properties; viscoelasticly modified lattice spring model

摘要：An improved lattice spring model extended by viscoelastic part using the Maxwell model was applied to predict the mechanical properties of HTPB-based solid propellants. The influence of both strain rate and temperature on the maximum elongation of HTPB-based propellants was quantitatively analyzed by simulating the uniaxial tensile test, as well as the process of crack development during tensile loads. The results show that the maximum elongation of HTPB-based propellant decreases as a power function along with the linear increase of strain rate. In contrast, the maximum stress increases as a power function. Increasing the temperature linearly, both the maximum stress and the maximum elongation decrease as a power function.