Long-Term Creep Prediction of NEPE Propellant Based on SSM Method

被引:0
|
作者
Zhang, Yuxuan [1 ,2 ]
Deng, Kuangwei [1 ,2 ]
Shen, Zhibin [1 ,2 ]
机构
[1] Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Peoples R China
[2] Natl Univ Def Technol, Hunan Key Lab Intelligent Planning & Simulat Aeros, Changsha 410073, Peoples R China
基金
中国国家自然科学基金;
关键词
constitutive model; creep; NEPE propellant; SSM; visco-elastic-plastic;
D O I
10.1002/prep.202400159
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Throughout the entire operational lifespan of a solid rocket motor, the propellant grain experiences creep due to gravitational forces, potentially influencing the motor ' s reliability. To enhance the efficiency of creep tests for solid propellants, short-term (3000 seconds) creep tests were conducted on nitrate ester plasticized polyether (NEPE) propellant at stress levels of 0.15 MPa, 0.20 MPa, 0.25 MPa, and 0.30 MPa using both the step stress method (SSM) and the conventional constant creep test (CCT). Furthermore, mid-term (10000 seconds) and long-term (7 days) creep tests were conducted. Based on the traditional generalized Kelvin model, the Saint-Venant body was incorporated to derive a visco-elastic-plastic model with overstress considered, and constitutive model parameters were determined through data fitting. The findings demonstrate the efficacy of the constitutive model in well characterizing propellant creep behavior. According to the model, the yield stress of NEPE propellant was determined to be 0.2302 MPa, representing a significant 64.03% reduction compared to its design strength. This insight holds relevance for structural integrity analysis and the evaluation of solid motor storage life. image
引用
收藏
页数:9
相关论文
共 50 条
  • [31] Prediction of long-term creep features of a supported expressway slope
    Jianhui Dong
    Long Li
    Qiu Mao
    Jianjun Zhao
    Qihong Wu
    Feihong Xie
    Arabian Journal of Geosciences, 2020, 13
  • [32] PREDICTION AND EVALUATION OF LONG-TERM CREEP-FATIGUE LIFE
    YAMAGUCHI, K
    NISHIJIMA, S
    FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1986, 9 (02) : 95 - 107
  • [33] LONG-TERM CREEP CURVE PREDICTION BASED ON THE MODIFIED THETA-PROJECTION CONCEPT
    MARUYAMA, K
    TANAKA, C
    OIKAWA, H
    JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME, 1990, 112 (01): : 92 - 97
  • [34] A COMPARISON OF EXTRAPOLATION TECHNIQUES FOR LONG-TERM CREEP STRAIN AND CREEP LIFE PREDICTION BASED ON EQUATIONS DESIGNED TO REPRESENT CREEP CURVE SHAPE
    BROWN, SGR
    EVANS, RW
    WILSHIRE, B
    INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 1986, 24 (03) : 251 - 268
  • [35] Concrete Creep Analysis Method Based on a Long-Term Test of Prestressed Concrete Beam
    Yang, Mingfang
    Jin, Song
    Gong, Jinxin
    ADVANCES IN CIVIL ENGINEERING, 2020, 2020
  • [36] Long-term creep prediction for a PC bridge with stiffened steel truss based on field testing
    Sun, Yuehan
    Zhan, Yulin
    Li, Peng
    Li, Zhilun
    Li, Yingxiong
    Zhang, Zhiqiang
    ADVANCES IN STRUCTURAL ENGINEERING, 2025,
  • [37] Taylor Series-Based Long-Term Creep-Life Prediction of Alloy 617
    Yin, Song-Nan
    Kim, Woo-Gon
    Park, Jae-Young
    Kim, Soen-Jin
    Kim, Yong-Wan
    TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A, 2010, 34 (04) : 457 - 465
  • [38] Prediction of creep strain of the expanded polystyrene (EPS) in long-term compression
    Vaitkus, Saulius
    Gnip, Ivan
    Kersulis, Vladislovas
    Vejelis, Sigitas
    MATERIALS SCIENCE-MEDZIAGOTYRA, 2007, 13 (04): : 293 - 298
  • [39] Prediction of Graphitization Behavior during Long-Term Creep in Carbon Steels
    Hatakeyama, Tomotaka
    Sekido, Kaoru
    Sawada, Kota
    ISIJ INTERNATIONAL, 2023, 63 (05) : 910 - 918
  • [40] Prediction of creep and long-term strength of materials under anisothermic deformation
    Kucher, N. K.
    Prikhod'ko, R. P.
    Borovik, O. V.
    STRENGTH OF MATERIALS, 2013, 45 (01) : 93 - 101