CHINESE JOURNAL OF ENERGETIC MATERIALS
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基于DIC技术的固体火箭发动机装药粘接界面参数反演研究
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1.海军航空大学, 山东 烟台 264001;2.91468部队, 海南 陵水 572400;3.91526部队, 广东 湛江 524000

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基础加强领域基金(2019061)


Parameters Inversion of Adhesive Interface of Solid Rocket Motor Based on DIC Method
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1.Naval Aviation University,Yantai 264001,China;2.Unit 91468 of PLA, Lingshui 572400, China;3.Unit 91526 of PLA, Zhanjiang 524000, China

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    摘要:

    针对传统实验法无法精准获取粘接界面内聚力模型参数问题,采用数字图像相关技术结合Hooke-Jeeves优化算法的反演识别方法,基于固体火箭发动机矩形粘接试件拉伸实验结果,对粘接界面所采用的双线性内聚力模型的相关参数开展反演研究。反演结果表明:拉伸速率为5 mm·min-1时,最大粘接强度、模量、失效断裂能分别为0.55 MPa、0.57 MPa、2.26 kJ·m-2。仿真与实测应力-应变曲线的相对误差由初始44.7%修正为4.3%,拉伸应变为0.05、0.08时,仿真与实测的感兴趣区域最大位移误差分别为0.64 mm、1.76 mm,平均位移误差分别为0.38 mm、0.45 mm,以上误差结果均表明该反演识别方法的精度较高,建立的内聚力模型可以用于表征粘接界面的真实本构关系。

    Abstract:

    Aiming at the problem that the cohesive zone model parameters, describing the mechanical properties of the adhesive interface, which can′t be obtained by traditional experimental method accurately,the inversion research on the relevant parameters of bilinear cohesive zone model used for the adhesive interface is carried out by using the digital image correlation method and Hooke-Jeeves optimization algorithm based on the tensile test results of solid rocket motor rectangular adhesive specimens. The inversion results show that the maximum adhesive strength, modulus and failure fracture energy are 0.55 MPa, 0.57 MPa and 2.26 kJ·m-2, respectively, when the tensile rate is 5 mm·min-1. The relative error of simulated and measured stress-strain curves is corrected from 44.7% to 4.3%. When the tensile strain is 0.05 and 0.08, the maximum displacement errors of simulated and measured region of interest is 0.64 mm and 1.76 mm, respectively, and the average displacement errors of simulated and measured region of interest is 0.38 mm and 0.45 mm, respectively. The validation results indicate that the accuracy of the inversion identification method is high enough and the established cohesive zone model can be used to characterize the mechanical properties of the adhesive interface.

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引用本文

肖云东,王玉峰,李高春,等.基于DIC技术的固体火箭发动机装药粘接界面参数反演研究[J].含能材料, 2022, 30(11):1090-1098. DOI:10.11943/CJEM2022174.
XIAO Yun-dong, WANG Yu-feng, LI Gao-chun, et al. Parameters Inversion of Adhesive Interface of Solid Rocket Motor Based on DIC Method[J]. Chinese Journal of Energetic Materials, 2022, 30(11):1090-1098. DOI:10.11943/CJEM2022174.

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  • 收稿日期: 2022-06-29
  • 最后修改日期: 2022-09-07
  • 录用日期: 2022-08-30
  • 在线发布日期: 2022-08-31
  • 出版日期: 2022-11-25