摘要
针对以往复合固体推进剂非线性本构模型中积分项多、本构参数难获取的问题,从朱-王-唐非线性本构模型出发,将本构模型表示为弹性项和粘性项之和的形式,并提出了基于松弛实验和拉伸实验的本构模型建模方法;完成了松弛实验和拉伸实验的数值仿真,并结合单向拉伸实验数据对本构模型进行了验证,仿真结果与实验数据的相对偏差不超过15%。对贴壁浇注固体火箭发动机硫化降温过程进行了数值仿真,并通过与实验数据的对比,表明本构模型的仿真精度较高。
Based on the Zhu-Wang-Tang nonlinear constitutive model,which is expressed as the sum of the elastic term and the viscous term, aiming at the problems of several integral items and difficulty in obtaining constitutive parameters in the existing non- linear constitutive model.The constitutive model is established by the relaxation and uniaxial tensile experimental data.The numerical simulations of relaxation and tensile experiment are carried out to verify the constitutive model by comparing with the experimental data.The relative deviation between numerical simulation and experimental data is less than 15% .The process of Vulcanization cool-ing of a case-bonded casting SRM is simulated.Compared with the experimental data, the result shows that the constitutive model has a pretty good simulation precision.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2018年第1期11-17,共7页
Journal of Solid Rocket Technology
