基于自动铺放技术的变刚度复合材料层合板固化变形特性  

Process-induced deformation characteristics of variable stiffness composite laminates based on automatic placement technology

作　　者：卫宇璇 张明[2] 刘佳 路明雨 张鑫 李波 李笑 WEI Yuxuan;ZHANG Ming;LIU Jia;LU Mingyu;ZHANG Xin;LI Bo;LI Xiao(Beijing Spacecraft,Beijing 100094,China;China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]北京卫星制造厂有限公司,北京100094 [2]中国空间技术研究院,北京100094

出　　处：《复合材料学报》2022年第5期2460-2469,共10页Acta Materiae Compositae Sinica

基　　金：装备预研共用技术项目(41422060101)。

摘　　要：准确预测和控制变刚度结构的固化变形是合理进行变刚度设计的关键环节,复合材料结构的固化变形不仅会影响结构的刚度强度特性、同时会对结构的装配性能产生影响。基于自动铺放技术,提出面向过程的丝束-路径-面板多级三维变刚度有限元模型算法。结合Kamal自催化固化动力学模型和广义Maxwell黏弹性本构模型进行热-化学-力多场耦合分析,计算固化过程中结构内部温度场、固化度场和残余应力场的变化,最终得到变刚度层合板的固化变形特性。通过参数化分析,研究了自动铺放过程中轨迹控制参数T_(0)、T_(1)和覆盖法则对结构固化变形产生的影响。研究结果表明:T_(0)=45°时,当T_(1)<T_(0)变刚度结构的固化变形随着T_(1)的增大而增大,当T_(1)>T_(0),变刚度结构的固化变形随着的增大而减小。100%覆盖法则有效减小结构的固化变形,而0%覆盖法则使固化变形增大。本文提出的方法可以有效预测工艺参数对变刚度结构固化变形的影响。Accurately predicting and controlling the process-induced deformation of a variable stiffness structure is a key to obtain a reasonable variable stiffness design,the process-induced deformation of a composite structure will not only affect the stiffness and strength of the structure,but also affect the assembly performance of the structure.Based on the automatic placement technology,a process-oriented tow-course-panel multi-level three-dimensional variable stiffness finite element model algorithm was proposed.Combining the Kamal autocatalytic reaction curing kinetic model and the generalized Maxwell viscoelastic constitutive model for thermo-chemical-mechanical multifield coupling analysis,the changes in the internal temperature field,curing degree field and residual stress field of the structure during the curing process were calculated,and the curing deformation of the variable stiffness structure was finally obtained.The results show that:when T_(0)=45°,T_(1)<T_(0),the curing deformation of the variable stiffness structure increases with the increase of T_(1).When T_(1)>T_(0),the curing deformation of the variable stiffness structure decreases with the increase of T_(1).The 100%coverage rule effectively reduces the curing deformation of the structure,while the 0%coverage rule increases the curing deformation.The method proposed in this paper can effectively predict the effect of process parameters on the process-induced deformation of variable stiffness structures.

关 键 词：变刚度 多级三维有限元模型 固化变形 自动铺放 黏弹性本构模型 

分 类 号：TB332[一般工业技术—材料科学与工程]