摘要
为解决硬质夹层三明治结构复合材料预制体自动化缝合问题,根据改进Tufting缝合工艺,确定缝合头机构、缝合头工作条件设计参数;对缝合头的缝合机构进行图解简化分析,获得参数初始值以及边界值;基于机械系统动力学(ADAMS)自动分析软件建立缝合机构参数化虚拟样机,以最大压力角最小值为目标函数求解缝合头最终参数,并对求解所得参数进行仿真分析与验证。结果表明:基于ADAMS参数化设计方法提升了硬质夹层三明治结构预制体缝合头参数的计算效率及精度;仿真结果表明缝合头缝合过程稳定,可减少缝合过程中因加速度突变产生的冲击导致缝合线断纱的现象,满足工作设计要求;可为后续工程样机研制奠定理论基础。
In order to solve the problem of yam breakage when using Tufting stitching process to stitch hard sandwich composite preforms,the stitching process was improved,and the stitching head was designed parametrically based on the improved Tufting stitching process.Firstly,the suturing mechanism of the suturing head is graphically simplified and analyzed,and the parameters are designed through the given working conditions of the process to obtain the structure of the suturing mechanism,the initial values of the parameters are calculated by the analytical method,and the boundary values of the parameters are calculated.The theoretical simulation analysis of the parameters is performed using Matlab.The results show that the relevant parameters calculated by the analytical method do not meet the design requirements.Based on the problems in the calculation of the parameters by the analytical method,a parametric virtual prototype is established using ADAMS,and the parametric modeling is performed to obtain a better value.Finally,the simulation analysis and verification of the obtained parameter values are carried out,and a virtual prototype and a processing entity prototype are established.The experimental results prove that the parametric design of the suture head runs stably,reduces the yarn breakage of the suture thread,meets the requirements of the work design,and lays a theoretical foundation for the development of subsequent engineering prototypes.
作者
林东
董九志
陈云军
蒋秀明
LIN Dong;DONG Jiu-zhi;CHEN Yun-jun;JIANG Xiu-ming(School of Mechanical Engineering,Tiangong Lniversity,Tianjin 300387,China;Advanced Mechatronics Equipment Technology Tianjin Area Major Laboratory,Tiangong University,Tianjin 300387,China;School of Electrical Engineering and Automation,Tiangong University,Tianjin 300387,China)
出处
《复合材料科学与工程》
CAS
北大核心
2021年第6期94-101,共8页
Composites Science and Engineering
