基于夹芯分层的碳纤维复材综框横梁仿真设计  

Design and simulation of carbon fiber composite crossbeam for heald frame based on sandwich layering

作　　者：邱海飞[1] QIU Haifei(Xijing University,Xi′an,710123,China)

机构地区：[1]西京学院,陕西西安710123

出　　处：《棉纺织技术》2023年第9期22-28,共7页Cotton Textile Technology

基　　金：陕西省教育厅专项科研计划资助项目(15JK2177);西京学院高层次人才专项基金资助项目(XJ20B09);西京学院横向课题资助项目(2019610002001915)。

摘　　要：为更好地适应现代织机的高速化发展要求,以一阶剪切变形理论为依据,将一种含夹芯分层的复材横梁应用于碳纤维综框技术升级。利用WorkBench/ACP模块开发复材横梁仿真模型,构建基于非对称纤维铺层的层压板设计方案,并通过配装铝合金板材对横梁结构进行强度加固。在考虑弹簧回综力和纱线张力影响的条件下,对复材横梁力学性能进行仿真分析。结果显示:复材横梁的自由振动模式以横向弯曲变形为主,应力集中区主要位于回综弹簧悬挂处;各纤维层的层间应力分布呈现一定对称性,靠近横梁两端区域的应力状态较为明显,而中间蜂窝芯材所受应力影响甚微;弹簧悬挂区各纤维层的失效顺序依次为0°、45°、-45°、90°;主应力S1是造成纤维层疲劳失效的主要因素。通过将夹芯分层与复材横梁结构设计相结合,有助于复合材料综框的轻量化实现与成本控制,为新型碳纤维综框的发展与性能提升提供了思路。To better adapt to the high-speed development requirements of modern loom,a composite crossbeam with sandwich lamination was applied to the technology upgrade of carbon fiber heald frame based on the first-order shear deformation theory.A simulation model of the composite crossbeam was developed by using WorkBench/ACP module.The laminate design scheme with asymmetric fiber laminates was constructed,the crossbeam was strengthened by assembling aluminum alloy plates.Under the influence of spring force and yarn tension,the mechanical property of the composite corssbeam was simulated and analyzed.The results showed that the free vibration mode of the composite crossbeam was mainly transverse bending deformation,and the stress concentration area was mainly located at the suspension of the return spring.The interlaminar stress distribution of each fiber layer presented a certain symmetry,and the stress state near the two ends of the crossbeam were more obvious,while the stress of the honeycomb core in the middle was slightly affected.Besides,the failure sequence of each fiber layer in the spring suspension area was 0°,45°,-45°,90°,and the main stress S1 was the important factor causing the fatigue failure of the fiber layer.The combination of sandwich layered and composite crossbeam structure design was conductive to the lightweight realization and cost control of the composite heald frame,and provided ideas for the development and performance improvement of new carbon fiber heald frame.

关 键 词：横梁 综框 层压板 纤维层 蜂窝芯材 

分 类 号：TS103.33[轻工技术与工程—纺织工程]