检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:宁蕙 黄建栋[1,2] 谭志勇[1] 张宏宇[1] 龚世秋 NING Hui;HUANG Jiandong;TAN Zhiyong;ZHANG Hongyu;GONG Shiqiu(Science and Technology on Space Physics Laboratory,China Academy of Launch Vehicle Technology,Beijing 100076,China;School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China)
机构地区:[1]中国运载火箭技术研究院空间物理重点实验室,北京100076 [2]北京航空航天大学航空科学与工程学院,北京100191
出 处:《材料工程》2024年第12期111-121,共11页Journal of Materials Engineering
基 金:国家自然科学基金资助项目(U20B2002)。
摘 要:柔性纺织复合材料因具有柔韧性和可折展特性在变构型飞行器的应用中获得越来越多的关注,然而其力学性能仍有很大的不确定性。对石英纤维/硅橡胶柔性纺织复合材料进行5种偏轴角度的单轴拉伸实验,研究其单轴拉伸力学行为。针对石英纤维脆性强和硅橡胶涂层柔韧性强的特点,建立一种石英纤维/硅橡胶柔性复合材料的超弹性本构模型,将应变能密度函数解耦为经向、纬向的拉伸应变能密度函数以及将硅橡胶拉伸与纤维剪切耦合的应变能密度函数,基于单轴拉伸实验数据确定模型参数,与偏轴拉伸实验结果对比表明超弹性本构模型对面内拉伸行为预测误差小于3.88%。针对变构型飞行器中膜材柔性、可大变形的特点采用一种圆形膜材气压加载实验验证方法,可向柔性复合材料的膜面均匀施加载荷,并通过有限元软件Abaqus的用户子程序UANISOHYPER_INV实现所采用的超弹性本构模型,仿真数据与实验数据误差小于2.9%,表明所建立的超弹性本构模型对石英纤维/硅橡胶柔性复合材料的力学表征和数值仿真均具有良好的适用性。Flexible textile composite materials have received increasing attention in the application of variable configuration aircraft due to their flexibility,and foldable and unfoldable properties.However,there are still great uncertainties about their mechanical properties.Uniaxial tensile experiments with five off-axial angles were conducted to study the uniaxial tensile mechanical behaviors of a quartz fiber/silicone rubber flexible textile composite material.A hyperelastic constitutive model was established based on the characteristics of the brittleness of quartz fiber and the toughness of silicone rubber,and the strain energy density function was decoupled into the strain energy density functions from fiber elongations along the warp and weft yarns direction,and the strain energy density function coupling silicone rubber elongation and fiber shear.The model parameters were determined based on the uniaxial tensile test data.Comparison with the results of off-axis tensile test shows that the prediction error of the hyperelastic constitutive model for the in-plane tensile behavior is less than 3.88%.According to the flexible and deformable characteristics of the quartz fiber/silicone rubber flexible textile composite material,a circular membrane pneumatic loading test verification method is adopted,which can uniformly apply load to the membrane surface.The proposed hyperelastic constitutive model is realized by the user subroutine UANISOHYPER_INV of the finite element software Abaqus,and the error between simulation data and experimental data is less than 2.9%,indicating that the established hyperelastic constitutive model has good applicability for mechanical characterization of the quartz fiber/silicone rubber flexible textile composite material.
关 键 词:石英纤维 硅橡胶 柔性纺织复合材料 单轴拉伸 超弹性本构模型 气压加载实验 各向异性
分 类 号:TB332[一般工业技术—材料科学与工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.198