摘要
以亚麻纤维为增强纤维、聚乳酸(PLA)树脂为基体制成不同编织角的三维编织复合材料,运用软件ABAQUS对模型弯曲性能进行数值模拟研究,分析模拟过程中纤维增强体和基体的应力分布;用万能试验机进行三点弯曲实验,研究材料的准静态三点弯曲行为。比较仿真和实验数据,结果显示:不同编织角的弯曲应力曲线趋势变化较接近,且在一定范围内,随着编织角度的逐渐增大,复合材料的弯曲强度及模量逐渐减小。将实验结果与有限元分析进行比较,验证了该有限元模型的正确性。
A three dimensional braided composite material with different braiding angles was prepared by applying flax fiber as reinforcing fiber and polylactic acid （PLA） resin as matrix. The numerical simulation of the bending behavior of the model was carried out by using ABAQUS to analyze the stress distribution of the material fiber reinforcement and matrix during the experimental simulation. A universal testing machine was used for three point bending experiment to study the quasi static three point bending behavior of the material. The comparison of simulation and experimental data showed that the bending stress curve trends of different braiding angles are close to each other, and within a certain range; as the braiding angle increases, the bending strength and modulus of the composite material gradually decrease. The meta analysis results were compared with the experimental results to verify the correctness of the te element model.
作者
胡慧
刘宜胜
陈辽开
HU Hui;LIU Yisheng;CHEN Liaokai(Faculty of Mechanical Engineering ＆ Automation,Zhejiang Sci-Tech University,Hangzhou 310018,China)
出处
《浙江理工大学学报（自然科学版）》
2018年第6期703-708,共6页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
浙江省自然科学基金项目(LY18E050018)
国家自然科学基金项目(51705466)
关键词
三维编织
亚麻纤维
数值模拟
编织角
弯曲应力
three dimensional braiding
flax fiber
numerical simulation
braiding angles
bending stress
