摘要
对机织复合材料的成形性研究文献进行综述.首先介绍了纺织复合材料的种类、力学和物理特性及其工业背景.接着,从实验、理论、计算3个方面概述了目前对平纹机织复合材料的成形性以及工业冲压技术研究的进展.对于平纹机织复合材料,剪切变形是最主要的变形形式,其本构关系具有非线性的特征.通过对材料样品纯剪切行为的观测,发现了相应的皱曲现象并引入了“锁定角”的概念.大量的实验研究了材料在工业冲压中的可能出现的变形模式及其对皱曲的影响.随后,从理论上介绍了对材料本构关系(包含了拉、压、剪)的系统性模拟,以及冲压过程中有限元数值计算方面的进展.材料的成形性还受到冲压温度、模具对材料的压力、模具与材料表面的摩擦等多种因素的影响.文章对这些问题的研究——作了简要的介绍,其中许多研究工作不仅得到了重要的结论,还开创了相关课题研究的先河,受到了人们的普遍关注.文章的最后,在总结前人成果的基础上讨论了今后的研究方向,并对该领域的发展作了展望.
This paper reviews the researches on the formability of woven textile composites. First, the categories of textile composites as well as their mechanical and physical properties are introduced. Then, the current researches on the formability of woven textile composites and the industrial stamping technique are summarized, including relevant experiments, theoretical models and computational methods. The shear deformation, as in a nonlinear constitutive relation, is the most principal deformation mode for plain woven textile composites. 'Wrinkling' has been observed and 'locking angle' is introduced during the pure shear deformation. Then, theoretical modeling of constitutive relations is presented, including tension, compression, shear, and so forth. Finite element simulation during stamping operation is introduced. Factors affecting the formability of the material, such as temperature, friction, marginal pressure, etc, are briefly referred. Many important conclusions have been reached, the investigations of corresponding projects have been initiated and drawn an extensive attention. Finally, future research domains are discussed and the further development of textile composites is expected.
出处
《力学进展》
EI
CSCD
北大核心
2004年第3期327-340,共14页
Advances in Mechanics
基金
香港研究资助局(HKUST6012/02E)资助项目~~
关键词
纺织复合材料
本构关系
成形性
锁定角
皱曲
平纹
冲压
textile composites, plain woven, stamping, formability, constitutive relation, locking angle, wrinkling
