纤维束张紧力缠绕复合材料飞轮的预应力简化分析  

SIMPLIFIED INITIAL STRESS ANALYSIS OF COMPOSITE FLYWHEEL IN TENSION WINDING

作　　者：秦勇[1] 夏源明[1] 毛天祥[2] 

机构地区：[1]中国科学技术大学力学与机械工程系中国科学院中国科学技术大学材料力学行为和设计重点实验室,合肥230027 [2]中国科学院力学研究所,北京100080

出　　处：《复合材料学报》2003年第6期87-91,共5页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金资助项目(10172085)

摘　　要：　在纤维束缠绕时施加张紧力,使得固化成型后的飞轮内部形成一定的预加径向压应力,这是提高飞轮径向强度的有效方法之一。基于过盈配合的思想建立了计算张紧力缠绕导致的复合材料飞轮内部预应力和变形的简化模型和方法。通过算例分析发现:等张力缠绕产生的环向应力在半径方向上先减小后增大,径向压应力不断变小;变张力缠绕过程中,张紧力由小逐渐变大时,飞轮的径向压应力增大,径向强度提高;飞轮设计中仅仅依靠张紧力缠绕是不够的,还必须和固化成型后的厚壁筒之间的过盈套装一起来设计合理的径向预加压应力。The method of tension winding of fiber bundle is an effective way to improve the radial strength of flywheels. An approach of calculating the initial stress and the deformation in tension winding according to misfit is advanced. The results show that the hoop stress decreases firstly and then increases while the radial compression stress decreases all the while in the equally winding tension. While in the changed winding tension which is enhanced from lower to higher levels, the radial compression stress can be increased. It is not sufficient to use the tension winding only in the fly-wheel design. The tension winding and the process of pressfit should be used together to design the initial radial compression stress rationally.

关 键 词：复合材料飞轮 张紧力 缠绕 过盈配合 径向强度 

分 类 号：TB331.0[一般工业技术—材料科学与工程]