The effects of winding angle on the strength of fiber-winding composite pipe with ends under internal pressure (the ratio of hoop stress to axial stress is 2 ∶ 1) were investigated based on Hoffman failure criterion here.
基于Hoffman复合材料失效准则，考察了缠绕角对两端封闭的纤维缠绕复合材料内压管道（环向/轴向应力比为2∶1）强度的影响。
And then, the analysis and calculation are made for the winding pattern design of axial, hoop and helical filament winding.
首先对多向纤维缠绕机的结构特性及工作原理进行了概述，然后分别对轴向缠绕、环向缠绕、螺旋向缠绕等的缠绕线型规律进行了分析与计算，并以实现多向纤维缠绕线型为目的，对其相应的控制系统进行了设计。
The structure characteristics of the multidirectional filament winding machine are introduced. And then, the analysis and calculation are made for the winding pattern design of axial, hoop and helical filament winding. At last, the corresponding control system is introduced based on the accomplishment of the multidirectional filament winding process.
首先对多向纤维缠绕机的结构特性及工作原理进行了概述，然后分别对轴向缠绕、环向缠绕、螺旋向缠绕等的缠绕线型规律进行了分析与计算，并以实现多向纤维缠绕线型为目的，对其相应的控制系统进行了设计。
Based on the assumption of axis-symmetrical plane strain, the calculating formulas for the hoop stress were derived for the metallic pipelines under internal pressure strengthened by circumferential winding FRP. The use of prestressed FRP for metallic pipelines repair was proposed.
基于轴对称平面应变条件，推导了缠绕FRP加固承受内压的损伤金属管线的环向应力计算公式，并提出了预应力FRP加固损伤金属管线的思路。
Based on simplifying the carbon fiber filament wound layer and inner cylinder, the wall of the composite material vessel are simplified into two sub-models, hoop winding layer and longitudinal winding layer.
通过对碳纤维增强层进行模型简化，将复合材料容器的复合层简化为1个环向缠绕层和1个轴向缠绕层的2个子模型；