Patterns design of filament wound spherical structure based on a new winding strategy

Abstract

In order to satisfy the collision-resistance requirements for the stiffness and strength of collision-protected spherical structure of marine structure platforms, a new winding strategy for spherical structure was proposed, which can make the thickness distribution of the filament wound layer of the spherical structure relatively even, and the polar opening can be covered by the filament wound layer. In this paper, the filament wound trajectory equation and the approaches for winding parameters design of spherical structures were presented. The influence of different partitions on the thickness distribution of the filament wound layer for spherical structure was analyzed. The optimal partition was adjusted according to the even distribution condition of the filament wound patterns, and the simulation of the new winding strategy of the spherical structure, dry yarn filament wound experiment and the wet filament wound experiment was carried out with adjusted partitions. The results show that when adopting the new winding strategy, the obtained winding pattern is stable. The feasibility of the new winding strategy is verified, which can consequently improve the structural bearing capability of spherical structure.

Layup structures of CFRP grinding wheel matrix and an optimal design of combined multi-layup structures

“…It is a conventional method to form the orthotropic layup structural grinding wheel matrix by winding all the fiber plies continuously in the circumferential direction and stacking to a certain thickness in the radial direction. The fiber direction coincided with the hoop direction of the matrix, and the performance of continuous fibers was superior to ordinary fibers, 28 which greatly improved the hoop stiffness of the matrix. Compared with the laminated structure, the frequent change of the layer angle was avoided in the process, nevertheless some fibers would inevitably be wrinkled, due to the increase of winding thickness and the change of tension, then affected the performance of the matrix.…”