Manufacturing and axial compression performance of a novel composite cylindrical shell

Abstract

It is challenging and expensive to manufacture composite cylindrical shells with characteristics such as large diameters and lengths and 0°‐fibers for applications such as bridge piers and wind power columns. In this study, a new type of cross section configuration of inner annular block and outer annular continuous fiber is proposed, and a low‐cost method is established First, the inner assembly block is pulled and extruded, and then, the outer continuous prestressed fiber is wound as the mold to apply annular compressive stress to the inner tube. Axial compression tests were carried out with Φ104 × 8 mm glass fiber‐reinforced polymer(GFRP) tubes made of pultruded standard blocks without integral forming, without external winding carbon fiber, and with an external winding layer. The results show that the mechanical properties of the pipe produced via piece‐assembling followed by winding are better than those produced via piece‐assembling without an external winding layer, which has mechanical properties similar to those of a one‐time forming member. Based on the obvious deterioration of mechanical properties, composite cylindrical shells with large diameters and lengths and 0°‐fibers can be produced at low costs.

Research progress of composite cylindrical shells

“…According to the mechanics of materials, stiffness (elastic modulus) refers to the ability of a material or F I G U R E 1 1 Manufacture technology of composite cylindrical shell with combined structure. 38 structure to resist elastic deformation when stressed, while strength refers to the ability of materials to resist damage. According to different analysis methods, strength theories of composite materials can be divided into macroscopic mechanics and microscopic mechanics.…”

“…To sum up, CCS prepared by the above preparation process is usually used in the aerospace field due to the preparation difficulties and high cost, and there are few studies on how to prepare the CCS with large diameter (diameter more than 1000 mm FRP cylindrical shell 37 ), ultra‐long, 0 degree fiber and other characteristics suitable for bridge pier, wind power column at a low cost. Zhang Liwei et al 38 (Figure 3) proposed a new structural form of CCS, namely CCS, which consists of internal assembly standard block and external fiber winding.…”

“…Zhang et al 38 (Figure 11) developed a preparation method combining pultrusion and winding technology for the proposed CCS, and conducted axial compression tests.…”

Quasi‐static axial crushing of multi‐tubular foam‐filled carbon fiber reinforced composite structures

“…In aerospace and automotive industries, where weight and safety are crucial, specific strength and stiffness are significant structural design criteria. Worries about the environment and the rise in fuel prices have prompted companies that make cars and aircraft to use sophisticated composite materials as desired alternatives to heavy conventional metallic materials in their products 6,7 . Several researchers worldwide have looked into the crashworthiness of composite materials because cars are likely to undergo multiple collisions over the course of their lifetime 8,9 …”

“…Worries about the environment and the rise in fuel prices have prompted companies that make cars and aircraft to use sophisticated composite materials as desired alternatives to heavy conventional metallic materials in their products. 6,7 Several researchers worldwide have looked into the crashworthiness of composite materials because cars are likely to undergo multiple collisions over the course of their lifetime. 8,9 As one of the most common composite materials, carbon fiber-reinforced polymers (CFRPs) have recently been used in the design of vehicles to increase structural safety and fuel efficiency.…”