نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Composite grid structures have garnered significant attention across various industries due to their low weight, high strength, and economic advantages. This study focuses on developing of an advanced filament winding machine with four degrees of freedom to produce experimental specimens. The machine is designed to fabricate grid structures on cylindrical, conical, and complex surface. Integrated with three-dimensional modeling tools, custom control software enables the automated and efficient placement of fibers. Experimental specimens were manufactured using carbon fibers impregnated with epoxy resin and wound onto custom silicone molds. The filament winding technique was selected for its ability to achieve high fiber volume fractions, minimize voids, and enhance cost-efficiency. To validate the optimization results, grid structures featuring a Voronoi pattern were subjected to experimental testing. Buckling tests, conducted using a universal testing machine, evaluated the critical buckling loads and mechanical properties of the optimized specimens. According to the compressive buckling test data, the ratio of the critical buckling load to the weight of the structure is equal to 24,000 N/kg. Furthermore, the developed filament winding machine significantly reduced production costs compared to conventional methods. It also enabled the fabrication of structures with complex geometries and non-circular profiles, such as aircraft wings and hydrofoils. These capabilities enhance design flexibility and the application of advanced composite materials in engineering projects. The results demonstrate the efficacy of the developed machine and methodologies in producing high-performance composite grid structures while lowering manufacturing costs.
کلیدواژهها English