Experimental and numerical investigation of the behavior of cylindrical thin-walled GFRP Shells with different geometric Features under dental load

Structural applications of composite materials in various structures such as oil and gas industries, water supply systems, marine industries, aerospace and military industries are included. Especially in structures where a high ratio of strength to weight is important, these applications are increasing, a common example of which is cylindrical composite tanks. External loads may enter the tanks by means of compression tools such as falling objects or colliding with machines, etc. These loads may cause serious and sudden damage to the tanks. For this reason, it is very important to study the effect of such forces. This paper is the result of a laboratory study in which four samples of GFRP tanks with an inner diameter of 800 and 400 mm and a thickness of 4 mm were tested and examined under a dental load. Also, for numerical simulation of the tests performed, Abacus software was used and the load-displacement diagrams obtained from the experiment with finite element results were examined and analyzed, which shows the appropriate estimate of finite element analysis. The experimental results showed that reducing the sample length has a significant effect on increasing the bearing capacity and also the results obtained in vitro are in good agreement with the numerical simulation results.