Experimental Simulation of Dynamic Compression Properties of CFRP Cylinders under High Launch Overload

Abstract

Abstract Abstract.To explore the mechanical behavior of carbon fiber reinforced plastics (CFRP) under high launch overload, this study presents a laboratory loading technological method for chamber-pressure curve simulation under high launch overload using a Φ100 mm-diameter split-Hopkinson pressure bar (SHPB) device. On this basis, experiments are carried out to study the dynamic compression properties and failure modes of CFRP cylinders. The results show that applying a load changing in a similar way to the chamber pressure-temperature (P-T) curve to the specimens using a large-diameter SHPB device is an effective technical means to simulate the behavior evolution of CFRP cylinders under high launch overload. Through load testing and simulation, it is found that CFRP cylindrical members have a dynamic compressive strength of 611 MPa, and the maximum force and weight overload of 893 kN and 9023 g respectively, and failure strain between 0.5% and 0.6%. As a structural member, CFRP cylinders exhibit high rigidity and good resistance to high overload.