Research on Application of Carbon Fiber-Steel Materials in Lightweight Gun Equipment

Purpose: A typical rectangular cradle on the gun equipment main bearing members is introduced. The effect of carbon fiber-steel composites on maintaining the bending stiffness and torsional stiffness of rectangular cradles is analyzed. Method: Based on the finite element simulation, the maximum deflection of the typical rectangular cradle under bending load and torsional load is calculated. Bending test and torsion test are performed by making specimens, and the deflection in the two groups of specimens in guiding lightweight is compared. Results: Under 5 kN bending load, the deformation of steel specimen is larger than that of carbon fiber-steel composite specimen, but the deformation is similar at 10 kN bending load. Under 500 Nm torsion load, the deformation of carbon fiber-steel composite specimens R4 and R5 is less than that of steel specimen of the same weight. Conclusion: Replacing some of the steel with carbon fiber for rectangular cross-section structures can effectively improve the torsional stiffness and can increase the bending stiffness under a low bending load.