Mathematical Modeling of Low Velocity Impact on Hybrid CNG Cylinder

Abstract

In this paper a comparison was studied between mathematical modeling of CNG hybrid cylinder under impact. Impact resistance of hybrid material is analyzed using analytical modeling. Impact resistance against applied force is studied using Hertzian law which relates contact stiffness of wooden block and composite. Finite Element Analysis (FEA) for Low velocity impact (LVI) of wooden block on hybrid CNG cylinder is done for finding structural response parameters. 2 degree of freedom (2DOF) spring mass system is used for mathematical modeling of impact of wooden block on hybrid CNG cylinder. Stiffness values by analytical modeling are used in mathematical modeling for comparison with FEA. Results further show that values found by FEA and mathematical modeling are closely comparable.