FEA analysis of gas spring design

Gas spring has been proven for many industrial applications like automobiles hatchback tail gate, office chairs, furniture, medical & aerospace etc. Gas spring is smart device for storing energy. A gas spring, stores energy by compressing the gas contained inside, rather than using straining material that makes up a coil spring. In this research paper, an effort has been made to optimized design & meet the requirement of optimized deign of gas spring application, in this study found a fair idea for selection of gas spring parameters for the use in the door lifting/closing. These models are used to check the design of door lifting/closing factor of safety which is manufactured by reverse engineering. Actual data obtained from manufacturer on a single hydro pneumatic suspension unit. The data is again compared with actual model results and correlates significantly better than the actual model. It is thus concluded that the parameters used originally are safe but can be altered to reduce weight as there is still margin for factor of safety to be reduced. So that direct manufacturing of as it is parts should be omitted in the reverse engineering process if the parameters investigated are not sensitive to errors in the spring model