Simulation study on performance optimization factors of inflatable cushion based on rigidity theory

Abstract

In this study, we present the influencing factors and the specific degree of cushioning performance of the air column bag. We analyze and summarize the theory of air column bag rigidity and determine that the initial inflation pressure is the most important factor affecting the performance of the pad. Select an energy-saving lamp as the package, wrap it with an air column bag with different unique initial inflation pressure, and carry out drop simulation analysis and drop test on the package. It is found that the air pressure gradient defined in the test can effectively play a protective role; smaller initial inflation pressure can effectively prolong the buffer action time, and larger initial inflation pressure can effectively improve the cushion's absorption capacity of impact energy, but if the air pressure exceeds a certain range, it is counterproductive. A comprehensive comparison shows that taking 40 kPa as the initial inflation pressure may be the best cushioning effect. Finally, it provides reference suggestions for further accurate use and simulation research on air column bags.Article highlightsBased on the rigidity theory, the initial inflation pressure is the largest factor affecting the performance of an inflatable cushion.The gas–solid coupling of the pressure vessel is used to simulate the air column bag model.The energy absorption capacity of air column bag liner with different initial inflation pressure was studied.To achieve the best cushioning effect, the appropriate initial inflation pressure should be selected, and the larger the value, the better.