Drop-impact cushioning effect of electronics products formed by plates
Most electronic devices suffer impact-induced failure in their usage. Drop/impact performance of these products is one of the important concerns in product design. It is often time and cost consuming and thus undesirable to conduct drop tests for every design to physically detect, any sign of failure and identify their drop behaviors. Finite element analysis provides a vital and powerful tool to solve the problems. The methodology of finite element modeling, simulation and basic experimental validation should be developed to effectively study the drop/impact effects. Modeling and transient drop analysis for a simplified model representing electronics products formed by plates is considered in this work. The model simplified by using an equivalent spring system significantly saves the computational time while achieving reasonable results. The impact analysis of the model placed inside the cushioning buffer hitting the rigid floor is also the main concern of this work. The model is created using Pro-E and the drop-impact analysis is carried out on an existing software package, PAM System. It is found that having a cushioning buffer reduces the level of shocks at the instant of impact and so protecting the products from damage. The effect of different loaded masses placed on the top plate is also studied in this work.
cushioning effect electronics products buffer impact force deflection