Improving the O-ring Sealing of 8 gram Charger by Finite Element Analysis and Shape Optimization
|關鍵字:||衝壓;密封;接觸應力;有限元素;最佳化;stamping;sealing;contact stress;finite element;optimization|
N2O charger are widely used in many kinds of application, the most common one is cream charger used in restaurant, other applications can be found with soda siphon and paintball gun. For the present, the sealing of charger head is based on one-pass stamping forming. In this research, the finite element software ABAQUS/Standard with 2-D axisymmetric model was adopted to analyze the size influence of sealing elements. From preliminary results of the analysis both numerically and experimentally, the contact of the o-ring gasket with the charger head was found to have a crucial impact for sealing effect. Not only the maximum contact stress but also the size of the contact area and the uniformity of the contact stress distribution will dominate the effectness of sealing. So this three factors will be chosen as the standard criteria for choosing suitable sealing parameters by finite element simulation. Finally the optimization software SmartDO was adopted to design the last punch shape. A verification experiment was conducted and the consistency with respect to the optimization result revealed the usefulness of this research.
|Appears in Collections:||Thesis|
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