Abstract.

We investigate the relationship between pre-buckling and post-buckling states as a function of shell properties, within the deflation process of shells of an isotropic material. With an original and low-cost set-up that allows to measure simultaneously volume and pressure, elastic shells whose relative thicknesses span on a broad range are deflated until they buckle. We characterize the post-buckling state in the pressure-volume diagram, but also the relaxation toward this state. The main result is that before as well as after the buckling, the shells behave in a way compatible with predictions generated through thin shell assumption, and that this consistency persists for shells where the thickness reaches up to 0.3 the shell’s midsurface radius.

Graphical abstract

中文翻译：

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让我们给那个沙滩球放气。

摘要。

我们研究各向同性材料壳的放气过程中，屈曲前状态与屈曲后状态之间的关系作为壳体属性的函数。凭借可以同时测量体积和压力的原始且低成本的设置，放开其相对厚度跨度较大的弹性壳体，直到它们弯曲为止。我们在压力-体积图中描述了屈曲后的状态，同时也描述了向该状态的松弛。主要结果是，在屈曲之前和之后，壳的行为都与通过薄壳假设生成的预测兼容，并且对于厚度达到壳中表面半径的0.3的壳，这种一致性仍然存在。

图形概要