Characterizing the Viscoelastic Properties of Hydrogel Thin Films by Bulge Test
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- Characterizing the Viscoelastic Properties of Hydrogel Thin Films by Bulge Test
- 发表刊物：
- Journal Of Applied Mechanics-Transactions Of The Asame
- 摘要：
- In this work, we carried out bulge test for quantifying the viscoelastic properties of poly
(vinyl alcohol) (PVA) thin films with custom-developed apparatus. A viscoelastic bulge
deformation (VBD) model based on the elasticity–viscoelasticity correspondence principle
and spherical cap equation is established to describe the bulge deformation of polymeric
thin films. The VBD model can be used to determine the time-dependent modulus
by bulge test for polymeric films. Uniaxial compressive relaxation test and PRONY series
fitting method are used to define the constitutive parameters of the VBD equations. We
presented two types of VBD models in frequency domain under linear loading and step
loading conditions. Through inverse Laplace transformation, the proposed VBD model
can effectively predict the bulge deformation of PVA hydrogel thin film. Numerical simulations
are also conducted to validate the VBD model under step loading conditions. This
work provides a methodology to characterize the viscoelastic properties of polymeric
films by bulge test.
- 合写作者：
- Chen, YF; Ai, SG; Tang, JD; Pei, YM; Tang, LQ; Fang, DN
- 是否译文：
- 否
- 发表时间：
- 2017-03-18