Regional stretch method to measure the elastic and hyperelastic properties of soft materials

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2018,（2）
• 页码范围: 56-64
• 页数: 9页
• 语种: 英文

摘要

Characterizing the mechanical properties of soft materials and biological tissues is of great significance for understanding their deformation behaviors.In this paper,a regional stretching method is proposed to measure the elastic and hyperelastic properties of a soft material with an adhesive surface or with the aid of glue.Theoretical and dimensional analyses are performed to investigate the regional stretch problem for soft materials that obey the neo-Hookean model,the Mooney-Rivlin model,or the Arruda-Boyce model.Finite element simulations are made to determine the expressions of the dimensionless functions that correlate the stretch response with the constitutive parameters.Thereby,an inverse approach is established to determine the elastic and hyperelastic properties of the tested materials.The regional stretch method is also compared to the indentation technique.Finally,experiments are performed to demonstrate the effectiveness of the proposed method.