Datasets for Comprehensive Hyperelastic Constitutive Modeling and Analysis of Multi-Elastic Polydimethylsiloxane (PDMS) for Wearable Device Applications

To replicate the mechanical properties of polydimethylsiloxane (PDMS) in finite element method (FEM), an accurate constitutive model is required, preferably one that encompasses a wide range of PDMS elasticity. In this study, using commercial COMSOL Multiphysics FEM software, we determine Mooney-Rivlin 5 parameters as the best hyperelastic model fitted against PDMS experimental data, and proceed to construct a parameter correlation plot combining PDMS of different concentrations together. Experimental validation is then performed using parameters extracted from this plot, showing good agreement between simulation and experimental result. In addition, to reflect model applicability, simulations related to basic mechanical deformations involved in wearable devices (compression, stretching, bending and twisting) are performed and analyzed. Further analysis is also performed to investigate the effect of combining different experimental datasets as input into the model. These datasets include COMSOL mph file containing the setup related to Levenberg-Marquardt least squares method for fitting the main PDMS samples' experimental data (Excel files) to Mooney-Rivlin 5 parameters model. Also included are COMSOL mph files for compression, stretching, bending and twisting simulations.

为在有限元方法（FEM）中复现聚二甲基硅氧烷（PDMS）的力学特性，需构建一个精确的本构模型，理想情况下该模型应涵盖PDMS弹性范围的广泛数据。本研究中，利用商业COMSOL Multiphysics有限元分析软件，我们确定了Mooney-Rivlin 5参数作为与PDMS实验数据最佳拟合的超弹性模型，并进而构建了结合不同浓度PDMS的参数相关性图。随后，通过使用此图中提取的参数进行实验验证，显示出模拟结果与实验结果之间具有良好的一致性。此外，为了反映模型的应用适应性，对涉及可穿戴设备基本力学变形（压缩、拉伸、弯曲和扭转）的模拟进行了执行和分析。进一步的解析还旨在探究将不同实验数据集作为模型输入时的影响。这些数据集包括包含与Levenberg-Marquardt最小二乘法相关的设置，用于拟合主要PDMS样品实验数据的COMSOL mph文件（Excel文件），以及用于压缩、拉伸、弯曲和扭转模拟的COMSOL mph文件。