Benchmark Material Data Sets for Hyperelastic Material Modeling

This repository contains experimental data sets that were used in my thesis.

### Contents

1. Treloar Data Set of Vulcanized Rubber

This data set includes measurements from uniaxial tension (UT), pure shear (PS) and equibiaxial Tension (EBT) [1].

2. Kawabata Data Set of Biaxial Tension of Rubber

This data set includes measurements from biaxial tension tests performed on vulcanized rubber [2].

3. Temperature-Dependent Hytrel 4556 Data Set

Experimental results characterizing the temperature-dependent mechanical behavior of the thermoplastic polyester elastomer Hytrel 4556 [3].

4. Temperature-Dependent Silicone (with Softening Behavior)

This data set represents a filled silicone rubber material and its stretch–strain response at different temperatures, capturing the temperature-induced softening behavior [4].

5. Hydration-Dependent Polyamide Aerogels

Contains mechanical test data for polyamide aerogels under varying hydration levels. The material behavior changes significantly with water content, and the data capture this effect [5].

### File Format

All data files are provided in plain text (.csv) using a semicolon (;) as delimiter. Each file includes descriptive headers such as:

1. Mechanical deformation parameter: stretch or strain

2. Corresponding stress

3. Any additional physical quantities (e.g., temperature, hydration level)

### Visualization

Each data set is accompanied by a corresponding plot, providing a visual overview of the experimental results to facilitate interpretation and model fitting.

### References

[1] Treloar, Leslie RG. “Stress-strain data for vulcanized rubber under various types of deformation”. In: Rubber Chemistry and Technology 17.4 (1944), pp. 813–825.

[2] Kawabata, S, Matsuda, M, Tei, K, and Kawai, H. “Experimental survey of the strain energy density function of isoprene rubber vulcanizate”. In: Macromolecules 14.1 (1981), pp. 154–162.

[3] Chemie Wirtschaftsförderungs-GmbH. DuPont Engineering Polymers Hytrel 4556. 2022. url: https://www.campusplastics.com/campus/en/datasheet/Hytrel%C2%AE+4556/DuPont/52/abead118 (visited on 03/29/2022).

[4] Rey, Thierry, Chagnon, G, Le Cam, J-B, and Favier, Denis. “Influence of the temperature on the mechanical behaviour of filled and unfilled silicone rubbers”. In: Polymer Testing 32.3 (2013), pp. 492–501.

[5] Moldován, Krisztián et al. “Mechanism of Hydration Induced Stiffening and Subsequent Plasticization of Polyamide Aerogel”. In: Advanced Materials Interfaces 10.17 (2023), p. 2300109.

### Disclaimer

I do not claim ownership of any of the original data. All data sets were extracted from publicly available literature and references, solely for academic and illustrative purposes within the scope of my thesis. I do not assume any liability for the accuracy, completeness, or usage of the data provided herein. Users are responsible for ensuring appropriate use and citation of the original sources.