Abstract
The compressive properties and constitutive model of silicon rubber were studied. Quasi-static and dynamic compression tests were carried out using an Instron-8872 universal machine and a modified Hopkinson pressure bar experiment device. The mechanical behaviors of silicon rubber materials at six different strain rates (0.001、0.01、0.1、1 750、2 300、3 000 s−1) were analyzed. The results show that silicon rubber has significant hyperelastic properties under static load and exhibits remarkable strain rate effects under dynamic load. There is a nonlinear relationship between elastic modulus and logarithm of strain rate ratio. Based on this, a constitutive model with a strain rate term was established to describe the mechanical properties of silicon rubber under static and dynamic compressive loads. Compared with existing models, the established five-parameter constitutive equation has the advantage of simple form. The maximum error within the strain range is kept within 15%, which is in good agreement with the experiment results.
| Translated title of the contribution | Compressive Mechanical Properties and Constitutive Model of Rubber Material |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 231-238 |
| Number of pages | 8 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 44 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2024 |