In this paper we study wave propagation in a bimodular geomaterial, i.e. a material that has different moduli in compression and in tension. It is assumed that damping is the same for compression and tension. We use a discrete model to analyse the process of wave propagation in such a material. The model consists of a discrete chain of masses connected by dampers and bilinear springs that is springs having different stiffness in compression and tension. The chain is subjected to an external harmonic excitation. The results confirm that a higher damping leads to lower deformations and, thus, to higher energy dissipation. For the tension-compression harmonic excitation, only tensile deformations remain while compressive deformations get damped over time.
|Title of host publication||9th Australasian Congress on Applied Mechanics (ACAM9)|
|Place of Publication||Sydney|
|Publication status||Published - 2017|
|Event||9th Australasian Congress on Applied Mechanics - https://acam9.com.au/, Sydney, Australia|
Duration: 27 Nov 2017 → 29 Nov 2017
|Conference||9th Australasian Congress on Applied Mechanics|
|Period||27/11/17 → 29/11/17|