Compared with traditional single network elastomers, multiple network elastomers (MNEs) can achieve high stiffness and toughness. MNEs can be assumed as elastomer composites, where the first network elastomer serves as fillers and the other networks are assumed as matrix. Thus, similar to nanoparticle filled rubbers, MNEs also exhibit the Mullins effect. In addition, the mechanical response of MNEs shows significant dependence on the prestretching ratio of the filler network. In this work, a constitutive model is developed to describe the complex mechanical behaviors of MNEs. For a single chain, the Langevin statistics has been modified to incorporate the contribution of bond deformation. The polydisperse network of the filler network is progressively damaged with deformation, which is the underlying mechanism for the Mullins effect. Through incorporation the effect of prestretch caused by the matrix, the model also fully captures the stress–strain response of MNEs with varied stretching ratios of the filler network, which is beyond the ability of the classic damage models based on the Langevin statistics.

与传统的单网络弹性体相比，多网络弹性体（MNEs）可以实现高刚度和韧性。MNEs 可以被假定为弹性体复合材料，其中第一个网络弹性体作为填料，其他网络被假定为基体。因此，类似于纳米颗粒填充的橡胶，跨国公司也表现出穆林斯效应。此外，MNEs 的机械响应显着依赖于填料网络的预拉伸比。在这项工作中，开发了一个本构模型来描述 MNEs 的复杂机械行为。对于单链，Langevin 统计已被修改以包含键变形的贡献。填料网络的多分散网络随着变形逐渐损坏，这是穆林斯效应的潜在机制。