论文标题
重复载荷和卸载期间的纯剪切式循环应力舒适模型
Orthotropic cyclic stress-softening model for pure shear during repeated loading and unloading
论文作者
论文摘要
我们得出了一个正交模型，以描述通过多个应力 - 应变循环的碳填充橡胶硫酸盐的循环应激，并随着最大应变值的增加。我们将变形专用于纯剪切负荷。由于应变诱导的各向异性从初始初级载荷开始，因此该材料随后可以被描述为正性型，因为在纯剪切中，有三种不同的主拉伸，因此在这三个方向中，应变诱导的应力反应各向异性都不同。我们为弹性反应，应力松弛和残留应变得出非线性矫置模型，以准确对与环状应激软化相关的非弹性特征进行建模。然后，我们开发了Arruda-Boyce八链弹性模型的正交形式，然后将其与本文中先前开发的想法相结合，以产生一种正型构型关系，以供充气橡胶燃料的固定式固定橡胶燃料燃料。此处开发的模型包括滞后，应力 - 浮肿和残留应变的广泛效果。发现该模型与实验数据很好地比较。 } {mullins效应，应力 - 递延，滞后，残留应变，正交}。}
We derive an orthotropic model to describe the cyclic stress-softening of a carbon-filled rubber vulcanizate through multiple stress-strain cycles with increasing values of the maximum strain. We specialize the deformation to pure shear loading. As a result of strain-induced anisotropy following on from initial primary loading, the material may subsequently be described as orthotropic because in pure shear there are three different principal stretches so that the strain-induced anisotropy of the stress response is different in each of these three directions. We derive non-linear orthotropic models for the elastic response, stress relaxation and residual strain in order to model accurately the inelastic features associated with cyclic stress softening. We then develop an orthotropic version of the Arruda-Boyce eight-chain model of elasticity and then combine it with the ideas previously developed in this paper to produce an orthotropic constitutive relation for the cyclic stress-softening of a carbon-filled rubber vulcanizate. The model developed here includes the widely-occurring effects of hysteresis, stress-relaxation and residual strain. The model is found to compare well with experimental data. } {Mullins effect, stress-relaxation, hysteresis, residual strain, orthotropy.}
