非线性弹性材料简介 非线性弹性材料即使在极小的应变下也呈现非线性的应力-应变关系,这与超弹性材料相反,后者的应力-应变曲线在中到大应变下变得明显非线性。这一类重要材料包括用于模拟金属和其他韧性材料的 Ramberg-Osgood 模型,以及非线性土壤模型,例如 Duncan-Chang 模型。 幂律 早在100 年前,Paul Ludwik 在他...
COMSOL’s Material Library Module includes data for PDMS. Initial bulk and shear moduli for PDMS have listed as 3.333 × 107 Pa and 6.67 × 105 Pa, respectively. 为了满足上节中所述的剪切模量关系和近似值,\mu _1=\frac{7}{16}\mu =2.918\times 10^5\mu _2=\frac{1}{16}\mu =0.417\t...
Introducing Nonlinear Elastic Materials | COMSOL Blog
COMSOL Nonlinear Structural Materials Module User’Nonlinear Structural Materials Module User’s Guide
1/5第1讲:COMSOL是什么,能干什么1.1COMSOL是什么?这里所说的COMSOL实际上指的是COMSOL公司的旗舰产品:COMSOLMultiphysics.若无特殊说..
an isotropic linear-elastic material can be characterized with a single uniaxial test. Materials exhibiting strain-rate and loading-history dependence require further experiments, such as relaxation, creep, or cyclic tests at different strain rates. If the component operates at high and/or variabl...
f=\left\{\begin{array}{c l}\sigma_{trial,e}-^{old}\sigma_{ys}<0 & \mathrm{Elastic}\\ \sigma_{trial,e}-^{old}\sigma_{ys}\ge0 & \mathrm{Elastoplastic}\end{array}\right. 检查屈服条件来确定弹性或弹塑性计算。 现在,应力更新算法必然分为纯弹性计算或弹塑性计算分支。我们将从纯弹性分...
研究表明,通过对压电材料施加外部机械压力可以显著改变其电化学行为。例如,Gao 1 和 Wang 2 的工作均...
The node Linear Elastic Material is the default material model for the Solid Mechanics interface. The node Free is a boundary condition that allows all boundaries to move freely without a constraint or load. The node Initial Values is used for specifying initial displacement and velocity values ...
Thermal Expansion 1 1Right-click Component 1Solid MechanicsLinear Elastic Material 1 and choose Thermal Expansion. 2In the Thermal Expansion settings window, locate the Model Inputs section. 3In the T edit field, type thermLC(t). 4Locate the Thermal Expansion Properties section. In the Tref ...