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在外加磁场作用下 ,磁流变材料的力学性质可迅速发生变化甚至发生相变固化 ,材料的性能依赖于外加磁场的强度。作者基于一个简单的机械模型 ,发展了磁流变体的粘塑性本构描述 ,预言了磁流变流体的力学行为随磁场强度的变化 ,较好地描述材料在不同磁场强度下应力随应变而变化。结果表明所提出的模型能描述MR材料的塑性变形、粘性变形等内在的力学响应特性。
Under the action of external magnetic field, the mechanical properties of MRF can change rapidly or even phase change and cure. The performance of the material depends on the strength of the applied magnetic field. Based on a simple mechanical model, the author develops the visco-plastic constitutive description of the magnetorheological fluid and predicts the change of the mechanical behavior of the magnetorheological fluid with the change of the magnetic field to better describe the stress-strain of the material under different magnetic field strengths Variety. The results show that the proposed model can describe the inherent mechanical response characteristics of MR materials such as plastic deformation and viscous deformation.