标题： 分数阶粘弹性SPH模型：LAOS模拟与实验数据 显示英文标题

标题： Integral fractional viscoelastic models in SPH: LAOS simulations versus experimental data

摘要： 聚合物的流变行为通过在复杂流动中进行数值模拟并与实验进行比较来研究。 对于我们的模拟，我们采用了一种平滑粒子流体动力学方案，该方案基于K-BKZ框架的积分分数模型。 结果与在中等和大振幅振荡剪切下对熔融态等规聚丙烯进行的实验进行了比较。 数值结果与实验数据相符，该模型能够捕捉并预测聚合物熔体的线性和非线性粘弹性行为。 结果表明，在实际条件下对复杂聚合材料进行模拟，为SPH配备积分分数模型是一种有前景的方法。 显示英文摘要

摘要： The rheological behaviour of a polymer was investigated by performing numerical simulations in complex flow and comparing them to experiments. For our simulations, we employed a Smoothed Particle Hydrodynamics scheme, utilizing an integral fractional model based on the K-BKZ framework. The results are compared with experiments performed on melt-state isotactic polypropylene under medium and large amplitude oscillatory shear. The numerical results are in good agreement with the experimental data, and the model is able to capture and predict both the linear and the non-linear viscoelastic behaviours of the polymer melt. Results show that equipping SPH with an integral fractional model is promising approach for the simulation of complex polymeric materials under realistic conditions.