一种新型双弹簧、双活塞本构模型在聚合物黏弹性质描述中的应用研究
发布时间：2018-07-14 12:46
【摘要】：推导了双弹簧、双活塞黏弹性力学模型的本构方程.在CETR UMT-2型试验机及LKDM-2000轮廓摩擦磨损仪上考察了尼龙PA66、聚四氟乙烯、聚甲基丙烯酸甲酯、聚甲醛和聚醚型聚氨酯等材料的静态蠕变特性、松弛特性.分别利用标准线性固体模型和新型本构模型对实验材料的蠕变、松弛特性进行了表征.实验事实及理论计算结果表明,相对于标准线性固体模型而言,该力学模型能更好地反映聚合物材料的蠕变、松弛等黏弹性质.
[Abstract]:The constitutive equations of viscoelastic model of double spring and double piston are derived. The static creep and relaxation properties of nylon PA66, polytetrafluoroethylene, polymethyl methacrylate, polyformaldehyde and polyether polyurethane were investigated on CETR UMT-2 tester and LKDM-2000 profile friction and wear tester. The creep and relaxation properties of experimental materials were characterized by standard linear solid model and new constitutive model, respectively. The experimental results and theoretical results show that the mechanical model can better reflect the viscoelastic properties of polymer materials, such as creep and relaxation, compared with the standard linear solid model.
【作者单位】： 徐州工程学院机电工程学院;
【基金】：国家自然科学基金(批准号:51275514) 清华大学摩擦学国家重点实验室开放基金(批准号:SKLTKF10B09)资助项目
【分类号】：O631.21
，
本文编号：2121694
[Abstract]:The constitutive equations of viscoelastic model of double spring and double piston are derived. The static creep and relaxation properties of nylon PA66, polytetrafluoroethylene, polymethyl methacrylate, polyformaldehyde and polyether polyurethane were investigated on CETR UMT-2 tester and LKDM-2000 profile friction and wear tester. The creep and relaxation properties of experimental materials were characterized by standard linear solid model and new constitutive model, respectively. The experimental results and theoretical results show that the mechanical model can better reflect the viscoelastic properties of polymer materials, such as creep and relaxation, compared with the standard linear solid model.
【作者单位】： 徐州工程学院机电工程学院;
【基金】：国家自然科学基金(批准号:51275514) 清华大学摩擦学国家重点实验室开放基金(批准号:SKLTKF10B09)资助项目
【分类号】：O631.21
，
本文编号：2121694
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