Modeling the moisture dependent material behavior of adhesive bonds close to the glass transition temperature
Modeling the moisture dependent material behavior of adhesive bonds close to the glass transition temperature
复制标题
对接近玻璃化转变温度的粘合剂的湿度依赖性材料行为进行建模
DOI：
10.1002/pamm.201410157
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Diebels
中科院分区：
文献类型：
--
作者：
F. Goldschmidt;S. Diebels
本文研究了一种粘弹性交联聚氨酯。环境影响导致聚合物胶粘剂力学性能的空间分布不均匀。扩散传输机制将水从环境中转移到聚合物中。进一步的影响，如温度，也会影响粘合剂的机械性能。该模型尊重这些影响，并考虑了材料的不可压缩性。可以观察到粘弹性行为，特别是接近玻璃化转变温度[3]。除了这些对聚合物的一般影响外，粘合剂的粘合表现出对层厚度的机械行为的依赖。对于数值研究，所有必要的平衡和本构方程都在开源c++有限元代码处理中实现。[1, 2]。通过对实验结果和仿真结果的比较，可以确定所用聚合物的材料参数。（©2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim）
In the presented work, a viscoelastic cross‐linked polyurethane is investigated. Environmental influences lead to an inhomogeneous spatial distribution of the mechanical properties in polymer adhesives. Diffusive transport mechanisms transfer water from the environment into the polymer. Further effects like temperature, also have an influence on the mechanical behavior of adhesives. The model respects these influences and takes the incompressibility of the material into account. Viscoelastic behavior can be observed, especially close to the glass transition temperature [3]. Additional to these general effects on polymers, adhesive bonds show a dependency of the mechanical behavior on the thickness of the layer. For numerical investigations, all necessary balance and constitutive equations are implemented in the open‐source C++ finite element code deal.II [1, 2]. With the help of this implementation and by comparing experimental results and results gained from simulations, material parameters of the used polymer can be identified. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
聚氨酯粘结剂的尺寸效应：实验、建模和参数识别
影响因子：
4.5
作者：
M. Johlitz;S. Diebels;J. Batal;H. Steeb;W. Possart
通讯作者：
W. Possart