Numerical study on the mechanical behavior of a polyurethane adhesive under high strain rate
Numerical study on the mechanical behavior of a polyurethane adhesive under high strain rate
复制标题
高应变率下聚氨酯胶粘剂力学行为的数值研究
DOI：
10.1016/j.compositesb.2018.08.110
复制
发表时间：
2019-02
期刊：
影响因子：
--
通讯作者：
Yun Zou
中科院分区：
文献类型：
--
作者：
Zhemin Jia;Guoqing Yuan;Xiaoping Feng;Yun Zou
对聚氨酯（PU）胶粘剂的内聚参数在不同应变率条件下进行了实验测试。由于该胶粘剂在实际冲击条件下应变率不断变化，本文提出一种称为加权平均应变率法的方法，以确定高应变率条件下胶粘剂用于数值模拟的有效应变率。基于此方法，建立了内聚参数与所确定有效应变率之间的关系，并开发了该胶粘剂的应变率相关内聚本构模型，通过子程序将其植入商用有限元分析软件中。利用双悬臂梁（DCB）试验、端部缺口弯曲（ENF）试验和厚胶接件剪切试验（TAST）的实验数据对该模型进行校准和验证。最后，开展了复合材料单搭接接头在高加载速率下的冲击拉伸剪切试验及数值分析，以验证该子程序的可靠性。通过将有限元分析结果与实验结果对比，二者吻合良好，证明了应变率确定方法和该子程序的有效性。
The cohesive parameters of a polyurethane (PU) adhesive are experimentally tested under different strain rate.conditions. As the strain rate of this adhesive is constantly changing under the actual impact conditions, this.paper proposes a method, called weighted average strain rate method, to determine the effective strain rate of.the adhesive under the high strain rate condition for numerical simulation. Based on this method, the relationship.between cohesive parameters and the determined effective strain rate is established and a strain ratedependent.cohesive constitutive model of the adhesive is developed and implemented into commercial finite.element analysis software via a subroutine. The model is calibrated and verified against experimental data for.double cantilever beam (DCB), end notched flexure (ENF) tests and thick adherend shear tests (TAST). Finally,.impact tensile shear test and numerical analysis on composite single-lap joints at high loading rates are carried.out to validate the reliability of the subroutine. By comparing the FEA results with experimental results, a good.agreement is achieved which proves the effectiveness of the strain rate determination method and the subroutine.
登录
查看更多内容
影响因子：
4.7
作者：
Bouhala, Lyazid;Makradi, Ahmed;Natarajan, Sundararajan
通讯作者：
Natarajan, Sundararajan
DOI：
10.1016/j.compositesb.2018.03.041
发表时间：
2018-08
期刊：
Composites Part B: Engineering
影响因子：
--
作者：
D. Ungureanu;N. Taranu;V. Lupășteanu;D. Isopescu;G. Oprișan;P. Mihai
通讯作者：
D. Ungureanu;N. Taranu;V. Lupășteanu;D. Isopescu;G. Oprișan;P. Mihai
影响因子：
2.8
作者：
Dhaval P. Makhecha;R. Kapania;E. Johnson;D. Dillard;G. Jacob;J. M. Starbuck
通讯作者：
Dhaval P. Makhecha;R. Kapania;E. Johnson;D. Dillard;G. Jacob;J. M. Starbuck
DOI：
10.1016/j.ijadhadh.2008.06.005
发表时间：
2009-04-01
影响因子：
3.4
作者：
da Silva, Lucas F. M.;das Neves, Paulo J. C.;Spelt, J. K.
通讯作者：
Spelt, J. K.
影响因子：
13.1
作者：
Jia, Zhemin;Hui, David;Xu, Fujun
通讯作者：
Xu, Fujun