船用夹层板芯材的动态力学性能实验研究 |
| |
引用本文: | 田阿利,叶仁传,沈超明. 船用夹层板芯材的动态力学性能实验研究[J]. 船舶力学, 2015, 0(7): 834-840. DOI: 10.3969/j.issn.1007-7294.2015.07.009 |
| |
作者姓名: | 田阿利 叶仁传 沈超明 |
| |
作者单位: | 江苏科技大学 船舶与海洋工程学院,江苏 镇江,212003 |
| |
基金项目: | 国家自然科学基金青年基金,江苏科技大学青年骨干教师支持基金 |
| |
摘 要: | 基于分离式霍普金森压杆实验装置,对船用夹层板系统(SPS)的芯材-聚氨酯弹性体的动态力学性能进行了实验分析。在实验满足一维、均匀性的前提下,计算得到了聚氨酯弹性体在不同应变率下的应力—应变关系,讨论了试样尺寸对结果的影响;考虑聚氨酯弹性体不同于金属的动态力学性能,以及准静态力学性能与动态力学性能的差异,确定运用朱—王—唐(ZWT)方程描述聚氨酯弹性体的本构关系,能够准确反应聚氨酯弹性体的非线性粘弹性特性,拟合结果与实验结果吻合较好。
|
关 键 词: | 船用夹层板 聚氨酯弹性体 动态力学性能 本构模型 |
Experimental study on dynamic mechanical properties of ship sandwich plate |
| |
Abstract: | The dynamic compressive properties of polyurethane elastomer which can be used as core mate-rials of ship sandwich plates system (SPS) were experimentally studied by means of a split Hopkinson pres-sure bar at high strain rates. On the premise of one dimension and uniformity, the stress-strain relations of polyurethane elastomer are investigated at different strain rates and the effects of specimen size on the re-sults were discussed. A constitutive relation model was proposed for polyurethane elastomer and other vis-coelastic plasticity materials by numerical fitting to experimental results based on ZWT nonlinear viscoelas-tic. The comparison with the experiment results showed the validity of the proposed constitutive relation model. |
| |
Keywords: | ship sandwich plate polyurethane elastomer dynamic mechanical properties constitutive relation model |
本文献已被 CNKI 万方数据 等数据库收录! |
|