摘要
索膜结构在一定的温度和恒定外力作用下会产生变形随时间增长而逐渐增大的现象,即蠕变现象,影响结构的使用价值,因而对索膜结构的蠕变性能的研究是至关重要的.文章利用描述粘弹性蠕变行为的Burgers四元件模型来模拟索膜结构的蠕变性能,推导出蠕变影响的有限元方程.同时,还利用ANSYS软件对索膜结构进行蠕变分析,得出了蠕变第一阶段曲线,为研究蠕变影响的应力应变分析提供了科学依据.
Under invariable temperature and outside force, a cable-membrane structure will produce distortion that increases gradually with time. This creep phenomenon affects structure usability. Here, creep performance of a cable-membrane structure was analyzed by using a four-element Burger model to describe viscoelastic solid creep and produce a finite element equation that considers creep affect. ANSYS software was also used to analyze creep performance of a cable-membrane structure. A first phase creep curve was derived, which provides a foundation for analyzing stress-strain and the effects creep.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2006年第2期204-207,共4页
Journal of Harbin Engineering University
基金
国家自然科学基金资助项目(50178047)
辽宁省教育厅科研基金资助项目(2004D245)
关键词
索膜结构
粘弹性
蠕变
Burgers四元件模型
cable-membrane structure
viscoelastic solid
creep phenomenon
four-element Burger model
