期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
变刚度薄壁杆件的动力稳定性 被引量:6
1
作者 罗漪 王全凤 《华侨大学学报(自然科学版)》 CAS 2001年第3期272-277,共6页
采用有限单元法 ,研究无阻尼条件下受轴向周期性动力荷载作用的变刚度薄壁杆件动力稳定问题 .承受轴向周期性变化外荷载的薄壁杆件 ,其非线性几何刚度矩阵随着轴向外荷载的变化而改变 .因此 ,所研究的问题在本质上为变刚度薄壁杆件的动... 采用有限单元法 ,研究无阻尼条件下受轴向周期性动力荷载作用的变刚度薄壁杆件动力稳定问题 .承受轴向周期性变化外荷载的薄壁杆件 ,其非线性几何刚度矩阵随着轴向外荷载的变化而改变 .因此 ,所研究的问题在本质上为变刚度薄壁杆件的动力稳定性问题 .用有限单元离散变刚度薄壁杆件 ,通过公式变换 ,将无阻尼条件下变刚度薄壁杆件的振动方程转化为 Mathieu方程 .应用 Matlab程序设计语言编制程序 ,确定在轴向周期性动力荷载作用下 ,变刚度薄壁杆件可能发生的相应于弯曲振动、扭转与翘曲耦合振动的动力不稳定区域 。 展开更多
关键词 动力稳定性 变刚度 薄壁杆件 有限单元法 参数振动 轴向外荷载 弯曲振动 结构动力学
下载PDF
Properties of Rattan Cane Reinforced Concrete Facade Subjected to Axial Loading 被引量:1
2
《Journal of Civil Engineering and Architecture》 2011年第11期1048-1052,共5页
The use of steel reinforced concrete facade is gradually becoming unpopular because of the damage caused to the elements as a result of corrosion of the steel reinforcement. It is now possible to build lightweight and... The use of steel reinforced concrete facade is gradually becoming unpopular because of the damage caused to the elements as a result of corrosion of the steel reinforcement. It is now possible to build lightweight and slender concrete structures which are invulnerable to corrosion with the use of fiber reinforcements, which are gradually replacing the corrosion prone steel. This paper describes the construction of faqade panels made of rattan cane reinforcements and steel reinforcements, ten number model sized elements of area 0.15 m2 and a depth of 40 mm were considered, with five panels for each reinforcement type. The elements were subjected to incremental load of 1 kN until failure occurred. Deflections were measured for each element, and crack width was measured at failure load. The results for both types of reinforcements when compared showed the rattan cane reinforced panels failing earlier than the steel reinforced panels. However a lower defection and crack width was recorded in the rattan cane reinforced panel. This paper concludes that the lower crack width formed after failure in the rattan cane reinforced panel gave it advantage over the steel reinforced panel, since it has lower space for the ingress of water which is the main agents of corrosion. 展开更多
关键词 Rattan cane steel reinforcement CORROSION faqade crack width.
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部