A NEW SHELL ELEMENT FOR THERMAL-STRUCTURAL ANALYSIS OF STRUCTURE IN FIRE

摘要：

Thermal deformation of ablaze floors in steel frame structures under localized fire conditions caused by thermal radiation and thermal convection deserves attention. In order to predict the deformation accurately,a kind of finite element scheme was derived to analysis mechanical behavior of fired floors. By this scheme,not only the average temperature but also the temperature gradient along the thickness direction can be considered. Temperature distribution was assumed as linear along thickness direction. Thermal radiation and thermal convection were expressed in heat transfer field equation in the form of heat,and the heat distribution was supposed to be linear along thickness direction. Transient temperature and thermal deformation of this element was practically calculated,which proved that numerical solutions accord with theoretical solutions well. The calculation also indicate that considering the bending load caused by temperature difference along thickness direction or not has great influence on thermal deformation of such element. This paper demonstrates the numerical simulation effectiveness on thermodynamical response of the new element.

关键词： Thermal deformation Temperature gradient Finite element scheme Linear distribution Transient temperature field Numerical simulation

作者: Yong Ding Shu-Qing Kong Zhong-Bao He Zhi-Kun Yao Xin-Tang Wang

作者单位: Department of Civil Engineering,Ningbo University,Ningbo 315211,P.R. China Ningbo Communication Planning and Prospecting Design Academy,Ningbo 315000,P.R.China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 2247-2251

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）