摘要
基于燃烧模型和结构力学模型,提出火-热耦合与热-力耦合之间的温度场转化方法。基于Python语言编写相应程序,可以实现温度场的自动转换。在此方法基础上,结合FDS与ABAQUS给出了多场耦合的建筑火灾数值模拟方法。并将此方法应用于某一农贸市场火灾,进行了火-热耦合与热-力耦合的数值模拟,得出温升、应力、形变随时间的变化,并与火灾勘验结果对比,验证该方法的可行性。
Based on combustion model and structural mechanics model, a temperature field conversion method between fire ther- mal coupling and thermal force coupling was put forward. Relative program was written by Python language to realize the free conver- sion of temperature field. Based on this method, combined with FDS and ABAQUS, a multi field coupled building fire numerical simulation method was presented. The method was applied on a fire in a farmer＇s market, and the numerical simulation of coupled fire thermal and coupled thermal mechanical was carried out to ob- tain the change of temperature rise, force and deformation with time. The feasibility of the method was verified by comparing with the fire investigation results.
出处
《消防科学与技术》
CAS
北大核心
2017年第11期1504-1507,共4页
Fire Science and Technology
基金
国家自然科学基金项目"基于结构损伤的建筑火灾再现耦合问题的数值计算方法研究"(11272214)
国家自然科学基金项目"基于结构塌落的高层建筑火灾事故逆向动力学研究及应用"(11672184)
关键词
温度场转化
多场耦合
有限元软件
农贸市场
火灾
temperature field transformation
multi field coupling
finite element
wholesale market
fire accident
