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该文开发了不协调实体有限元单元和升温下的三维本构关系模型用于受弯构件在温升情况下的行为分析,解决了本构增量算法在进行温升分析时出现已收敛应力闭锁问题。在通过有限元模型模拟结果与理论解以及其它软件模拟结果的比较表明该模型可以很好地用于结构在火灾中的分析。
In this paper, the uncoordinated finite element element and the three-dimensional constitutive model under heating are developed for the behavior analysis of flexural members under the condition of temperature rise. The convergence of the constitutive increment method to temperature rise is solved Blocking problem. The comparison between simulation results and theoretical solutions through finite element model and other software simulation results shows that the model can be well used in the analysis of fire structure.