余新盟, 查晓雄. 用不协调实体单元进行梁构件温升分析[J]. 工程力学, 2011, 28(增刊I): 12-015.
引用本文: 余新盟, 查晓雄. 用不协调实体单元进行梁构件温升分析[J]. 工程力学, 2011, 28(增刊I): 12-015.
YU Xin-meng, ZHA Xiao-xiong. AN INCOMPATIBLE SOLID ELEMENT FOR BEAM ANALYSIS AT ELEVATED TEMPERATURES[J]. Engineering Mechanics, 2011, 28(增刊I): 12-015.
Citation: YU Xin-meng, ZHA Xiao-xiong. AN INCOMPATIBLE SOLID ELEMENT FOR BEAM ANALYSIS AT ELEVATED TEMPERATURES[J]. Engineering Mechanics, 2011, 28(增刊I): 12-015.

用不协调实体单元进行梁构件温升分析

AN INCOMPATIBLE SOLID ELEMENT FOR BEAM ANALYSIS AT ELEVATED TEMPERATURES

  • 摘要: 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。

     

    Abstract: An incompatible 8-node solid element and a 3D constitutive relationship algorithm at elevated temperatures are developed for modeling of structures subjected to bending at elevated temperatures. The phenomenon of initially converged stress locking of incremental constitutive algorithm at elevated temperatures is identified and solved. Numerical studies show that the current model can model the structures in bending accurately and efficiently.

     

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