罗  靓，刘本玉，牛钲昊
(云南大学城市建设与管理学院，昆明650091)

[摘要] 根据单块土坯卧压强度试验的数据，采用邓肯一张非线性弹性模型进行计算，绘制出土坯的应力一应变曲线。利用ANSYS有限元分析软件，对土坯墙结构建立体模型和面模型并进行模态分析，得到了两种模型的前6阶自振频率和振型。分析结果表明通过合理地设置参数，可以采用简单的面模型替代复杂的体模型进行动力学分析，使建模过程和计算过程更为简化。
[关键词] 土坯墙结构；动力特性；ANSYS软件；模态分析

    Influence of different finite element model on the dynamic characteristics of adobe wall structure
    Luo Liang, Liu Benyu, Niu Zhenghao
    (Department of Urban Construction and Management, Yunnan University, Kunming 650091, China)

Abstract: By used Duncan-Chang nonlinear elastic model for calculation, the stress-strain curve of adobe was drawn out on the basis of the data of horizontal compressive strength test on single-block adobe.A solid model and a surface model of adobe wall structure were taken into account here for modal analysis in the use of ANSYS general software. The first six vibration frequencies and modes were obtained. The results show that a simple surface model could be used for dynamic analysis instead of a complex solid model by means of setting parameters reasonably. This can make the modeling process and the calculation process more simplified.
Keywords: adobe wall structure; dynamic characteristics; ANSYS software; modal analysis