- 摘 要
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羅 靚，劉本玉，牛鉦昊
(云南大學(xué)城市建設(shè)與管理學(xué)院，昆明650091)[摘要] 根據(jù)單塊土坯臥壓強(qiáng)度試驗的數(shù)據(jù)，采用鄧肯一張非線性彈性模型進(jìn)行計算，繪制出土坯的應(yīng)力一應(yīng)變曲線。利用ANSYS有限元分析軟件，對土坯墻結(jié)構(gòu)建立體模型和面模型并進(jìn)行模態(tài)分析，得到了兩種模型的前6階自振頻率和振型。分析結(jié)果表明通過合理地設(shè)置參數(shù)，可以采用簡單的面模型替代復(fù)雜的體模型進(jìn)行動力學(xué)分析，使建模過程和計算過程更為簡化。
[關(guān)鍵詞] 土坯墻結(jié)構(gòu)；動力特性；ANSYS軟件；模態(tài)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
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