- 摘 要
-
周海濤1,2，張毅剛1,3，吳金志1，劉文超1
（1 北京工業(yè)大學(xué)大跨空間中心，北京100124; 2 河南城建學(xué)院，平頂山467001; 3 北京工業(yè) 大學(xué)城市與工程安全減災(zāi)省部共建教育部重點實驗室，北京100124）[摘要] 大跨空問結(jié)構(gòu)災(zāi)變的精確化分析的基礎(chǔ)和關(guān)鍵是精確化數(shù)值材料本構(gòu)模型的建立，在單向拉伸應(yīng)力應(yīng)變曲線的基礎(chǔ)上，把材料軟化效應(yīng)、材料硬化效應(yīng)和損傷效應(yīng)三者有機的結(jié)合，提出了一種新的三線性材料數(shù)值模型，并開發(fā)了相應(yīng)的適用于梁單元的計算方法，通過單向拉伸試驗算例和懸臂柱雙向水平試驗算例的仿真計算證明該材料模型和算法正確。
[關(guān)鍵詞] 全過程；材料軟化；三線性；硬化效應(yīng)Material model with intenerating effect considered
Zhou Haitao1,2, Zhang Yigang1,3, Wu Jinzhi1, Liu Wenchao1
(1 Spatial Structures Research Center of BJUT, Beijing 100124, China; 2 Hernan University of Urban Construction, Pingdingshan 467001, China; 3 Key Lab. ofUrban Security and Disaster Engineering, MOE, Beijing 100124, China)Abstract: Precise analysis on large-span spatial structures depends on accurate numerical material constitutive model, According to the axial tension stress-strain curve, the paper proposes a new numerical multiline material model, with material effects of intenerating effect, material hardening effect and damage effects considered, and corresponding calculation method applicable to beam element. Simulation of axial tension test and bi-level loading test on cantilever column proves that the material model and algorithm are effective and correct.
Keywords: whole process; materialintenerating; multiline; hardening effect
