DEVELOPMENT OF CREEP MODELS FOR GLUED LAMINATED BAMBOO USING THE TIME-TEMPERATURE SUPERPOSITION PRINCIPLE
DEVELOPMENT OF CREEP MODELS FOR GLUED LAMINATED BAMBOO USING THE TIME-TEMPERATURE SUPERPOSITION PRINCIPLE
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DOI：
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发表时间：
2015
影响因子：
1.4
通讯作者：
Xinxin Ma;Zehui Jiang;L. Tong;Ge Wang;Haitao Cheng
中科院分区：
文献类型：
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作者：
Xinxin Ma;Zehui Jiang;L. Tong;Ge Wang;Haitao Cheng
本文介绍了用时间-温度叠加原理建立胶合竹材（GLB）蠕变模型。蠕变（15分钟）和恢复（45分钟）数据在25至65℃的恒定温度水平下获得。试验试样含水率分别为干、7%和12%。每个温度下的单独曲线与对数-时间轴作对比，得到一条主曲线。采用非线性回归分析估计模型参数。然后，利用时间-温度-水分原理，将单个温度主曲线再次移到参考MC中，构建整体温度主曲线。分析了温度和湿度变化因子loga （T， M）与温度(T)和MC (M)的关系。结果表明，TTSP可以成功地应用于不同含水量的GLB测试。
This paper describes the development of creep models for glued laminated bamboo (GLB) using the time-temperature superposition principle (TTSP). Creep (15 min) and recovery (45 min) data were obtained at constant temperature levels ranging from 25 to 65C. The moisture contents of specimens for testing were dry, 7% and 12%. The individual curve at each temperature was plotted against the log-time axis to obtain a master curve. A nonlinear regression analysis was used to estimate the model parameters. Then the individual temperature master curves were shifted again to a reference MC to construct an overall master curve using time-temperature-moisture principle. The relation of temperature and moisture shift factors loga (T, M) to temperature (T) and MC (M) was analyzed. The results show that the TTSP was successfully applied to GLB tested at different moisture contents.