文献类型：期刊文献

英文题名：Flexural creep behavior of hierarchical bamboo structure using time-temperature-stress superposition principle

作者：Peng, Hui[1] Jiang, Juan[1] Zhan, Tianyi[1] Jiang, Jiali[2] Lyu, Jianxiong[1,2]

第一作者：Peng, Hui

通信作者：Lyu, JX[1]

机构：[1]Nanjing Forestry Univ, Co Innovat Ctr Efficient Proc & Utilizat Forest R, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Hunan Collaborat Innovat Ctr Effect Utilizing Woo, Beijing 100091, Peoples R China

年份：2022

卷号：190

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20224513071393);Scopus(收录号：2-s2.0-85141223414);WOS:【SCI-EXPANDED(收录号:WOS:000985706600007)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant Numbers. 32101454, 31971591).

语种：英文

外文关键词：Bamboo; Hierarchical structure; Creep; Time-temperature equivalence; Time-temperature-stress equivalence

摘要：The long-term flexural creep properties of graded hierarchical bamboo are important to structural design in civil construction. The present study conducted the short-term flexural creep tests at a series of temperature (30-170 degrees C) and stress (7-15 MPa) conditions, for the bamboo from both inner and outer parts. The application of time-temperature superposition principle (TTSP) and time-temperature-stress superposition principle (TTSSP) was analyzed for the creep behavior of bamboo with regard to hierarchical structure. The results confirmed the feasibility of TTSP and TTSSP in flexural creep of bamboo by horizontal shifting. A creep model based on Findley power law was successfully employed to predict the flexural creep response of bamboo. Additionally, the sample from inner part of bamboo displayed a more pronounced flexible creep response compared with the sample from outer part, attributing a low fiber volume fraction in inner part due to bamboo growth strategy. The findings in this study broaden the knowledge of bamboo rheology, and is helpful for further work on the bamboo growth strategy effect on mechanical properties.