Tensile Properties and Prediction Model of Recombinant Bamboo at Different Temperatures  

作　　者：Kunpeng Zhao Yang Wei Si Chen Kang Zhao Mingmin Ding 

机构地区：[1]College of Civil Engineering,Nanjing Forestry University,Nanjing,210037,China

出　　处：《Journal of Renewable Materials》2023年第6期2695-2712,共18页可再生材料杂志（英文）

基　　金：The authors wish to express their gratitude to the National Natural Science Foundation of China(Nos.51208262,51778300);Key Research and Development Project of Jiangsu Province(No.BE2020703);Natural Science Foundation of Jiangsu Province(No.BK20191390);Six Talent Peaks Project of Jiangsu Province(JZ-017);Qinglan Project of Jiangsu Province for financially supporting this study.

摘　　要：The destruction of recombinant bamboo depends on many factors,and the complex ambient temperature is an important factor affecting its basic mechanical properties.To investigate the failure mechanism and stress–strain relationship of recombinant bamboo at different temperatures,eighteen tensile specimens of recombinant bamboo were tested.The results showed that with increasing ambient temperature,the typical failure modes of recombinant bamboo were flush fracture,toothed failure,and serrated failure.The ultimate tensile strength,ultimate strain and elastic modulus of recombinant bamboo decreased with increasing temperature,and the ultimate tensile stress decreased from 154.07 to 96.55 MPa,a decrease of 37.33%,and the ultimate strain decreased from 0.011 to 0.008,a decrease of 26.57%.Based on the Ramberg-Osgood model and the pseudo‒elastic design method,a predictive model was established for the tensile stress–strain relationship of recombinant bamboo considering the temperature level.The model can accurately evaluate the tensile stress–strain relationship of recombinant bamboo under different temperature conditions.

关 键 词：Recombinant bamboo TEMPERATURE tensile behaviour stress-strain relationship predictive model 

分 类 号：TG113[金属学及工艺—物理冶金]