Zanker Hayden, Rajabipour Ali, Huang Dongsheng, Bazli Milad, Tang Siyuan, Cui Zhaoyan, Zhu Jia, Kennaway Joel, Diaz Luis Herrera
College of Engineering, IT & Environment, Charles Darwin University, Darwin 0801, Australia.
National Engineering Research Center of Biomaterials, Nanjing Forestry University, Nanjing 210037, China.
Polymers (Basel). 2023 Jan 31;15(3):711. doi: 10.3390/polym15030711.
The present study investigates the phenomena of creep in a bamboo composite. The material was tested under tensile and compressive loading and simulated in finite element analysis software to estimate the creep coefficients. The presented findings have displayed the material's propensity to fail at loads lower than the recorded ultimate strength, as early as 65% of this strength within 100 h, showing the importance of considering creep when designing structural components. Larger resistance to creep was observed under tensile stresses. Coefficients of the time-hardening creep model were estimated, which were found to be different under compression and tension. The findings provide insight into the reliable strength value of the Bamboo Composite. They could be also essential in estimating the long-term deflations in Bamboo Composite structures.
本研究调查了竹复合材料中的蠕变现象。对该材料进行了拉伸和压缩载荷测试，并在有限元分析软件中进行模拟以估计蠕变系数。研究结果表明，该材料在低于记录的极限强度的载荷下就有失效的倾向，早在100小时内达到该强度的65%时就会失效，这表明在设计结构部件时考虑蠕变的重要性。在拉应力下观察到更大的抗蠕变性。估计了时间硬化蠕变模型的系数，发现其在压缩和拉伸时不同。这些发现为竹复合材料的可靠强度值提供了见解。它们对于估计竹复合材料结构中的长期挠度也可能至关重要。
