材料科学
压缩(物理)
机制(生物学)
复合材料
应变能
断裂(地质)
失效机理
拉伤
弹性能
结构工程
机械
有限元法
工程类
物理
热力学
医学
量子力学
内科学
作者
Tao Zhu,Huang Feng,Xingchen Liu
标识
DOI:10.1016/j.matlet.2023.135196
摘要
This paper uses the macroscopic stress–strain curve of foamed concrete under uniaxial compression as a baseline reference, combining the micro-failure mechanisms of the internal structure and the laws of energy evolution to explain the macroscopic mechanical behavior. This study proposes the mechanisms behind pore fracture and recombination, as well as the mechanical interactions within thin-walled structures. The fractured structure swiftly fills and restores the framework, while the reticulated thin-walled structure adjusts transmission pathways for forces, inducing dormant elastic strain energy and thereby prolonging the interval of residual strain. Coupled with macroscopic laws dictating energy evolution, this paper elaborates on the influence of microscopic structures on stress–strain characteristics. The capacity of foam concrete to proficiently absorb and dissipate external energy, thereby extending the duration of the strain process, and its potential as a buffering material are substantiated.
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