Non-destructive prediction of buckling load of axially compressed cylindrical shells using Least Resistance Path to Probing
Non-destructive prediction of buckling load of axially compressed cylindrical shells using Least Resistance Path to Probing
复制标题
DOI：
10.1016/j.tws.2021.108497
复制
发表时间：
2021-10-25
影响因子：
6.4
通讯作者：
Jose, Sandeep
中科院分区：
文献类型：
--
作者：
Ankalhope, Suhas;Jose, Sandeep
局域态的稳定性对于确定轴向受载圆柱壳的非线性屈曲特性具有重要意义。我们通过使用外部扑克仔细地进行了实验，分析了这些局域态。这项研究的重点是评估在不知道主要缺陷位置的情况下，求取不完善(接近完美)圆柱壳的峰值承载能力的实际可行性。尝试了三种不同的方法：方法1-在单个任意位置探测，方法2-在多个位置探测，方法3-在多个位置探测以找到阻力最小的路径(LRP)。结果表明，LRp的确定以及与最小能量垒对应的位置可以显著提高探测过程的效率。
Stability properties of localized states is of great significance in the determination of nonlinear buckling characteristics of an axially loaded cylindrical shell. We have analyzed these localized states with the help of carefully carried out experiments by using an external poker. The focus of this study is on assessing the practical feasibility for obtaining the peak load carrying capacity of an imperfect (near perfect) cylindrical shell, for which no prior knowledge of the location of dominant defect is present. Three different methods are attempted: Method 1-Probing at a single arbitrary location, Method 2 - Probing at multiple locations, Method 3-Probing at multiple locations to find the Least Resistant Path (LRP). The results indicate that the determination of LRP and hence the location which corresponds to the least energy barrier can significantly improve the efficacy of the probing procedure.