Study on the influence of corrosion environment on the static bearing capacity of honeycomb structure

ZHAO Wenqi; HUANG Zihao; CAI Chenzhi; XU Shaopeng

doi:10.16579/j.issn.1001.9669.2026.08.019

Abstract：[Objective]Corrosive environments significantly degrade the load-bearing capacity of honeycomb structures and may even induce structural instability.Investigating this influence is of great importance for engineering applications.[Methods]Firstly,quasi-static compression tests were conducted to compare and analyze the variation patterns of load-bearing capacity for regular hexagonal and square honeycomb structures before and after corrosion,aiming to clarify the differential effects of corrosion on the performance degradation of the two cellular configurations.Secondly,finite element models of both structures were established,and the accuracy of the numerical models was validated through comparison of load-displacement curves.Then,based on the validated numerical models,simulation calculations were performed on regular hexagonal honeycomb structures with different porosities to analyze the effect of porosity on structural strength.Finally,different corrosion degrees were simulated by varying local wall thicknesses,and the degradation patterns of the load-bearing capacity of honeycomb structures in corrosive environments were systematically investigated.[Results]The results show that regular hexagonal honeycomb structures exhibit better stability than square ones.Corrosion has a relatively minor effect on the load-bearing capacity of hexagonal honeycombs,with reductions of 4.58％and 20.53％after 5 and 20 corrosion cycles,respectively,while the corresponding reductions for square honeycombs reach 13.29％and 25.88％.As porosity increases from 70％to 80％,the stress concentration at the structural bottom intensifies and the structural strength decreases.