Study on the crack expansion law of laminated porous structure
XU Shuang
DENG Qingtian
LI Wangfei
LI Xinbo
SONG Xueli
WEN Jinpeng
Abstract：Based on two basic configurations of hexagonal and inner concave shapes,by utilizing experimental test and finite element simulation method,the crack expansion law of laminated porous structures under three-point bending was studied,the influence of cellular element angle of laying direction on failure mode,load capacity,and deformation of the laminated porous structures was discussed.The results indicate that the crack expansion path in the bilayer model deviates towards the weaker layer with less crack expansion inhibition capability.The weaker side experiences greater deformation,leading to a deviation of the model towards the stronger side.Under certain angle combinations,the bilayer model shows significantly improved load-bearing capacity and toughness compared to the corresponding single-layer model.
Keywords：Laminated porous structureThree-point bending experimentCrack expansionPolylactic acid LA material
Publication Date：2025-04-14
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：9( 28-36 )