Damage characteristics analysis of composite laminates with filled nail holes under tensile load

doi:10.19936/j.cnki.2096-8000.20230328.013

Abstract

Abstract: Composite laminates filled with pin holes are often used in mechanical connection design. Considering the bolt constraint at the opening and the bypass failure of extrusion deformation in the area around the pin hole of the laminate, they are mainly used for the design of strength allowable values of aircraft composite structures, and are increasingly widely used in aerospace and other fields. In order to compare the tensile damage propagation failure characteristics of composite laminates with filled pin holes based on different failure criteria, two-dimensional and three-dimensional finite element models were established using ABAQUS finite element software. The nonlinear behavior of materials and failure judgment were considered in the modeling. Based on Hashin criterion and LaRC05 criterion, the static tensile numerical simulation of composite laminates with filled pin holes in the corresponding stacking sequence was carried out. According to ASTM D6742, uniaxial tensile test of composite laminates with filled pin holes was carried out. The numerical simulation results were compared with the test results. The numerical simulation results simulated the tensile progressive failure mode of composite laminates with filled pin holes, which has good engineering application significance.

Key words: composite laminates, extended finite element method, LaRC05 criterion, Hashin criterion, tensile failure, damage characteristics

CLC Number:

TB332

ZHANG Huanshi, ZHANG Fa, GAO Limin, JIA Yinlei. Damage characteristics analysis of composite laminates with filled nail holes under tensile load[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 89-94.

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