ACTA AERONAUTICAET ASTRONAUTICA SINICA >
A new global-local higher order model for laminated composite beams
Received date: 2024-12-26
Revised date: 2025-01-23
Accepted date: 2025-02-27
Online published: 2025-03-06
Supported by
Daqing City Guided Science and Technology Plan Project(ZD-2024-25)
To accurately calculate displacements and stresses of laminated composite beams under static loading， this paper develops a new model for laminated beams. The initial displacement field of the model includes two parts which are global and local displacements. Each layer of laminated beams can be depicted by local displacement unknown variables and shape functions. By applying the interlayer displacement and shear stress continuous conditions， as well as the free conditions for transverse shear stress on up-down surfaces of the laminated beam， the final displacement field of the model is obtained， expressed by six unknown displacement variables. Finally， through a classical example， numerical results of the model show that this theory can accurately calculate the in-plane displacements and stresses of laminated beams under static loading conditions. Notably， the transverse shear stress can be directly obtained from constitutive equations without any additional processing， making the model convenient for engineering applications.
Junling SI , Shengqi YANG , Ying ZHANG . A new global-local higher order model for laminated composite beams[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(18) : 231719 -231719 . DOI: 10.7527/S1000-6893.2025.31719
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