Feng, Y.Sheikh, A.H.Ng, C.-T.Smith, S.T.2023-09-122023-09-122024Mechanics of Structures and Machines, 2024; 52(8):5147-51731539-77341539-7742https://hdl.handle.net/2440/139427Published online: 22 Aug 2023A higher order model having sub-laminate capabilities for dynamic analysis of intact or delaminated composite and sandwich beams are presented. Each sub-laminate considered cubic and quadratic through-thickness variations for axial and transverse displacements respectively. The presence of displacement fields at the external surfaces of the sub-laminates helps to conveniently stack multiple sub-laminates by no additional treatments. The model has the flexibility in choosing the number of sub-laminates that provides the flexibility of controlling accuracy and computational efficiency. Central to the model is the development of a C0 continuous displacement based beam element. A thorough validated of the model is conducted using a wide range of problems having different structural configurations and dynamic loading. The model is then employed to investigate the behavior of new sandwich beam problems with multiple de-laminations under dynamic loads to study the influence of different delamination configurations. New results generated during this process can serve as benchmark data for future research.en© 2023 Informa UK LimitedHigher-order beam model; sub-lamination; dynamic analysis; composite and sandwich beams; delaminationJournal article10.1080/15397734.2023.22485002023-09-11653972Feng, Y. [0000-0003-1898-5912]Sheikh, A.H. [0000-0002-2839-1707]Smith, S.T. [0000-0002-8837-1214]