期刊
COMPOSITE STRUCTURES
卷 285, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2021.115011
关键词
Laminated composite plate; Isogeometric analysis; Collocation method; First -order shear deformation theory; Adaptive mesh refinement strategy
资金
- National Research Foundation (NRF)
- Singapore, SMRT, Singapore
- Nanyang Technological University, Singapore
An isogeometric meshfree collocation approach is developed for analyzing laminated composite plates, which reduces computational cost and improves convergence rate. By using the first-order shear deformation plate theory, only one element is modeled through the thickness, demonstrating robustness and efficacy through benchmark problems. The method yields more accurate results at a similar convergence rate compared to traditional methods and investigates the effects of changing parameters on structural analysis.
An isogeometric meshfree collocation (IMC) approach is developed for the static, free vibration, and buckling analyses of laminated composite plates. As a promising alternative to the Galerkin method, the collocation method is introduced into the isogeometric analysis framework to reduce the computational cost and improve the convergence rate. An adaptive refinement strategy based on the gradient of strain energy is further imple-mented to generate more accurate results with higher computational efficiency. By adopting the first-order shear deformation plate theory, only one element is required to be modeled through the thickness of the laminated composite plate with homogenized material properties. The robustness and efficacy of the proposed method are demonstrated through a series of benchmark problems. It is found that the proposed approach can yield more accurate results at a similar convergence rate than its isogeometric analysis collocation counterpart. The effects of changing parameters such as the Young's modulus ratio, thickness-to-span ratio, and orthotropy angle on the structural analysis of composite plates are subsequently investigated in detail under different boundary and loading conditions. The simulation results are in good agreement with reference solutions.
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