Tomasz Garbowski , Aram Cornaggia , Tomasz Gajewski , Jakub K. Grabski , Damian Mrówczyński
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引用次数: 0
Abstract
This paper presents a two-step inverse-based numerical homogenization framework for the mechanical characterization of converted corrugated board. The methodology combines high-fidelity 3D simulations with global plate modeling, enabling the extraction of homogenized stiffness parameters that account for imperfections such as fluting flattening and local degradation of paper properties during converting processes. In the first step, a 3D finite element model of a corrugated structure is perturbed to simulate realistic imperfections. The mechanical response is computed for multiple loading conditions. A simplified homogenized plate model is then calibrated using inverse optimization to match the 3D response, resulting in an identified plane stress membrane, bending and shear components known from the standard plate and shell theories of orthotropic materials In the second step, these reference stiffness values are used to inversely identify the geometric and material parameters of the constituent layers. The design variables include fluting geometry and the thickness and orthotropic elastic properties of each paper layer. The optimization reveals which parameters have the strongest influence on global behavior, offering insights into process sensitivity. The proposed method provides a robust and efficient path from microstructural features to global mechanical performance, suitable for design and quality control in industrial packaging applications. The framework may also be extended using neural networks for rapid estimation, enabling integration into broader simulation pipelines.
期刊介绍:
The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials.
The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.