Academic literature on the topic 'Carrera Unified Formulation, Marine Structures, Component-wise Models'

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Journal articles on the topic "Carrera Unified Formulation, Marine Structures, Component-wise Models"

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Pagani, Alfonso, Stefano Valvano, and Erasmo Carrera. "Analysis of laminated composites and sandwich structures by variable-kinematic MITC9 plate elements." Journal of Sandwich Structures & Materials 20, no. 1 (2016): 4–41. http://dx.doi.org/10.1177/1099636216650988.

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In this paper, classical as well as various refined plate finite elements for the analysis of laminates and sandwich structures are discussed. The attention is particularly focussed on a new variable-kinematic plate element. According to the proposed modelling approach, the plate kinematics can vary through the thickness within the same finite element. Therefore, refined approximations and layer-wise descriptions of the primary mechanical variables can be adopted in selected portions of the structures that require a more accurate analysis. The variable-kinematic model is implemented in the fra
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Petrolo, Marco, and Erasmo Carrera. "High-Fidelity and Computationally Efficient Component-Wise Structural Models: An Overview of Applications and Perspectives." Applied Mechanics and Materials 828 (March 2016): 175–96. http://dx.doi.org/10.4028/www.scientific.net/amm.828.175.

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The Component-Wise approach (CW) is a novel structural modeling strategy that stemmed from the Carrera Unified Formulation (CUF). This work presents an overview of the enhanced capabilities of the CW for the static and dynamic analysis of structures, such as aircraft wings, civil buildings, and composite plates. The CW makes use of the advanced 1D CUF models. Such models exploit Lagrange polynomial expansions (LE) to model the displacement field above the cross-section of the structure. The use of LE allows the improvement of the 1D model capabilities. LE models provide 3D-like accuracies with
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Yan, Yang, Alfonso Pagani, Erasmo Carrera, and Qingwen Ren. "Exact solutions for the macro-, meso- and micro-scale analysis of composite laminates and sandwich structures." Journal of Composite Materials 52, no. 22 (2018): 3109–24. http://dx.doi.org/10.1177/0021998318761785.

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The present work proposes a closed-form solution based on refined beam theories for the static analysis of fiber-reinforced composite and sandwich beams under simply supported boundary conditions. The higher-order beam models are developed by employing Carrera Unified Formulation, which uses Lagrange-polynomials expansions to approximate the kinematic field over the cross section. The proposed methodology allows to carry out analysis of composite structure analysis through a single formulation in global-local sense, i.e. homogenized laminates at a global scale and fiber-matrix constituents at
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Azzara, R., E. Carrera, M. Filippi, and A. Pagani. "Time Response Stress Analysis of Solid and Reinforced Thin-Walled Structures by Component-Wise Models." International Journal of Structural Stability and Dynamics, November 25, 2020, 2043010. http://dx.doi.org/10.1142/s0219455420430105.

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This paper deals with the evaluation of time response analyses of typical aerospace metallic structures. Attention is focussed on detailed stress state distributions over time by using the Carrera Unified Formulation (CUF) for modeling thin-walled reinforced shell structures. In detail, the already established component-wise (CW) approach is extended to dynamic time response by mode superposition and Newmark direct integration scheme. CW is a CUF-based modeling technique which allows to model multi-component structures by using the same refined finite element for each structural component, e.g
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Dissertations / Theses on the topic "Carrera Unified Formulation, Marine Structures, Component-wise Models"

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REHAN, REHAN. "One-dimensional Advanced Beam Models for Marine Structural Applications." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2680980.

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At preliminary design stage, the global mechanical behavior of large marine vessels such as container ships has previously been analyzed idealizing them as a classical beam. These structures are complex and a classical beam idealization significantly compromises important structural behavior associated with cross section warping or in-plane displacements. On the other hand, 3D Finite Element (FE) models have been utilized which are accurate in capturing these details but pose high computational cost. In present work, structural analyses of marine vessels with realistic boundary conditions hav
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PAGANI, ALFONSO. "Component-wise models for static, dynamic and aeroelastic analyses of metallic and composite aerospace structures." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2598370.

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In the framework of structural mechanics, the classical beam theories that are commonly adopted in many applications may be affected by inconsistencies, because they are not able to foresee higher-order phenomena, such as elastic bending/shear couplings, restrained torsional warping and 3D strain effects. Depending on the problem, those limitations can be overcome by using more complex and computationally expensive 2D and 3D models or, alternatively, by adopting refined beam models, to which many scientists have dedicated their research over the last century. % One of the latest contributio
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Conference papers on the topic "Carrera Unified Formulation, Marine Structures, Component-wise Models"

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Carrera, E., A. Pagani, P. H. Cabral, A. Prado, and G. Silva. "Component-Wise Models for the Accurate Dynamic and Buckling Analysis of Composite Wing Structures." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65645.

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In the present work, a higher-order beam model able to characterize correctly the three-dimensional strain and stress fields with minimum computational efforts is proposed. One-dimensional models are formulated by employing the Carrera Unified Formulation (CUF), according to which the generic 3D displacement field is expressed as the expansion of the primary mechanical variables. In such a way, by employing a recursive index notation, the governing equations and the related finite element arrays of arbitrarily refined beam models can be written in a very compact and unified manner. A Component
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Viglietti, Andrea, Enrico Zappino, and Erasmo Carrera. "A Component-Wise Approach for the Failure of Complex Aeronautical Structures." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71249.

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Using advanced beam models based on the Carrera Unified Formulation, this paper presents an analysis of a damaged tapered aircraft structure. Results obtained from static and free vibration analyses are presented to evaluate the evolution of the stress and the modal behaviour in a multi-component damaged structure. This 1-D model is able to modify the material proprieties, then the stiffness, at the local level. In this way, many types of local and global damage can be introduced into the structure. The results show the capability of the present model to obtain with a low computational cost, d
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Carrera, E., A. Pagani, and M. Petrolo. "Static and Dynamic Analysis of Aircraft Structures by Component-Wise Approach." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63600.

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This paper proposes an advanced approach to the analysis of reinforced-shell aircraft structures. This approach, denoted as Component-Wise (CW), is developed by using the Carrera Unified Formulation (CUF). CUF is a hierarchical formulation allowing for the straightforward implementation of any-order one-dimensional (1D) beam theories. Lagrange-like polynomials are used to discretize the displacement field on the cross-section of each component of the structure. Depending on the geometrical and material characteristics of the component, the capabilities of the model can be enhanced and the comp
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Viglietti, Andrea, Enrico Zappino, and Erasmo Carrera. "High-Fidelity One-Dimensional Models for Tapered Structures Analyses." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66681.

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This paper presents the static analysis of tapered structures made of composite material using 1D models. These models are based on a one-dimensional formulation derived using the Carrera Unified Formulation (CUF). This formulation allows us to obtain 3D-like results thanks to the use of polynomial expansions to describe the displacement field over the cross-section. According to the types of expansion used, different classes of refined one-dimensional elements are obtained. In this work the Lagrange expansions were used. The use of LE models allows each structural component to bo considered s
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Cavallo, Tommaso, Alfonso Pagani, Enrico Zappino, and Erasmo Carrera. "A Component-Wise Approach to Analyse a Composite Launcher Structure Subjected to Loading Factor." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66696.

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The space structures are realized by combining skin and reinforced components, such as longitudinal reinforcements called stringers and transversal reinforcements called ribs. These reinforced structures allow two main design requirements to be satisfied, the former is the light weight and the latter is a high strength. Solid models (3D) are widely used in the Finite Element Method (FEM) to analyse space structures because they have a high accuracy, in contrast they also have a high number of degrees of freedoms (DOFs) and huge computational costs. For these reasons the one-dimensional models
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Zappino, Enrico, Marco Petrolo, and Martina Santori. "Layer-Wise Modeling of Temperature Distributions and Degree of Cure to Evaluate Process-Induced Deformation and Residual Stress." In ASME 2024 Aerospace Structures, Structural Dynamics, and Materials Conference. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/ssdm2024-121553.

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Abstract In this work, a cure simulation based on a one-dimensional thermochemical model is used to predict the evolution of temperature and degree of cure along the thickness of the composite component during the curing cycle. The one-dimensional heat transfer governing equation through the thickness is coupled with the curing kinetics of the thermoset composite material. Temperatures and degree of cure are then used for a thermo-mechanical analysis using layer-wise 1D elements based on the Carrera Unified Formulation (CUF). Using 1D models allows for computational costs and enables fast nume
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Schoenholz, Caleb, Enrico Zappino, Marco Petrolo, and Navid Zobeiry. "Accurate Prediction of Process-Induced Deformations in Composites Using Layer-Wise Models and Theory-Guided Probabilistic Machine Learning." In ASME 2024 Aerospace Structures, Structural Dynamics, and Materials Conference. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/ssdm2024-121050.

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Abstract Carbon fiber-reinforced polymer (CFRP) composites are integral to high-performance aerospace applications, offering many exceptional properties such as high specific strength and stiffness. However, despite widespread use, several challenges persist during manufacturing, one of the most prevalent being the mitigation of residual stresses and process-induced deformations (PIDs). Shortcomings of traditional process simulation-based methods commonly employed to predict PIDs often contribute to these challenges. As a result, manufacturers often grapple with inaccurate PID predictions, com
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