Multiscale analysis of multilayer printed circuit board using Mechanics of Structure Genome
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23 Jan 2019 | Contributor(s): Fei Tao, Xiuqi Lyu, Xin Liu, Wenbin Yu
The structure of Printed Circuit board (PCB) is very complicated because it consists of woven composites and custom defined conducting layers. To improve the reliability of PCB, it is critical to predict the constitutive relations accurately. This study by implementing Mechanics of Structure...
Micromechanics Simulation Challenge Level I Results
30 Jun 2015 | Publications | Contributor(s): Andrew J Ritchey, Hamsasew Sertse, Johnathan Goodsell, Wenbin Yu, Byron Pipes
The initial results of level I of micromechanics simulation challenge were documented in the attached paper which is also included in the proceedings of American Society of Composites 30th Annual Technical Meeting at Michigan State. Results for various composites including fiber...
Structure Genome: Fill the Gap between Materials Genome and Structural Analysis
29 Nov 2014 | Publications | Contributor(s): Wenbin Yu
A new concept, Structure Genome (SG), is proposed to fill the gap between materials genome and structural analysis. SG acts as the basic building block of the structure connecting materials to structures and the mechanics of SG governs the necessary information to link materials genome and...
Variational Asymptotic Modeling of Composite Dimensionally Reducible Structures
09 Nov 2014 | Publications | Contributor(s): Wenbin Yu
This is Prof. Yu's PhD dissertation. In this disseration, the variational asymptotic method has be used to provide a systematic, holistic, and rigorous approach to construct efficient yet accurate models for composite beams, plates, and shells.
A Unified Theory for Constitutive Modeling of Composites
18 Apr 2016 | Publications | Contributor(s): Wenbin Yu
A unified theory for multiscale constitutive modeling of composites is developed using the concept of structure genomes. Generalized from the concept of the representative volume element, a structure genome is defined as the smallest mathematical building block of a structure. Structure...
A Last Paper: An Equivalent Plate Modeling of Corrugated Structures
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23 May 2014 | Publications | Contributor(s): Wenbin Yu, Zheng Ye, Victor Berdichevsky
An equivalent classical plate model of corrugated structures is derived using the variational asymptotic method. Starting from a thin shell theory, we carry out an asymptotic analysis of the strain energy in terms of the smallness of a single corrugation with respect to the characteristic length...
Mathematical Construction of a Reissner–Mindlin Plate Theory for Composite Laminates
03 Jun 2015 | Publications | Contributor(s): Wenbin Yu
A Reissner–Mindlin theory for composite laminates without invoking ad hoc kinematic assumptions is constructed using the variational-asymptotic method. Instead of assuming a priori the distribution of three-dimensional displacements in terms of two-dimensional plate displacements as what is...
A Critical Assessment of Computer Tools for Calculating Composites Wind Turbine Blade Properties
16 Mar 2015 | Publications | Contributor(s): Wenbin Yu
The purpose of this paper is to critically assess several computer tools for calculating the inertial and structural properties of wind turbine blades. The theoretical foundation of each tool is briefly summarized, and the advantages and disadvantages of each tool are pointed out. Several...
Assess the Accuracy of the Variational Asymptotic Plate and Shell Analysis (VAPAS) Using the Generalized Unified Formulation (GUF)
19 Nov 2015 | Publications | Contributor(s): Wenbin Yu
The accuracy of the Variational Asymptotic Plate and Shell Analysis (VAPAS) is assessed against several higher order, zig zag,and layerwise theories generated by using the invariant axiomatic framework denoted as Generalized Unified Formulation (GUF).These theories are also compared against the...
A Novel Approach to Analyze Beam-like Composite Structures Using Mechanics of Structure Genome
08 Sep 2016 | Publications | Contributor(s): Xin Liu, Wenbin Yu
A novel approach to the analysis of beam-like composite structure is introduced in this paper. New software Gmsh4SC is developed based on two well-known open source codes Gmsh and CalculiX. One-dimensional Euler-Bernoulli and Timoshenko type finite elements are derived based on the constitutive...
Generalized Free-Edge Stress Analysis Using Mechanics of Structure Genome
22 Aug 2016 | Publications | Contributor(s): Bo Peng, Johnathan Goodsell, Byron Pipes, Wenbin Yu
This work reveals the potential of mechanics of structure genome (MSG) for the free-edge stress analysis of composite laminates. First, the cross-sectional analysis specialized from MSG is formulated for solving a generalized free-edge problem of composite laminates. Then, MSG and the companion...
Initial failure strength prediction of woven composites using a new yarn failure criterion constructed by deep learning
05 Jun 2019 | Publications | Contributor(s): Xin Liu, Federico Gasco, Johnathan Goodsell, Wenbin Yu
A new failure criterion for fiber tows (i.e. yarns) is developed based on a micromechanical model using mechanics of structure genome (MSG) and deep learning neural network. The proposed failure criterion can be applied to yarns in mesoscale textile composites modeling while capturing the failure...
Constitutive modeling for time- and temperature-dependent behavior of composites
08 Jan 2020 | Publications | Contributor(s): Orzuri Rique, Xin Liu, Wenbin Yu, Byron Pipes
Structural integrity, durability, and thermal stability represent critical areas for adequately modeling the behavior of composite materials. Polymeric matrices are prone to have time-dependent behavior very sensitive to changes in temperature that influence the effective properties of the...
Adaptive Sampling Assisted Surrogate Modeling of Initial Failure Envelopes of Composite Structures
10 Nov 2020 | Publications | Contributor(s): Su Tian, Wenbin Yu
A Unified Approach for Thermoelastic Constitutive Modeling of Composite Structures
07 Feb 2019 | Publications | Contributor(s): Xin Liu, Wenbin Yu, Federico Gasco, Johnathan Goodsell
Mechanics of structure genome (MSG) has been extended to provide a unified approach to predict the thermoelastic behaviors of composite structures. The variational statement of the MSG models has been modified to capture pointwise temperature distribution in composite structures. The effective...