Topology optimization of fibers orientation in hyperelastic composite material

2020 ◽  
Vol 231 ◽  
pp. 111488 ◽  
Author(s):  
Andre Luis Ferreira da Silva ◽  
Ruben Andres Salas ◽  
Emilio Carlos Nelli Silva ◽  
J.N. Reddy
Keyword(s):  
Composite Material ◽  
Topology Optimization ◽  
Fibers Orientation

Topology optimization for 3D microstructures of viscoelastic composite materials

2021 ◽  
Author(s):  
Jianglin Yang ◽  
Shiyang Zhang ◽  
Jian Li
Keyword(s):  
Composite Material ◽  
Topology Optimization ◽  
Viscoelastic Material ◽  
Effective Properties ◽  
Vibration Damping ◽  
Homogenization Theory ◽  
Viscoelastic Composite ◽  
Viscoelastic Composite Material ◽  
High Stiffness ◽  
Beso Method

Abstract Materials with high stiffness and good vibration damping properties are of great industrial interest. In this paper, a topology optimization algorithm based on the BESO method is applied to design viscoelastic composite material by adjusting its 3D microstructures. The viscoelastic composite material is assumed to be composed of a non-viscoelastic material with high stiffness and a viscoelastic material with good vibration damping. The 3D microstructures of the composite are uniformly represented by corresponding periodic unit cells (PUCs). The effective properties of the 3D PUC are extracted by the homogenization theory. The optimized properties of the composites and the optimal microscopic layout of the two materials phases under the conditions of maximum stiffness and maximum damping are given by several numerical examples.

Optimization Methodology for an Automotive Composite Hood

2013 ◽  
Author(s):  
Alberto Lazzarini ◽  
Alessandro Valgimigli ◽  
Andrea Baldini ◽  
Enrico Dolcini ◽  
Stefano Sangermano
Keyword(s):  
Composite Material ◽  
Topology Optimization ◽  
Automotive Industry ◽  
Point Of View ◽  
Design Phase ◽  
Trial And Error ◽  
Varying Thickness ◽  
Optimization Methodology ◽  
Prototype Phase ◽  
Actual Part

The current emissions regulations lead car manufacturers to look carefully for weight reduction. In the automotive industry the classic trial-and-error approach to design is becoming inadequate and techniques based on optimization are necessary to improve the design process. In this study a methodology to design a sport-car front hood is proposed. The process carried out could also be extended to car components characterised by a similar configuration. Starting from the geometry of the actual part, a design volume has been defined. The first step consists of a topology optimization performed considering the material as isotropic (aluminium properties): the output is a rough structure which accomplishes all the imposed targets. The interpretation of the topology results brings to a re-design phase aimed at realising a feasible component. The subsequent optimization step is dedicated to composite material structures and acts on the component plybook, varying thickness and orientation of each ply to find the best solution complying with targets. Finally, the component has to be reviewed from a technological point of view in order to be virtually delivered and to proceed with the prototype phase.

Fiber Orientation of Composite Materials - Effect on Mechanical Properties

2018 ◽  
Vol 880 ◽  
pp. 273-278
Author(s):  
Mihaela Racila ◽  
Jean Marie Crolet
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Fiber Orientation ◽  
Mathematical Theory ◽  
Numerical Approach ◽  
The Finite Element Method ◽  
Fibers Orientation ◽  
Natural Composite ◽  
Cortical Architecture ◽  
Main Influence

Fiber orientation is essential when we want to predict the behavior of a composite material, also for determining the mechanical properties of such materials. Many researches in this field showed that the orientation of fibers has a major role, for example, in increasing some properties, or decreasing others. Some of these studies are experimental, some are made using only the Finite Element Method (FEM).In this work, we present a numerical approach in order to estimate the influence of the collagen fibers orientation on the mechanical properties of the natural composite, which is human cortical bone. Based on the mathematical theory of homogenization, allowing computing all the elastic (but also piezo and dielectric) properties of a composite material, this study quantifies the main influence of the fibers orientation and its effect on the mechanical properties, but also on the influence of the cortical architecture on mechanical properties.

Topology optimization of composite material with high broadband damping

2020 ◽  
Vol 239 ◽  
pp. 106331
Author(s):  
Heng Zhang ◽  
Xiaohong Ding ◽  
Qian Wang ◽  
Weiyu Ni ◽  
Hao Li
Keyword(s):  
Composite Material ◽  
Topology Optimization

Research on Vulcanization Process of Short Fiber-Rubber Composite Material

2012 ◽  
Vol 501 ◽  
pp. 325-329
Author(s):  
Chuan Sheng Wang ◽  
De Wei Zhang ◽  
Lei Guo ◽  
Xian Kui Zeng ◽  
Xiao Bo Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Physical And Mechanical Properties ◽  
Short Fiber ◽  
Short Fibers ◽  
Iron Wire ◽  
Rubber Composite ◽  
Fibers Orientation ◽  
Vulcanization Process

Vulcanization process is the last step of manufacturing rubber products. For tire tread which is made of short fiber rubber composite material, vulcanization is complex due to during vulcanization process the flow of mixed rubber maybe change short fibers orientation. As a result, during vulcanization process, several pieces of iron wire have been put in the mold to play the role of tire patterns for the first step research. The experimental results indicate that the flow of mixed rubber would not change short fibers orientation greatly, and physical and mechanical properties of short fiber-rubber composite material keep as good as that vulcanized without iron wire.

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