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"China Aviation News": Over the past two decades, the use of composite materials has been significantly improved, what do you think is the main reason driving this trend?

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"China Aviation News": Over the past two decades, the use of composite materials has been significantly improved, what do you think is the main reason driving this trend?

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2019/03/29 10:58
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[Abstract]:
"China Aviation News": Over the past two decades, the use of composite materials has been significantly improved, what do you think is the main reason driving this trend?
"China Aviation News": Over the past two decades, the use of composite materials has been significantly improved, what do you think is the main reason driving this trend?
 
John O'Connor: global concern about environmental protection and fuel economy, making people in the aerospace and automotive industries are increasingly concerned about efficiency. This will drive a number of related companies included the introduction of advanced materials, including composite materials in their products. Wherein the composite material is its remarkable strength, specific modulus allows the company to have greater possibilities to design more environmentally friendly fuel more economical products, at the same time, the clear trend is also driven professional composites engineering software such Fibersim, to help these units designed and manufactured to meet the needs of its composite products.
 
"China Aviation News": composite and traditional materials between the finite element analysis and structural design of different?
 
John O'Connor: traditional materials such as finite element analysis and structural design of the metal material is generally an isotropic material. Composite material is not isotropic. Composite material is extremely complex, indivisible plies through a similar "assembly" approach and the unique manufacturing process for manufacturing, such as manual or automatic tape laying plated / fiber placement. This means that the performance of the composite structure and the type of material, geometry, and manufacturing processes have a relationship. These must be taken into account in the composite finite element analysis and structural design.
 
If you do not have professional tools, the complex composite laminate properties in the structural design and finite element analysis for data transfer, usually a difficult task. In most cases, despite the understanding of material properties is very detailed, but how to analyze actual among composite structures remains a challenge. These challenges come from two aspects: First, complex composite properties design phase in the project stage it is difficult to achieve full sharing of data, which led to the difficult accurate finite element analysis. This also leads to approximate and uncertainty design phase. Secondly, 'fiber direction Theory' design phase and the production process is usually defined in the 'actual fiber orientation' inconsistent. This means that the basis of the composite material properties are usually not completely understood, because the direction of the fibers is a key determinant of its properties.
 
The key to solving these two problems is to provide an appropriate definition of composite materials, can consider the type of material, design methods and manufacturing methods. This definition captures a complete composite design detail and the ability to help define the detailed finite element model of composite materials to improve the finite element analysis engineer in the analysis result, reduce excessive design but also fully optimize the entire structure. Fibersim It provides an effective tool for this critical capability.
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