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Support for Decision Making in Design of Composite Laminated Structures. Part 1: Parametric Knowledge Model
Applied Composite Materials ( IF 2.3 ) Pub Date : 2018-11-15 , DOI: 10.1007/s10443-018-9741-x
Gilberto Fontecha Dulcey , Xavier Fischer , Pierre Joyot , Georges Fadel

The design process of laminated composites faces two challenges: the engineer designs the product and its morphology, but also, simultaneously, the material. The number of design solutions can be huge since the solution space is very large. Standard CAE systems (CAD, Finite Element Simulation) do not offer to the designer an approach to explore design spaces easily handling design parameters that are intrinsic to the laminate structures: number of plies, layers’ constitutive laws, viscoelastic capacity of the matrix and volume fraction of fibers. This paper provides a new model of behavior making explicit these design parameters. This Parametric and reduced Behavior Model (PRBM) allows engineers to make rapid simulations of the product they are creating. Integrated in a meta-model of Knowledge, it is combined to usual specific knowledge that are typically the domain of composite experts and manufacturing experts. Our PRBM is made from a separated numerical method, next enabling (1) a multiscale approach: the engineer can implement reasoning either at the scale of the fiber, or at the scale of the ply, at the scale of the plies interfaces, at the scale of the lamination or at the scale of the structure, or, (2) a multiphysical approach: the engineer can independently manage the mechanical effect of each ply and each interface, either in static or dynamic cases; in the latter, the creeping behavior can be considered. Two simple cases are presented to illustrate the relevance of the PRBM when simulating composite structures: one under a static load and the having a dynamic behavior.



中文翻译:

支持复合材料叠层结构设计中的决策。第1部分:参数知识模型

层压复合材料的设计过程面临两个挑战:工程师设计产品及其形态,同时还要设计材料。由于解决方案空间很大,因此设计解决方案的数量可能很大。标准CAE系统(CAD,有限元模拟)无法为设计人员提供一种探索设计空间的方法,从而可以轻松处理层压结构固有的设计参数:层数,层的本构律,基质的粘弹性容量和体积纤维部分。本文提供了一种新的行为模型,使这些设计参数变得明确。这种参数化和简化的行为模型(PRBM)使工程师能够快速仿真他们正在创建的产品。集成在知识的元模型中,它与通常是复合材料专家和制造专家的领域的常规特定知识相结合。我们的PRBM是由单独的数值方法制成的,接下来可以实现(1)多尺度方法:工程师可以在纤维尺度或层尺度,层界面尺度, (2)多种物理方法:工程师可以在静态或动态情况下独立管理每个层和每个界面的机械效果;在后者中,可以考虑蠕变行为。提出了两种简单的情况来说明PRBM在模拟复合结构时的相关性:一种在静态载荷下并且具有动态行为。

更新日期:2018-11-15
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