Optimal Elastic Design of CFCs
Optimal Elastic Design of CFCs
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CFC 的优化弹性设计
DOI：
10.4028/www.scientific.net/kem.488-489.295
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Y. Sinchuk
中科院分区：
文献类型：
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作者：
G. Stasiuk;R. Piat;Y. Sinchuk
拟议研究的目的是开发具有规定弹性性能的碳/碳复合材料。为了实现这一目标，制定了用于估计具有规定刚度的微观结构的微观结构优化问题。所提出问题的设计变量是局部纤维分布和孔隙率。整个微观结构中纤维和孔隙的体积分数是固定的。使用虚拟模型计算复合材料局部微观结构的材料特性。半分析均质化程序用于开发这些模型。将建模结果与通过散装材料的拉伸和压缩测试以及超声波研究实验获得的弹性特性进行比较。提出了三点弯曲试验微观结构的设计方法。
The aim of the proposed studies is the development of the carbon/carbon composite with prescribed elastic properties. To achieve this, a microstructure optimisation problem for estimation of the microstructure with prescribed stiffness is formulated. The design variables of the posed problem are the local fibers distribution and porosity. The volume fractions of the fibers and pores in the whole microstructure are fixed. Material properties of the local microstructure of the composite are calculated using virtual models. Semi-analytical homogenization procedures were used for the development of these models. Modeling results are compared with elastic properties obtained experimentally by tension and compression test and ultrasonic studies of the bulk material. Approach to design microstructure for three point bending test is proposed.