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Optimizing Material Use in Blade Design by Improving Failure Prediction Methodology and Introducing Damage Tolerant Concepts in FRP Composites

机译:通过改善FRP复合材料中的故障预测方法,通过改善故障预测方法,在FRP复合材料中引入损坏耐受概念优化材料

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Preliminary results are presented in this work, concerning the validation of a reliable FEM tool under development, featuring damage tolerant concepts, to enhance design capabilities and optimize material use in large composite structures. User defined material constitutive equations concerning anisotropic non-linearity and material stiffness degradation as a result of damage accumulation, are implemented to model inherent damage tolerance of Fiber Reinforced Plastic (FRP) materials. Besides popular anisotropic failure conditions included in commercial FE codes, criteria that distinguish between different failure modes, e.g. Puck, are implemented and their performance is assessed. Material property characterization and verification tests for validating the predictive capabilities of the numerical procedure were part of the OPTIMAT BLADES, an EC funded research project.
机译:在这项工作中提出了初步结果,关于在开发中的可靠有限元工具的验证,具有损坏的宽容概念,提高设计能力,并优化大型复合结构的材料。用户定义的材料本构成关于各向异性非线性和材料刚度降解的材料本构恒定的方程,用于模拟纤维增强塑料(FRP)材料的固有损伤容差。除了包括在商业FE代码中的流行各向异性故障条件,可以区分不同故障模式的标准,例如,冰球是实施的,并评估其表现。用于验证数值程序的预测能力的材料性质表征和验证测试是EC资助的研究项目的优选刀片的一部分。

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