AHSS: Development of Novel Finite Element Simulation Tools that Implement Crystal Plasticity Constitutive Theories Using an Efficient Spectral Framework

AHSS：开发新型有限元仿真工具，使用高效的谱框架实现晶体塑性本构理论

• 批准号: 1341888
• 负责人: Surya Kalidindi
• 金额: $ 15.7万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-12-31 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1341888&HistoricalAwards=false
• 关键词: AHSS; Development; Novel; Finite; Element

Predictive tools used in simulating wrought alloy manufacturing processes and final product performance predominantly employ phenomenological constitutive theories. Such models are proving inadequate for various applications. On the other hand, physics based crystal plasticity models have enjoyed remarkable success in predicting anisotropic mechanical response and the concurrent evolution of the underlying crystallographic texture in finite plastic deformation of several polycrystalline metals. However, these tools are extremely computationally expensive. It is proposed to develop spectral crystal plasticity based finite element tools for simulating deformation processing operations and mechanical performance of Advanced High Strength Steels (AHSS) with computational times that are comparable to the tools currently used by the industry. AHSS represent a broad class of steels with dramatic improvements in properties over traditional steels. The proposed collaboration with two major industries will ensure that the tools developed will be rapidly adopted into the commercial environment. The proposed interdisciplinary research cuts across materials science, mechanical engineering and applied mathematics and will contribute significantly to the development of skilled human resources in critical science and technology fields. Furthermore, funding for this proposal will positively impact the initiatives already underway at Drexel University to ensure inclusion of traditionally under-represented minorities and women in engineering.

用于模拟锻造合金制造工艺和最终产品性能的预测工具主要采用现象学组成理论。这种模型证明了各种应用程序不足。另一方面，基于物理的晶体可塑性模型在预测各向异性机械响应和基础晶体质地的同时演变方面取得了显着的成功，这是几种多晶金属有限的塑性变形。但是，这些工具在计算上非常昂贵。建议开发基于光谱晶体可塑性的有限元工具，用于模拟变形处理操作和高级高强度钢（AHS）的机械性能，其计算时间与行业当前使用的工具相当。 AHSS代表了一类钢钢，具有对传统钢的属性的显着改善。拟议的与两个主要行业的合作将确保开发的工具将迅速采用到商业环境中。拟议的跨学科研究削减了材料科学，机械工程和应用数学的削减，并将为关键科学和技术领域的熟练人力资源的发展做出重大贡献。此外，该提案的资金将对德雷克塞尔大学（Drexel University）已经正在进行的计划产生积极影响，以确保将传统的代表性不足的少数民族和工程妇女纳入工程。