LCE: Simulation-Based Design environment by Meshfree Particle Methods

LCE：采用无网格粒子方法的基于仿真的设计环境

• 批准号: 9979661
• 负责人: Wing Liu
• 金额: $ 18万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9979661&HistoricalAwards=false
• 关键词: LCE; Simulation; Based; Design; environment

The goals of our proposed project are to develop meshfree-particle methods, which provide: 1. multiple length and time scales capabilities; 2. the abilities to treat shear failure bands, damage evolution, fracture, crack growth, fragmentation, and large deformation problems; 3. the capability to establish simulation-based acquisition, dramatically reducing the amount of live-fire testing, which is expensive and time consuming; and To this end, the following objectives will serve as milestones as well as assist in the accomplishment of the above stated results: 1. The development of an adaptive micro-macro material length scale bridging methodology based on wavelet multiresolution analysis of shear bands so that refinement can be introduced in areas of high gradients; and 2. Collaboration with DOE and DOD personnel for validation and refinement of the procedures by comparison with experimental results.

我们提出的项目的目标是开发无网格粒子方法，它提供：1。多个长度和时间尺度的能力; 2.处理剪切破坏带、损伤演化、断裂、裂纹扩展、破碎和大变形问题的能力; 3.建立基于模拟的采办能力，大大减少昂贵和耗时的实弹试验量;为此，以下目标将作为里程碑，并有助于实现上述结果：1. 基于剪切带的小波多分辨率分析的自适应微观-宏观材料长度尺度桥接方法的开发，使得可以在高梯度区域中引入细化;以及2. 与美国能源部和国防部人员合作，通过与实验结果的比较来验证和改进程序。