Research Initiation: Detailed Three-Dimensional Simulation of Steel Frame Subassemblages

研究启动：钢框架子组合的详细三维模拟

• 批准号: 8810385
• 负责人: Donald White
• 金额: $ 7万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-06-01 至 1990-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8810385&HistoricalAwards=false
• 关键词: Research; Initiation; Detailed; Three; Dimensional; Research; Initiation; Detailed; Three; Dimensional

Improvements in the static and aseismic design of steel-framed structures are hindered by the inability to simulate adequately their three-dimensional nonlinear response to monotonic, nonproportional, and cyclic loadings. This research involves the development of advanced finite element and computer graphics capabilities for the analysis of steel frame subassemblies, and the application of these research tools to achieve a better understanding of the full-range behavior of structural steel frames. The effects of initial imperfections and residual stresses, spread of plasticity, the detailed constitutive response of structural steel to nonproportional and cyclic straining, inelastic nonuniform torsion and torsional- flexural coupling, cross-section distortion, joint deformations, and the interaction of local and overall instabilities will each be modeled and studied. Computer graphics techniques will be developed for monitoring and control of nonlinear simulations and for animation and visualization of the complex three-dimensional phenomena modeled by the planning and interpretation of experimental tests, the extension of experimental knowledge to a wide range of geometries and loadings, and the development and calibration of approximate models for non-linear analysis of large frame structures.

由于无法充分模拟其对单调，非比例和环状载荷的三维非线性响应，因此阻碍了钢结构结构的静态和无性设计的改进。 这项研究涉及开发高级有限元和计算机图形功能，以分析钢架子组件，并应用这些研究工具以更好地了解结构钢框架的全范围行为。 初始缺陷和残余应力，可塑性的扩散，结构钢对非生育和环状应变的详细本构响应，不弹性的非弹性不均匀扭转以及扭转 - 弯曲耦合，横截面失真，关节变形，关节变形，关节变形，以及各个位置的相互作用和整体上的相互作用和整体上的相互作用。 计算机图形技术将开发用于监视和控制非线性模拟，以及通过计划和解释实验测试的计划和解释，将实验知识扩展到广泛的几何和负载，以及对大型框架结构的非线性分析的近似模型的开发和校准的复杂三维现象的动画和可视化。