Stochastic geometrically nonlinear elasto-plastic buckling and behaviour of curved grid-like structures

弯曲网格结构的随机几何非线性弹塑性屈曲和行为

• 批准号: DP140101887
• 负责人: Prof Wei Gao
• 金额: $ 27.63万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140101887
• 关键词: Stochastic; geometrically; nonlinear; elasto; plastic

It is vital to assess the safety of large spatially curved-complex structures for design and rehabilitation purposes when the inevitable uncertainties in structural parameters and loads are addressed. This project aims to develop an advanced stochastic framework for three-dimensional nonlinear elasto-plastic behaviour and buckling analysis of curved grid-like structures. A rational and powerful stochastic nonlinear elasto-plastic finite element model will be proposed to account for the random high-order geometric nonlinearity and material elasto-plasticity. Novel formulations and effective algorithms will also be devised for stochastic nonlinear analytical analysis. An efficient tool will be developed for reliability assessment of the class of structures.

当结构参数和载荷不可避免地存在不确定性时，对大型空间弯曲复杂结构的安全性进行评估对于结构的设计和修复至关重要。本计画旨在发展一个先进的随机架构，以进行三维非线性弹塑性行为及曲型网格结构的屈曲分析。提出了一种合理的、功能强大的随机非线性弹塑性有限元模型，以考虑随机高阶几何非线性和材料弹塑性。新的配方和有效的算法也将被设计为随机非线性分析。为该类结构的可靠性评估提供了一种有效的工具。