.png){kind=icon}
返回
Response sensitivity for geometrically nonlinear displacement-based beam-column elements
.png){kind=icon}
PRE
AI
DOI：10.1016/j.compstruc.2019.05.003.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Accurate and efficient response gradients are required in structural reliability, optimization, and system identification applications where the structural system is expected to yield under significant deformations. The direct differentiation method (DDM) is applied to the response sensitivity of displacement based beam-column finite elements with geometric nonlinearity due to moderate rotations in the basic system. The derived sensitivity equations are implemented in the OpenSees software framework. Stand-alone sensitivity analyses using the DDM and finite difference method (FDM) validate the sensitivity equations for example structures with nonlinear static and dynamic response. Finite element reliability analysis of a steel frame shows that, relative to a geometrically linear formulation, using geometrically nonlinear displacement-based elements increases the probability of failure and affects the importance ranking of the random variables. In addition, for a performance function based on residual capacity at a target lateral displacement, the frame strength at the design point is higher than that obtained when using geometrically linear elements. The developed sensitivity equations increase the number of nonlinear finite element formulations available for gradient-based applications in structural engineering. (C) 2019 Elsevier Ltd. All rights reserved.
Keyword:
Frame finite elements
Geometric nonlinearity
Sensitivity analysis
Structural reliability analysis
Nonlinear finite element methods
Direct differentiation method
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
C
IF:
4.8
论文数:
6.2K
被引数:
1.7W
机构
引用论文
.png){kind=icon}
Effect of Constitutive Material Models on Seismic Response of Two-Story Reinforced Concrete Frame
OAAI
OAAI分享收藏分享收藏Mental health and well‐being within rural communities: The Australian Rural Mental Health Study
PREAI
分享收藏
查看更多内容