.png){kind=icon}
返回
Multi-objective shape optimization for axially functionally graded microbeams
.png){kind=icon}
PRE
AI
DOI：10.1016/j.compstruct.2020.113370.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Nonuniform microbeams made of functionally graded materials (FGMs) have been studied extensively in literature to predict their mechanical and thermal behavior, those demonstrated that each of material variation, non-uniformity and micro-scale effects have significant influences on the static stability sand dynamic behavior. Therefore, this research exploited the multi-objective shape optimization method to optimize the beam shape and its volume fraction distribution in order to maximize the critical buckling loads and fundamental frequencies while minimizing the mass and cost of the FG microbeam, for the first time. Modified continuum model based on both Euler-Bernoulli beam theory as kinematic assumptions and constitutive equation of modified couple stress theory, is developed to derive equilibrium equations (in static analysis) and equations of motion (in dynamic analysis) of axially FGMs nonuniform microbeam. To control the variation of height and width along the beam length, three different shape functions are proposed in the analysis. The multiobjective particle swarm optimization (MOPSO) is adopted to get the Pareto optimal solutions. In addition to the FGM power index, the shape functions types and parameters are considered as the design variables. Several optimization problems are studied to demonstrate the multi-objective optimal shape design of axially functionally graded microbeams.
Keyword:
Nonuniform FGM microbeam
Modified couple stress
Multi-objective optimization
Shape optimization
Pareto optimality
Buckling and vibration analysis
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
IF:
7.1
论文数:
1.8W
被引数:
8.0W
机构
引用论文
Free Vibration Analysis of Rotating Axially Functionally Graded Tapered Timoshenko Beams旋转轴向功能梯度锥形蒂莫申科梁的自由振动分析
PREAI
分享收藏Bi-directional functionally graded materials (BDFGMs) for free and forced vibration of Timoshenko beams with various boundary conditions.png)
COMPOSITE STRUCTURES
COMPOSITE STRUCTURESIF7.1
PREAI
分享收藏Size dependent nonlinear free vibration of an axially functionally graded (AFG) microbeam using He's variational methodCOMPOSITE STRUCTURES
COMPOSITE STRUCTURESIF7.1
PREAI
分享收藏Multiobjective optimization of ceramic-metal functionally graded plates using a higher order modelCOMPOSITE STRUCTURES
COMPOSITE STRUCTURESIF7.1
PREAI
分享收藏
查看更多内容