Fatigue Topology Optimization Based on Different Solving Strategies

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：DSCUMT

【摘要】

：

【作者】

：

Pengfei Su Hongling Ye Weiwei Wang Yunkang Sui

【机构】

：

College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technolog

【出处】

：

中国计算力学大会2018暨国际华人计算力学大会2018

【发表日期】

：

2018年10期

【关键词】

：

topology optimization fatigue ICM criterion method stress globalization

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　Fatigue is a complex mode of failure,and structure is prone to fatigue failure under the long cycle working,which is very dangerous.Topology optimization aims at finding the best path of force transmission in the design domain under given constraints and realizes the design of lightweight.

其他文献

Bi-directional Evolutional Structural Optimization with Maximum Length Scale Control

After decades of development,the configuration of topology optimization has been applied to high-precision fields such as machinery,civil engineering and even aerospace.

会议

BESOP-normAggregationlength Scale Control

Integrated optimization of transformable components and structure topology considering cohesive inte

In most of the existing topology optimization studies of multi-material structures or structures with component layout,the interface of different materials was assumed to be perfectly bonded.

会议

Integrated topology optimizationInterface debondingCohesive modelXFEMLevel s

信息不完备下基于贝叶斯推断的可靠度优化方法

实际工程中存在着很多不确定性，如载荷环境、材料特性、结构尺寸及模型简化等引起的不确定性，而数据信息的不完备很大程度上制约了传统可靠度优化设计方法的应用。本文采用贝叶斯推断方法，针对信息不完备情况(即一部分随机变量或参数的概率分布已知，一部分随机变量或参数概率分布未知但已知有限个样本)，开展下结构可靠度优化方法的研究。

会议

可靠度优化信息不完备贝叶斯推断

A Reliability-Based Optimization Based on Bayesian Inference Under the Incomplete Information

There are many uncertainties in the practical engineering,such as uncertainties related with external loads,material characteristics,geometric properties and other factors.

会议

Reliability-based Design OptimizationIncomplete informationBayesian inferences

基于分位点移动的可靠性优化高效解耦方法

在常用的可靠性优化算法中，双循环法计算量大；单循环法不够稳健；解耦法虽然整体性能较好，但不能避免一次二阶矩带来的的近似误差。本文提出了一种新的基于分位点移动的可靠性优化解耦法。不同于序列优化与可靠性评定法在物理空间对RBDO 问题进行解耦，本方法在概率空间对RBDO 问题进行解耦，通过在概率空间求得约束的偏移距离，从而把可靠度优化问题转化为一系列确定性优化子问题。

会议

解耦法可靠性优化分位点Kriging 代理模型

基于降阶模型的网格加筋筒壳结构动力优化

网格加筋筒壳结构因其较高的比刚度、比强度被广泛应用于航空航天结构中。火箭、导弹等飞行器结构要求系统固有频率远离发动机的振动频率或仪器固有频率，为了确保结构在动力环境下的安全性，对网格加筋筒壳结构进行动力特性优化是非常必要的。

会议

网格加筋筒壳动力降阶模型动力优化渐进均匀化方法本征正交分解法

The attenuation of stress wave propagation in multilayer structure

In recent years,many biological structures with excellent impact resistance have been studied,such as the stomatopod dactyl club,fish scales,etc.These biological structures have a multi-layered struct

会议

multi-layered structurestress wavethe transmission coefficient

Multi-scale Clustering Optimization of thermo-elastic Lattice Structure based on Extended Multiscale

The concurrent clustering optimization of micro-structure and macro-structure of thermo-elastic lattice structures based on extended multiscale finite element method(EMsFEM)is studied.

会议

thermoelastic lattice structuremulti-scale clustering optimizationEMsFEMstrai

Robust topology optimization of multi-material structures with uncertain interface

Material interface-related uncertainties induced by inter-diffusion or reactions between two different materials may significantly deteriorate the actual performance of structures or metamaterials.

会议

Integrated topology optimizationInterface debondingCohesive modelXFEMLevel s

Integrated Topology Optimization Design for Structure and Porous Material

This article aims to minimize the structural compliance,optimizing the two-scale structure for material with elliptical holes collaboratively.We define unit cells by two independent design variables,t

会议

Topology optimizationPorous materialHomogenization methodTwo-scale

Fatigue Topology Optimization Based on Different Solving Strategies

其他学术论文