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《结构与土木工程前沿(英文)》 页码 901-914 doi: 10.1007/s11709-023-0915-8
关键词: shield tunnel segment joint joint structural model failure mechanism
Amin GHANNADIASL; Saeedeh GHAEMIFARD
《结构与土木工程前沿(英文)》 2022年 第16卷 第9期 页码 1127-1140 doi: 10.1007/s11709-022-0838-9
关键词: crack cantilever beam triple hybrid algorithms Particle Swarm Optimization
Pengxing YI,Lijian DONG,Tielin SHI
《机械工程前沿(英文)》 2014年 第9卷 第4期 页码 354-367 doi: 10.1007/s11465-014-0319-5
To improve the dynamic performance and reduce the weight of the planet carrier in wind turbine gearbox, a multi-objective optimization method, which is driven by the maximum deformation, the maximum stress and the minimum mass of the studied part, is proposed by combining the response surface method and genetic algorithms in this paper. Firstly, the design points’ distribution for the design variables of the planet carrier is established with the central composite design (CCD) method. Then, based on the computing results of finite element analysis (FEA), the response surface analysis is conducted to find out the proper sets of design variable values. And a multi-objective genetic algorithm (MOGA) is applied to determine the direction of optimization. As well, this method is applied to design and optimize the planet carrier in a 1.5 MW wind turbine gearbox, the results of which are validated by an experimental modal test. Compared with the original design, the mass and the stress of the optimized planet carrier are respectively reduced by 9.3% and 40%. Consequently, the cost of planet carrier is greatly reduced and its stability is also improved.
关键词: planet carrier multi-objective optimization genetic algorithms wind turbine gearbox modal experiment
Development of surface reconstruction algorithms for optical interferometric measurement
Dongxu WU, Fengzhou FANG
《机械工程前沿(英文)》 2021年 第16卷 第1期 页码 1-31 doi: 10.1007/s11465-020-0602-6
关键词: surface topography measurement optical interferometry coherence envelope phase-shifting algorithm
毕建欣,张岐山
《中国工程科学》 2005年 第7卷 第4期 页码 88-94
介绍了关联规则挖掘算法的基本原理,并按照挖掘中涉及到的变量数目(维数)、数据的抽象层次和处理变量的类别(布尔型和数值型),依次对关联规则挖掘算法的研究进行综述,并对一些典型的算法进行分析和比较,最后展望了关联规则挖掘算法的研究方向。
谢涛,陈火旺
《中国工程科学》 2002年 第4卷 第2期 页码 59-68
近年来,多目标优化与决策问题求解已成为演化计算的一个重要研究方向。为使演化算法的种群解 能尽快收敛并均匀分布于多目标问题的非劣最优域,多目标演化算法的研究热点集中在基于Pareto最优概念的 种群个体的比较与排序、适应值賦值与小生境技术等方面。介绍了多目标优化与决策技术的发展历史与分类方 法,分析了基于Pareto最优概念与不基于Pareto最优概念两大类的多目标演化算法,并详细比较与分析了几种 典型多目标演化算法。其次,论述了与多目标演化算法研究紧密相关的一些问题,如多目标问题解的性质,测 试函数集设计,算法性能评估技术,算法收敛性,并行实现以及实际多目标优化问题的处理等。
Application of machine learning algorithms for the evaluation of seismic soil liquefaction potential
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 490-505 doi: 10.1007/s11709-020-0669-5
关键词: seismic soil liquefaction Bayesian belief network cone penetration test parameter learning structural learning
Hamed FATHNEJAT, Behrouz AHMADI-NEDUSHAN
《结构与土木工程前沿(英文)》 2020年 第14卷 第4期 页码 907-929 doi: 10.1007/s11709-020-0628-1
关键词: two-stage method modal strain energy surrogate model GMDH optimization damage detection
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 378-395 doi: 10.1007/s11709-022-0899-9
关键词: optimization surrogate models artificial neural network SAP2000 genetic algorithm
汪金辉,陆守香
《中国工程科学》 2006年 第8卷 第3期 页码 58-61
将遗传算法(GAs)引入火灾环境下建筑内人员安全疏散的可靠度分析领域,并初步探讨了这一算法的具体实现过程,遗传算法可以方便地对式子复杂和难以求导的功能函数进行优化计算。算例分析的结果表明,遗传算法不仅可以实现人员安全疏散可靠度计算,而且获得了很高的计算精度,为人员安全疏散可靠度研究提供了新的有效方法和途径。
Dede ZHAI, Shanyong CHEN, Ziqiang YIN, Shengyi LI
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 143-157 doi: 10.1007/s11465-017-0432-3
With the development of new materials and ultra-precision processing technology, the sizes of measured objects increase, and the requirements for machining accuracy and surface quality become more exacting. The traditional measurement method based on reference datum is inadequate for measuring a high-precision object when the quality of the reference datum is approximately within the same order as that of the object. Self-referenced measurement techniques provide an effective means when the direct reference-based method cannot satisfy the required measurement or calibration accuracy. This paper discusses the reconstruction algorithms for self-referenced measurement and connects lateral shearing interferometry and multi-probe error separation. In lateral shearing interferometry, the reconstruction algorithms are generally categorized into modal or zonal methods. The multi-probe error separation techniques for straightness measurement are broadly divided into two-point and three-point methods. The common features of the lateral shearing interferometry method and the multi-probe error separation method are identified. We conclude that the reconstruction principle in lateral shearing interferometry is similar to the two-point method in error separation on the condition that no yaw error exists. This similarity may provide a basis or inspiration for the development of both classes of methods.
关键词: self-referenced measurement lateral shearing interferometry multi-probe error separation surface metrology
Regulatory issues for genetically modified animals
Perry Bradbury HACKETT
《农业科学与工程前沿(英文)》 2020年 第7卷 第2期 页码 188-203 doi: 10.15302/J-FASE-2019307
Precision genetics and breeding have the potential to meet the agricultural needs and goals of the world in the 21st century. These needs include increasing the efficiency of production of animals and improving their products with minimal impact on the environment. The USA is the major innovator in genomic science and the acknowledged leader in formulating policies to regulate genetic applications in medicine and agriculture. However, governments worldwide have been exceedingly reluctant to support the introduction of genetically modified (GM) animals into agriculture. Regulatory policies have stagnated due to legal guidelines that could not anticipate the needs and solutions that are evident today. This must change if we are to maintain planetary integrity. I propose a new, market-based regulatory model for GM livestock that has both a strong scientific foundation and has worked for 10000 years. The model is similar to that for information technology in which specific algorithms drive computer and cell phone applications. Genome engineers write genetic algorithms that drive the traits in biological organisms. Accordingly, GM products should be viewed in terms of their use and public benefit rather than by limitations to the genetic programing coming from a few highly vocal groups. Genetic algorithms (Genapps) of the 21st century will include not only introduction of synthetic genes, but also complete natural and synthetic biochemical pathways to produce agricultural products that are maximally efficient, healthy to humans and animals, and sustainable in an era of changing climates while avoiding environmental degradation.
一种用于抑制相移误差和零级串扰的相移算法通用设计方法 None
Chao FANG, Yang XIANG, Ke-qi QI
《信息与电子工程前沿(英文)》 2018年 第19卷 第6期 页码 809-814 doi: 10.1631/FITEE.1601692
关键词: 测量;横向剪切干涉仪;相移算法;相位复原
王宏建,李靖,刘和光,姜景山
《中国工程科学》 2004年 第6卷 第11期 页码 38-42
文章通过电磁场时域有限差分(FDTD)算法与遗传算法(GA)相结合进行平面螺旋电感设计。通过优化单元网格大小,可优化设计整个平面螺旋电感(包含空气桥)的结构尺寸。介绍了该方法既能够进行严格的电磁场求解,又可以避免繁杂的实验过程,是优化设计的一种有效而准确的手段。
Estimation of optimum design of structural systems via machine learning
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1441-1452 doi: 10.1007/s11709-021-0774-0
关键词: optimization metaheuristic algorithms harmony search structural designs machine learning artificial neural networks
标题 作者 时间 类型 操作
Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield
期刊论文
Crack detection of the cantilever beam using new triple hybrid algorithms based on Particle Swarm Optimization
Amin GHANNADIASL; Saeedeh GHAEMIFARD
期刊论文
Multi-objective genetic algorithms based structural optimization and experimental investigation of the
Pengxing YI,Lijian DONG,Tielin SHI
期刊论文
Development of surface reconstruction algorithms for optical interferometric measurement
Dongxu WU, Fengzhou FANG
期刊论文
Application of machine learning algorithms for the evaluation of seismic soil liquefaction potential
Mahmood AHMAD, Xiao-Wei TANG, Jiang-Nan QIU, Feezan AHMAD, Wen-Jing GU
期刊论文
An efficient two-stage approach for structural damage detection using meta-heuristic algorithms and group
Hamed FATHNEJAT, Behrouz AHMADI-NEDUSHAN
期刊论文
Optimal design of double-layer barrel vaults using genetic and pattern search algorithms and optimized
期刊论文
Review of self-referenced measurement algorithms: Bridging lateral shearing interferometry and multi-probe
Dede ZHAI, Shanyong CHEN, Ziqiang YIN, Shengyi LI
期刊论文