Computer Assisted Mechanics and Engineering Sciences最新文献_第2页

Milestones in the 150-Year History of Topology Optimization: A Review 拓扑优化150年历史中的里程碑:回顾

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-30 DOI: 10.24423/CAMES.296

J. Lógó, H. Ismail

{"title":"Milestones in the 150-Year History of Topology Optimization: A Review","authors":"J. Lógó, H. Ismail","doi":"10.24423/CAMES.296","DOIUrl":"https://doi.org/10.24423/CAMES.296","url":null,"abstract":"Structural optimization is one of the most intensively investigated research areas in engineering. Recently, topology optimization has become the most popular engineering subfield. The starting date of structural optimization cannot be precisely determined. Michell’s optimization paper, published in 1904, is considered as the first publication in this subfield. However, his paper starts with a statement that his work is a generalization of Maxwell’s idea presented in the paper published in 1870. \u0000The authors of this review paper consider that this date can be accepted as the starting date of topology optimization. This paper is an overview of subjectively selected state-of-art achievements in topology optimization during its history of 150 years. The selection of the achievements is a rather difficult task because, in the early period of the history of topology optimization, a lot of meetings were classified and the results were not available for the public. The optimization community has almost no knowledge about the publications in topology optimization in the 1950s. Around that time, one can find some information on workshops and meetings connected to the Cambridge University or Oxford University with researchers such as Foulkes, Cox, Hemp, and Shield, who published significant results and these communications are generally not known for the reason mentioned above. After the 1970s, this situation has changed and there were more possibilities to find publications due to the changes and thanks to digitalization. As indicated earlier here subjectively selected works are overviewed from the 150-year history focusing on the first hundred twenty years.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116968818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

The Overview of Optimization Methods Applied to Truss-Z Modular System 桁架- z模块系统优化方法综述

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-28 DOI: 10.24423/CAMES.291

M. Zawidzki

引用次数: 0

Parametric Study on the Connection Between Poisson’s Ratio, GSI and Environmental Stress 泊松比、GSI与环境应力关系的参数化研究

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-25 DOI: 10.24423/CAMES.287

B. A. Lógó, B. Vásárhelyi

引用次数: 3

Different Dynamic Formulations for a Mechanism using Bond Graph 用键合图表示机构的不同动力学公式

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-18 DOI: 10.24423/CAMES.298

A. Maini, A. Vaz

引用次数: 0

Applications of Michell’s Theory in Design of High-Rise Buildings, Large-Scale Roofs and Long-Span Bridges 米歇尔理论在高层建筑、大型屋顶和大跨度桥梁设计中的应用

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-17 DOI: 10.24423/CAMES.288

C. Graczykowski, T. Lewiński

引用次数: 2

Speckle Noise Reduction and Image Segmentation Based on a Modified Mean Filter 基于改进均值滤波的斑点降噪与图像分割

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-09-15 DOI: 10.24423/CAMES.290

P. Arulpandy, M. Pricilla

{"title":"Speckle Noise Reduction and Image Segmentation Based on a Modified Mean Filter","authors":"P. Arulpandy, M. Pricilla","doi":"10.24423/CAMES.290","DOIUrl":"https://doi.org/10.24423/CAMES.290","url":null,"abstract":"Image segmentation is an essential process in many fields involving digital images. In general, segmentation is the process of dividing the image into objects and background image. Image segmentation is an important step in the object detection process. It becomes more critical if a given image is corrupted by noise. Most digital images are corrupted by noises such as salt and pepper noise, Gaussian noise, Poisson noise, speckle noise, etc. Speckle noise is a multiplicative noise that affects pixels in a gray-scale image, and mainly occurs in low level luminance images such as Synthetic Aperture Radar (SAR) images and Magnetic Resonance Image (MRI) images. Image enhancement is an essential task to reduce specklenoise prior to performing further image processing such as object detection, image segmentation, edge detection, etc. Here, we propose a neighborhood-based algorithm to reduce speckle noise in gray-scale images. The main aim of the noise reduction technique is to segment the noisy image. So that the proposed algorithm applies some luminance to the original image. The proposed technique performs well at maximum noise variance. Finally, the segmentation process is done by the modified mean filter. The proposed technique has three phases. In phase 1, the speckle noise is reduced and the contrast adjustment is made. In phase 2, the segmentation of the enhanced image is processed. Finally, in phase 3, the isolated pixels in the segmented image are eliminated and the final segmented image is generated. This technique does not require any threshold value to segment the image; it will be automatically calculated based on the mean value.","PeriodicalId":448014,"journal":{"name":"Computer Assisted Mechanics and Engineering Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114148576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Michell Structures within L-Shaped Domains l形域内的米歇尔结构

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-07-31 DOI: 10.24423/CAMES.281

K. Bołbotowski, T. Lewinski, T. Sokół

引用次数: 0

Inverse Kinematics of a Spatial Mechanism using Multibond Graph 基于多键图的空间机构运动学逆解

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-06-22 DOI: 10.24423/CAMES.280

A. Maini, A. Vaz

引用次数: 0

Simulations of Concrete Response to Impact Loading Using Two Regularized Models 用两种正则化模型模拟混凝土对冲击荷载的响应

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-06-19 DOI: 10.24423/CAMES.270

Adam Wosatko, A. Winnicki, J. Pamin

引用次数: 1

In Memoriam – Professor Witold Gutkowski 纪念——维托尔德·古特科夫斯基教授

Computer Assisted Mechanics and Engineering Sciences Pub Date : 2020-06-05 DOI: 10.24423/CAMES.293

B. Blachowski, P. Hołobut

引用次数: 0