The Shock and Vibration Digest最新文献

Technologies for Mitigation of Human-induced Vibrations Iin Civil Engineering Structures 土木工程结构中人为振动的缓解技术

The Shock and Vibration Digest Pub Date : 2007-11-01 DOI: 10.1177/0583102407084286

D. Nyawako, P. Reynolds

{"title":"Technologies for Mitigation of Human-induced Vibrations Iin Civil Engineering Structures","authors":"D. Nyawako, P. Reynolds","doi":"10.1177/0583102407084286","DOIUrl":"https://doi.org/10.1177/0583102407084286","url":null,"abstract":"-Previous civil engineering vibration mitigation research has focused primarily on the mitigation of earthquake and wind-induced vibrations in civil engineering structures. This paper provides a review of various technologies appropriate for mitigation of much lower level human-induced vibrations in civil engineering structures. It highlights technologies or combinations thereof that have been implemented in real-life civil engineering structures as well as some reduction levels in structural responses (velocity, acceleration) that have been achieved. A review of vibration mitigation techniques with this particular focus has not been presented before. A brief background to human-induced vibration serviceability primarily in floors, foot-bridges, grandstands and staircases is provided and various technologies available for mitigation of human-induced vibrations in civil engineering structures are introduced. A detailed review of these technologies is described as well as their real-life implementations in civil engineering structures prone to human-induced vibrations. Some improvements in vibration performances of some of the civil engineering structures are also presented. The technologies that show most promise for future application in vibration serviceability of civil engineering structures are outlined.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"30 16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128867597","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: 24

Multifunctional structure technologies for satellite applications 卫星应用多功能结构技术

The Shock and Vibration Digest Pub Date : 2007-09-01 DOI: 10.1177/0583102407077397

G. Aglietti, C. Schwingshackl, S. Roberts

{"title":"Multifunctional structure technologies for satellite applications","authors":"G. Aglietti, C. Schwingshackl, S. Roberts","doi":"10.1177/0583102407077397","DOIUrl":"https://doi.org/10.1177/0583102407077397","url":null,"abstract":"Conventional spacecraft subsystems are designed and manufactured separately, and are integrated only during the final stages of satellite development. This requires containers for the subsystems' hardware, mechanical interfaces, panels, frames, bulky wire harnesses, etc., which add considerable mass and volume. As all subsystems are generally secured to the structure, the multifunctional structure approach aims at merging these elements into the structure, so that the structure also carries out some of the typical functions of the subsystems (e.g. electrical energy storage). The main advantages are as follows: (i) removal of the bolted mechanical interfaces and most of the subsystems' containers; (ii) reduction of the satellite structure mass, as the strength of the parts of the subsystem imbedded into the structure are exploited, and substitute purely structural parts; (iii) reduction of the overall satellite volume, as elements such as battery packs or electronic harnesses can be built into the structure's volume. There are still issues that need to be addressed to allow a wider utilization of multifunctional structures. However, the development of concurrent engineering approaches, to carry out an integrated design of the spacecraft, together with advances in the subsystems' disciplines, will help to promote the further diffusion of multifunctional structures. © 2007 SAGE Pulications.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124969236","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: 34

Transient response of thin bodies subjected to impact : Wave approach 受冲击的薄体的瞬态响应:波动法

The Shock and Vibration Digest Pub Date : 2007-07-01 DOI: 10.1177/0583102407080410

Y. Rossikhin, M. Shitikova

{"title":"Transient response of thin bodies subjected to impact : Wave approach","authors":"Y. Rossikhin, M. Shitikova","doi":"10.1177/0583102407080410","DOIUrl":"https://doi.org/10.1177/0583102407080410","url":null,"abstract":"In this paper, we examine the problem of the response of rods, beams, plates and shells to low velocity impact. Thin bodies may possess elastic, viscoelastic, thermoelastic, isotropic, anisotropic features, as well as other features. In this paper, the emphasis is on wave theories of shock interaction. These theories are based on the fact that at the moment of impact transient waves (surfaces of strong discontinuity) are generated within the contact domain, which further propagate along the thin bodies and thereby influence the process of the shock interaction. The desired functions behind the strong discontinuity surfaces are found in terms of one-term, two-term or multiple-term ray expansions, the coefficients of which are determined with an accuracy of arbitrary functions from a set of equations describing the dynamic behavior of the thin body. On the contact domain boundary, the ray expansions for the desired functions go over into the truncated power series with respect to time and are matched further with the desired functions within the contact region that are represented by the truncated power series with respect to time with uncertain coefficients. As a result of such a procedure, it has been possible to determine all characteristics of shock interaction and, among these, to find the time dependence of the contact force and the displacements of the contact region. The proposed procedure is illustrated by numerous examples, which are combined into sections depending on the characteristics of the contact force and the dimensions of the thin bodies. The results are compared with those obtained by other approaches and procedures.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134549747","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: 42

Structural-acoustic optimization of composite sandwich structures : A review 复合材料夹层结构的结构声优化研究进展

The Shock and Vibration Digest Pub Date : 2007-05-01 DOI: 10.1177/0583102406074086

H. Denli, Jian-Qiao Sun

引用次数: 21

Review of guided-wave structural health monitoring 导波结构健康监测技术综述

The Shock and Vibration Digest Pub Date : 2007-03-01 DOI: 10.1177/0583102406075428

A. Raghavan, C. E. Cesnik

{"title":"Review of guided-wave structural health monitoring","authors":"A. Raghavan, C. E. Cesnik","doi":"10.1177/0583102406075428","DOIUrl":"https://doi.org/10.1177/0583102406075428","url":null,"abstract":"In this paper we present the state of the art in the field of guided-wave structural health monitoring (SHM). We begin with an overview of damage prognosis, and a description of the basic methodology of guided-wave SHM. We then review developments from the open literature in various aspects of this truly multidisciplinary field. First, we discuss different transducer technologies, including both piezoelectric and non-conventional popular and non-conventional piezoelectric transducers. Next, we examine guided-wave theory, tracing its early history down to modern developments. Following this, we detail the efforts into models for guided-wave excitation by SHM transducers. Then, we review several signal processing related works. The next topic in Section 6 is guided-wave SHM system development, and we explore various packaging ideas, integrated solutions and efforts to examine robustness to different service conditions. We also highlight the broad spectrum of applications in which this technology has been tested. We then present some investigations that have attempted to combine guided-wave approaches with other complementary SHM technologies for better system performance. Finally, we propose desirable developments for further advancement of this field.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"34 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123462585","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: 1035

Recent Results on the Stability and Response Bounds of Linear Systems: A Review 线性系统稳定性和响应界的最新研究进展

The Shock and Vibration Digest Pub Date : 2006-11-01 DOI: 10.1177/0583102406071970

C. Pommer, W. Kliem

引用次数: 5

Impacts of epistemic (bias) uncertainty on structural identification of constructed (civil) systems 认知(偏见)不确定性对构建(民用)系统结构识别的影响

The Shock and Vibration Digest Pub Date : 2006-09-01 DOI: 10.1177/0583102406068068

F. Moon, A. Aktan

{"title":"Impacts of epistemic (bias) uncertainty on structural identification of constructed (civil) systems","authors":"F. Moon, A. Aktan","doi":"10.1177/0583102406068068","DOIUrl":"https://doi.org/10.1177/0583102406068068","url":null,"abstract":"The primary goal of this paper is to discuss the state-of-the-art related to the structural identification (St-ID) of constructed systems, and to point out the most pressing needs for research and applications. As a subset of the system identification concept, St-ID aims to develop representative mathematical models of manufactured (mechanical) and constructed (civil) structural systems through the correlation of experimentally measured inputs and outputs. While the concept of St-ID has matured over the past three decades and it is widely and reliably applied to manufactured systems, St-ID for constructed systems remains in its infancy and has enjoyed only sparse implementation in practice, and generally only for signature structures. The authors believe that this delayed progress is principally the result of a lack of appreciation for the inherent distinctions between constructed systems and their manufactured counterparts. Through this paper the authors hope to clearly convey the unique challenges associated with the St-ID of constructed systems and motivate researchers from engineering mechanics to join in the investigation of these issues and to ultimately aid in advancing the art of St-ID of constructed systems.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122130624","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: 57

A review of vibration-based structural health monitoring with special emphasis on composite materials 基于振动的结构健康监测综述，重点是复合材料

The Shock and Vibration Digest Pub Date : 2006-07-01 DOI: 10.1177/0583102406065898

D. Montalvão, N. Maia, A. Ribeiro

{"title":"A review of vibration-based structural health monitoring with special emphasis on composite materials","authors":"D. Montalvão, N. Maia, A. Ribeiro","doi":"10.1177/0583102406065898","DOIUrl":"https://doi.org/10.1177/0583102406065898","url":null,"abstract":"Structural health monitoring and damage detection techniques are tools of great importance in the off-shore, civil, mechanical and aeronautical engineering communities, both for safety reasons and because of the economic benefits that can result. The need to be able to detect damage in complex structures has led to the development of a vast range of techniques, of which many are based upon structural vibration analysis. In the present article, some of the latest advances in Structural Health Monitoring and Damage Detection are reviewed, with an emphasis on composite structures on the grounds that this class of materials currently has a wide range of engineering applications. FOREWORD-It should be noted that this review is not intended to be a general, all-encompassing review covering the whole range of structural health monitoring (SHM); it was planned as the starting point for a study focusing on damage detection, localization and assessment for certain kinds of structure. Thus, the line of thought behind the search and the structure of this review is a result of objectives beyond the scope of the paper itself. Nevertheless, it was considered that, once the above was understood, an updated synopsis such as this could also be useful for other researchers in the same field. ©2006 SAGE Publications.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121071021","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: 490

A review of the state of the art in magnetorheological fluid technologies - Part I: MR fluid and MR fluid models 磁流变流体技术的现状综述-第一部分:磁流变流体和磁流变流体模型

The Shock and Vibration Digest Pub Date : 2006-05-01 DOI: 10.1177/0583102406065099

F. D. Goncalves, J. Koo, M. Ahmadian

{"title":"A review of the state of the art in magnetorheological fluid technologies - Part I: MR fluid and MR fluid models","authors":"F. D. Goncalves, J. Koo, M. Ahmadian","doi":"10.1177/0583102406065099","DOIUrl":"https://doi.org/10.1177/0583102406065099","url":null,"abstract":"This paper presents a review of the state of the art in magnetorheological technology. As magnetorheological fluids continue to gain attention, the research and development of these fluids must keep pace. Since their invention in 1948, MR fluid development has made significant advancements. Throughout this time, MR fluids have been faced with many challenges and today, after many years of development, MR fluid formulations appear to have overcome many of these challenges. The fluids have proven to be commercially viable and well suited for many applications. The intent of this study is to provide a review of the state of the art in MR fluid technologies. To limit the scope, this study will focus on three common concerns associated with MR fluids; namely the strength of the fluid (i.e., the achievable yield stress), the stability of the fluid, and the durability of the fluid. When considering the use of a MR fluid in a particular application, it is these three areas that fall under the greatest scrutiny. The literature is rich in works devoted to addressing these concerns. Furthermore, with the great success of MR fluids and MR fluid devices, a number of the models used to describe the behavior of the fluid are also reviewed; specifically, works related to the visco-plastic modeling of MR fluids are reviewed. Models used to describe the physics behind the formation of the field induced yield stress are also reviewed.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123632885","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: 138

A summary review of wireless sensors and sensor networks for structural health monitoring 用于结构健康监测的无线传感器和传感器网络综述

The Shock and Vibration Digest Pub Date : 2006-03-01 DOI: 10.1177/0583102406061499

J. Lynch, K. Loh

{"title":"A summary review of wireless sensors and sensor networks for structural health monitoring","authors":"J. Lynch, K. Loh","doi":"10.1177/0583102406061499","DOIUrl":"https://doi.org/10.1177/0583102406061499","url":null,"abstract":"In recent years, there has been an increasing interest in the adoption of emerging sensing technologies for instrumentation within a variety of structural systems. Wireless sensors and sensor networks are emerging as sensing paradigms that the structural engineering field has begun to consider as substitutes for traditional tethered monitoring systems. A benefit of wireless structural monitoring systems is that they are inexpensive to install because extensive wiring is no longer required between sensors and the data acquisition system. Researchers are discovering that wireless sensors are an exciting technology that should not be viewed as simply a substitute for traditional tethered monitoring systems. Rather, wireless sensors can play greater roles in the processing of structural response data; this feature can be utilized to screen data for signs of structural damage. Also, wireless sensors have limitations that require novel system architectures and modes of operation. This paper is intended to serve as a summary review of the collective experience the structural engineering community has gained from the use of wireless sensors and sensor networks for monitoring structural performance and health.","PeriodicalId":405331,"journal":{"name":"The Shock and Vibration Digest","volume":"280 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034195","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: 1632