نتایج جستجو برای: vibration of bridges

تعداد نتایج: 21170874  

2016
S. P. Schwenzer M. A. Bullock T. D. Swindle

PRESSURE AND TEMPERATURE CONDITIONS S. P. Schwenzer 1 , M. A. Bullock 2 , J. C. Bridges 3 , C. L. Chavez 4 , J. Filiberto 5 , L. J. Hicks 3 , S. P. Kelley 1 , M. A. Miller 6 , J. M. Moore 4 , H. D. Smith 4 , T. D. Swindle 7 , A. H. Treiman 8 – 1 The Open University, Walton Hall, Milton Keynes MK7 6AA, UK; 2 Southwest Research Institute, 1050 Walnut St., Suite 300, Boulder, CO 80302 (bullock@bou...

2018
Fernando Moreu Xiaomeng Li Shunlong Li Dongyu Zhang

1 Department of Civil Engineering, University of New Mexico, Albuquerque, NM, United States, 2 Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, United States, 3 Department of Bridge and Tunnel Engineering, School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China, 4 School of Civil Engineering, Harbin Institute o...

2007
K. LANGER

By using the H-D isotope eflect on the vibrational spectrum of orthorhombic zoisite, we conflrm the assignrnsnt of a band at 2160 cm-r to a low-energy OH-stretching vibration. These OH groups occur in strong hydrogen bridges with a bonding energy of approximately 4oU/mole, along with the "normal" OH groups in the O(10)-H ...O(4) bridge. Furthermore, four OH librational modes could be identi-fie...

Journal: :Journal of Applied Fluid Mechanics 2023

Centrally slotted box decks have been commonly used as components of bridges, especially for long-span bridges. A wind tunnel experiment was conducted to investigate the effect attachments on vortex-induced vibration (VIV) deck. In this research, characteristics VIV responses at different attack angles 5 models considering naked bridge decks, crash barriers, and vehicles bridges were studied di...

2008
A. Alvandi M. Jolin

The performance of vibration-based damage identification techniques for current condition evaluation of existing bridges is studied through their application to dynamic response of an existing concrete bridge. First, in situ dynamic tests were performed and modal parameters (mode shapes and frequencies) were identified. As previous sets of in situ dynamic parameters were not available, the refe...

Journal: :journal of agricultural science and technology 2010
r. karami-osboo m. khodaverdi f. ali-akbari

vibration generated by vehicles during road transport has an important effect on the agricultural products damage process, particularly vegetable and fruit. modulus of elasticity is one of the most important mechanical properties of fruits and its variation can be described as one of the damage criteria during transportation. this research was conducted to evaluate the effects of vibration para...

Journal: :Sustainability 2023

To obtain an effective data mining method for cable-stayed bridge damage diagnosis, the algorithm of diagnosis model based on was studied, and a is proposed. This oriented to bridges. After comparison, support vector machine (SVM) limit gradient-boosting (XGBoost) algorithms, with advantages in location quantification, are combined optimized First, refined benchmark finite element established b...

Bridges built from any material and having any special shape  will eventually show signs of wearing off; therefore, there are several factors in the kind and rate of such wearing off and its expansion such as atmosphere, flood, earthquake, overload, design quality, execution and kind of materials that will all reduce the functionality of the structures. Thus, maintaining processes and repairing...

2016
Xiao Liu

There is the work by Bridges et al (1999) on the key features of a constructive proof of the implicit function theorem, including some applications to physics and mechanics. For mixtures of logistic distributions such information is lacking, although a special instance of the implicit function theorem prevails therein. The theorem is needed to see that the ridgeline function, which carries info...

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