Investigation of mechanical and microstructural aspects of plastic shear localization at different types of dynamic loading

The front cover of solar photovoltaic modules is mostly made of 3.2mm, 2mm or thinner glass. When under wind or other dynamic loading stress, the performance of the PV modules might be affected. This article analyzed data of dynamic load test on several different types of PV modules, and got the conclusion that the dynamic load stress could harm the string ribbon or interior circuits of the PV modules, and would therefore lead to capacity reduction and less insulation.

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Quantitative Study of Shear Localization in Chip Formation while Machining Ti-6Al-4V

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.407-408.412 ◽

2009 ◽

Vol 407-408 ◽

pp. 412-415

Author(s):

Dong Liu ◽

Wu Yi Chen ◽

Hong Hai Xu ◽

Xue Ke Luo ◽

Hui Liang

Keyword(s):

Shear Band ◽

Shear Flow ◽

Quantitative Study ◽

Cutting Speed ◽

Optical Microscope ◽

Shear Localization ◽

Adiabatic Shear ◽

Plastic Shear ◽

Orthogonal Machining ◽

Cutting Speeds

The formation of shear localized chips in orthogonal machining of Ti-6Al-4V was investigated. The chips in different cutting velocities were collected and the structure of the adiabatic shear localization was examined by optical microscope and SEM after polishing and eroding. The serrated coefficient, serrated frequency and fibred coefficient were proposed in this paper to characterize the degree of serration and plastic shear flow of the chip quantitatively. Experimental results show that the width of the shear band decreased and the fibred coefficient of the shear band increased as cutting speed increased. The serrated and frequency, the serrated coefficient increased with the increase of cutting speed in the experimental range of cutting speeds.

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Effect of Bracing on Regular and Irregular RCC (G+10) Frame Structure with Different Types of Bracings under Dynamic Loading

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2020.32498 ◽

2020 ◽

Vol 8 (12) ◽

pp. 317-327

Author(s):

Mohammed Zahid Rizwan

Keyword(s):

Dynamic Loading ◽

Frame Structure ◽

Different Types

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Study of the Effect of Adapter Design on the Load Distribution in the Bearing Units of Freight Cars

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i4.3.19725 ◽

2018 ◽

Vol 7 (4.3) ◽

pp. 147

Author(s):

Martynov I.E ◽

Trufanova A .V ◽

Petukhov V.M ◽

Ischenco V.M ◽

Kladko N.S

Keyword(s):

Finite Elements ◽

Service Life ◽

Mathematical Simulation ◽

Dynamic Loading ◽

Quality Indicators ◽

Load Distribution ◽

Reliability Index ◽

High Reliability ◽

Main Task ◽

Different Types

The possibility of increasing the service life of 18-100 three-piece bogies by using taper bearing units with different types of adapters is considered in the article. The main task is the need to increase the longevity of the running parts of freight cars by reducing their dynamic loading. The solution of this problem is possible by improving the axle boxes. To determine possible design solutions, an analysis was made of modern domestic and foreign designs of bogies using bearing assemblies with adapters and three types of adapters with the highest quality indicators, namely the half-box of the 18-7020 bogie, adapter with elastic packing and adapter of the 18-4129 bogie. Three models of adapters were investigated using the finite-elements method, which, in accordance with reported manufacturer’s data, have high reliability index and can provide equal load distribution between bearing systems rollers. The results of mathematical simulation suggest that the forces applied to the bearing systems rollers largely depend on the adapter design. Furthermore, the studied adapter designs are not acceptable and require further designing.

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