Modal Analysis Of Automotive Rear Lamp Lens Produced From Plastic Material

Abstract: The Aim of this paper is to study failures in radiator fan blades due to Resonance and optimization in design, which will withstand the failure conditions. The Modal Analysis is carried out in ANSYS and it is validated through Experimental Techniques. The correlation between modal analysis and experimental analysis is determined. Suitable material which withstands the resonance is determined and validated in ANSYS and FFT Analyzer. In absence of design data, the reverse engineering process is considered as a major tool for modeling. Using the data the solid model of the radiator blade is created in CAD. We have used modal analysis to calculate the natural frequencies and mode shapes of a Radiator fan. The natural frequencies and mode shapes are critical components in the design of any structure. Experimental Analysis is accomplished using FFT Analyzer with DEWESOFT software. The final results of CAE model and Experimental tested model are correlated. Keywords: Natural Frequency, Mode Shapes, FFT, FEA.

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Modal analysis of dielectric-sleeve-loaded circular waveguide for dual-mode radiator applications

IEE Proceedings H Microwaves Antennas and Propagation ◽

10.1049/ip-h-2.1987.0072 ◽

1987 ◽

Vol 134 (4) ◽

pp. 369 ◽

Cited By ~ 3

Author(s):

M.S. Leong ◽

P.S. Kooi ◽

S.P. Yeo

Keyword(s):

Modal Analysis ◽

Circular Waveguide ◽

Dual Mode ◽

Dielectric Sleeve

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Modal Analysis of Turbulent Flow near an Inclined Bank–Longitudinal Structure Junction

Journal of Hydraulic Engineering ◽

10.1061/(asce)hy.1943-7900.0001856 ◽

2021 ◽

Vol 147 (3) ◽

pp. 04020100

Author(s):

Nasser Heydari ◽

Panayiotis Diplas ◽

J. Nathan Kutz ◽

Soheil Sadeghi Eshkevari

Keyword(s):

Turbulent Flow ◽

Modal Analysis ◽

Longitudinal Structure

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Masonry: the brittle or plastic material?

Promyshlennoe i Grazhdanskoe Stroitel stvo ◽

10.33622/0869-7019.2019.03.22-28 ◽

2019 ◽

pp. 22-28

Keyword(s):

Plastic Material ◽

Experimental Studies ◽

Point Of View ◽

Plastic Properties ◽

Plastic Deformations ◽

Base Materials ◽

Stress States ◽

Creep Deformations ◽

Structural Point

The results of experimental studies of masonry on the action of dynamic and static (short-term and long-term) loads are presented. The possibility of plastic deformations in the masonry is analyzed for different types of force effects. The falsity of the proposed approach to the estimation of the coefficient of plasticity of masonry, taking into account the ratio of elastic and total deformations of the masonry is noted. The study of the works of Soviet scientists revealed that the masonry under the action of seismic loads refers to brittle materials in the complete absence of plastic properties in it in the process of instantaneous application of forces. For the cases of uniaxial and plane stress states of the masonry, data on the coefficient of plasticity obtained from the experiment are presented. On the basis of experimental studies the influence of the strength of the so-called base materials (brick, mortar) on the bearing capacity of the masonry, regardless of the nature of the application of forces and the type of its stress state, is noted. The analysis of works of prof. S. V. Polyakov makes it possible to draw a conclusion that at the long application of the load, characteristic for the masonry are not plastic deformations, but creep deformations. It is shown that the proposals of some authors on the need to reduce the level of adhesion of the mortar to the brick for the masonry erected in earthquake-prone regions in order to improve its plastic properties are erroneous both from the structural point of view and from the point of view of ensuring the seismic resistance of structures. It is noted that the proposal to assess the plasticity of the masonry of ceramic brick walls and large-format ceramic stone with a voidness of more than 20% is incorrect, and does not meet the work of the masonry of hollow material. On the basis of the analysis of a large number of research works it is concluded about the fragile work of masonry.

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Effect of Bass Bar Tension on Modal Parameters of a Violin's Top Plate

Archives of Acoustics ◽

10.2478/aoa-2014-0015 ◽

2015 ◽

Vol 39 (1) ◽

pp. 145-149 ◽

Cited By ~ 3

Author(s):

Ewa B. Skrodzka ◽

Bogumił B.J. Linde ◽

Antoni Krupa

Keyword(s):

Modal Analysis ◽

Experimental Modal Analysis ◽

Mode Shapes ◽

Modal Parameters ◽

Normal Value ◽

Modal Damping

Abstract Experimental modal analysis of a violin with three different tensions of a bass bar has been performed. The bass bar tension is the only intentionally introduced modification of the instrument. The aim of the study was to find differences and similarities between top plate modal parameters determined by a bass bar perfectly fitting the shape of the top plate, the bass bar with a tension usually applied by luthiers (normal), and the tension higher than the normal value. In the modal analysis four signature modes are taken into account. Bass bar tension does not change the sequence of mode shapes. Changes in modal damping are insignificant. An increase in bass bar tension causes an increase in modal frequencies A0 and B(1+) and does not change the frequencies of modes CBR and B(1-).

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