Wind effect on building with Y-shaped plan

Rajabi, Ebrahim; Sadeghi, Hossein; Hashemi, M. Reza

doi:10.1007/s42107-022-00417-z

Cited by 6 publications

(6 citation statements)

References 20 publications

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“…Yahyai et al 19 studied the wind effect on Milad tower using numerical modeling. Rajabi et al 20 Presented wind pressure coefficients on a building with a Y-shaped plan using wind tunnel testing and numerical modeling.…”

Section: Introductionmentioning

confidence: 99%

Wind effect on scallop domes with negative amplitude and prominence using Experimental and Numerical Study

Nejati

Sadeghi

Heristchian

2023

International Journal of Space Structures

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This study investigates the wind effect on hexa-sectored scallop domes using Computational Fluid Dynamics (CFD) and wind tunnel tests. Similar to the shape of a seashell, the scallop dome is one of the most common domes used to cover large spans. The scallop dome has an additional curvature equal to its sectors compared to a base dome (spherical). Hence, it has better structural efficiency compared to a spherical dome under the same condition. The curvatures on the scallop dome create alternate “ridges” and “grooves” on it. According to the computations of the article, the grooves created on this dome in the sector, as well as their position angle to the wind direction significantly affect pressure coefficient value. Due to these differences, wind pressure on scallop domes significantly differs from wind pressure on spherical domes. The results indicate that the ridges cause negative wind pressure coefficients whose magnitude reaches a maximum of −2.0 for an angle of alignment of 30°. The analyses have been conducted through Ansys-Fluent. This study presents the equation of wind pressure coefficient in the most critical of dome groove positions. The arch created between the grooves of a scallop dome is another effective parameter on maximum negative pressure. In the case study scallop dome, if the wind effect angle is considered α = 15, the maximum deformation in the structure will be created, which is 20% higher than that of α = 0.

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Section: Introductionmentioning

confidence: 99%

Wind effect on scallop domes with negative amplitude and prominence using Experimental and Numerical Study

Nejati

Sadeghi

Heristchian

2023

International Journal of Space Structures

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“…Ma et al [12] calculated the ESWL of a large-span truss structure based on this method, showing that the method matches the transient analysis results from the perspective of the overall structural stress equivalence. The Chinese load code [13] based on the inertial wind load method [14] for wind-resistant design, by using stochastic vibration theory and vibration type decomposition method to determine the equivalent wind-induced vibration force and then calculate the β, Zhao et al [15] calculated the β of transmission tower based on this method combined with wind tunnel test data, showing that the equivalent displacement determined by it is close to the test value. However, the code is not applicable for some specific towering structures, for example, for transmission towers with cross arms and cross partitions, it is not suitable for direct code calculation due to the uneven variation of their shape and mass distribution, and the accuracy of β calculation for such transmission towers can be improved by considering the influence of local shape, mass and windshielding area as well as the correction factor of spatial correlation of fluctuating wind [16].…”

Section: Introductionmentioning

confidence: 99%

Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data

et al. 2022

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The complex aerodynamic shape and structural form affect the wind-induced vibration coefficient β of landscape towers with a twisted column and spiral beam (short for LTs). To clarify the β distribution characteristics, evaluate the applicability of existing load codes, and provide accurate design wind loads, wind tunnel tests and numerical simulations were carried out on a LT. The LT’s aerodynamic coefficients and wind-induced responses were measured using rigid sectional and aeroelastic models. Furthermore, the displacement wind-induced vibration coefficient βd and inertial load wind-induced vibration coefficient βi(z) of the LT were calculated from these measured data. Combined with test data and a finite element model, the impacts of the wind speed spectrum type, the structural damping ratio ξ, and the peak factor g on β of the LT are analyzed. The accuracy of β of the LT calculated by Chinese and American load codes was examined and given the correction method. The results showed that the wind yaw angle had a significant impact on βd of the LT, which cannot be neglected in current load codes. The abrupt mass increase at the platform location makes the distribution characteristics of βi(z) of the LT different from conventional high-rise structures. The values of ξ and g have a significant impact on the calculation results of β, which are the key to the accurate design wind loads of LTs. The existing load codes are not suitable for LTs, and the correction method proposed in this paper can be used to improve them.

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“…This complexity extends to understanding how these parameters influence the as-built part microstructure, thermal behavior, and mechanical performance.Vibration analysis (VA) stands out as a potent and practical technique in the realm of dynamic behavior characterization for both materials and structures. [27,28] This methodology…”

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confidence: 99%

“…Vibration analysis (VA) stands out as a potent and practical technique in the realm of dynamic behavior characterization for both materials and structures. [27,28] This methodology…”

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confidence: 99%

A Review on Vibration Characteristics of Additively Manufactured Metal Alloys

Azher,

Shah,

Bakhtari

et al. 2024

Adv Eng Mater

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The advent of additive manufacturing (AM) has dramatically shifted the manufacturing sector conceptualization, design, and creation of products. AM is poised to revolutionize goods production by establishing a new manufacturing paradigm, from reducing lead times to enabling rapid prototyping. AM can facilitate the production of complicated geometries and create functioning components with distinctive features for aerospace and automotive applications. However, defects such as pores, voids, interfaces, and inclusions can impair the quality and functionality of AM components. Vibration Analysis (VA) has become a popular tool for the dynamic qualification and testing of products and non‐destructive testing, but the literature lacks a comprehensive review of VA applied to AM. Hence, this paper summarizes recent advances in the application of VA for identifying and characterizing flaws in metal alloys, including titanium, aluminum, and nickel‐based alloys produced by AM. The review also includes studies on defects, such as porosity, cracks, and inclusions, and their effect on VA. The article concludes with a discussion of the limitations of VA for defect characterization and future research directions. Overall, VA is a promising non‐destructive testing method for quality assurance in AM and offers insights on overcoming the difficulties for further development and application of this technology.This article is protected by copyright. All rights reserved.

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Wind effect on building with Y-shaped plan

Cited by 6 publications

References 20 publications

Wind effect on scallop domes with negative amplitude and prominence using Experimental and Numerical Study

Wind effect on scallop domes with negative amplitude and prominence using Experimental and Numerical Study

Wind-Induced Vibration Coefficient of Landscape Tower with Curved and Twisted Columns and Spiral Beams Based on Wind Tunnel Test Data

A Review on Vibration Characteristics of Additively Manufactured Metal Alloys

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