scholarly journals Up-to-date methodology for optimization of structural force diagrams

2020 ◽  
Vol 1 (S-I) ◽  
pp. 73-81
Author(s):  
V. Korshunov ◽  
◽  
D. Ponomaryev ◽  
A. Rodionov ◽  
◽  
...  
Keyword(s):  
Structural Force

Research and Application of Time-Variation Analysis and Key Control Technology in Complex Steel Structures Construction

2011 ◽  
Vol 368-373 ◽  
pp. 2319-2326
Author(s):  
Yan Lin Guo ◽  
Guang Yu Tian ◽  
Xiao An Wang ◽  
Guo Dong Chen ◽  
Feng Fan
Keyword(s):  
Time Variation ◽  
Steel Structures ◽  
Internal Force ◽  
Integrated Model ◽  
Construction Process ◽  
Variation Analysis ◽  
Structural Force ◽  
Temporary Support ◽  
Control Technologies ◽  
Traditional Construction

This paper presents Integrated Cooperative Time-variation System (ICTS) and its application for constructional process of complex steel structures. ICTS is based on integrated model comprised of structures, boundary conditions, loads, material properties, construction facilities, where all those are supposed to be time-variation associated with a complex construction process. ICTS can deal with mainly time-variation analysis of construction processes, including pre-set deforming, integrated lifting, temporary support removal, rotation pulling, sliding and tensioning. Besides, several key control technologies of structural force and configuration during structure construction process are introduced, such as obtaining error criteria of cable’s length in tensile structures, controlling influence of constructional environmental temperature, estimating differences between internal and external tubes’ vertical deformation of skyscrapers due to shrinkage and creep of concrete of internal tube, evaluating residual internal force of complex welding structures. ICTS and these key control technologies reinforce traditional construction analysis by keeping continuity of constructional process and simulating interaction of different parts in integrated model precisely, and reach to a design-required structural state accurately after finishing constructional process.

Structural Source Identification from Acoustic Measurements Using an Energetic Approach

2017 ◽  
Vol 34 (4) ◽  
pp. 431-441 ◽  
Author(s):  
A. Samet ◽  
M. A. Ben Souf ◽  
O. Bareille ◽  
M. N. Ichchou ◽  
T. Fakhfakh ◽  
...  
Keyword(s):  
Energy Method ◽  
Numerical Test ◽  
Acoustic Energy ◽  
Vibration Source ◽  
Radiated Noise ◽  
Acoustic Cavity ◽  
Energetic Approach ◽  
Structural Force ◽  
Noise Measurements ◽  
Acoustic Energy Density

AbstractAn inverse energy method for the identification of the structural force in high frequency ranges from radiated noise measurements is presented in this paper. The radiation of acoustic energy of the structure coupled to an acoustic cavity is treated using an energetic method called the simplified energy method. The main novelty of this paper consists in using the same energy method to solve inverse structural problem. It consists of localization and quantification of the vibration source through the knowledge of acoustic energy density. Numerical test cases with different measurement points are used for validation purpose. The numerical results show that the proposed method has an excellent performance in detecting the structural force with a few acoustical measurements.

Talking the Walk: Processional Storytelling

Another Haul ◽  
2019 ◽  
pp. 127-146
Author(s):  
Charlie Groth
Keyword(s):  
Sense Of Place ◽  
Spring Season ◽  
Fishing Season ◽  
Structural Force ◽  
The Individual

This chapter explores the detail of how stories are connected to landscape to create what Ryden calls “invisible landscape,” Casey calls “thickening,” and Johnstone calls “narrative texture.” The chapter traces how the narrative genres explored in the previous four genres appear in conversation on the island during very particular times in particular places, between particular people in the course of a regular night or morning of fishing. In discussing narrative’s role in sense of place, the chapter presents the idea that the river itself, an anti-structural force, influences storytelling. At the same time, when family, crew, customers, and other visitors break into smaller groups and rejoin at various stages, they collaboratively create narratives of the individual haul, the current year’s fishing season, and the emerging spring season. This activity is called “processional storytelling,” alluding to both the process of the fishing haul and ritual processions.

Research and Analysis on the Mechanical Characteristics of Brush Shape Cleaning Element in Spiral Installation

2010 ◽  
Vol 97-101 ◽  
pp. 3565-3570
Author(s):  
Yan Mei Meng ◽  
Zhen Dong ◽  
Fu Ning Lu ◽  
Shang Ping Li ◽  
Kai Xu
Keyword(s):  
Maximum Stress ◽  
Working Process ◽  
Cleaning Efficiency ◽  
Element Analysis ◽  
Structural Forces ◽  
Air Resistance ◽  
Structural Force ◽  
Cleaning Device ◽  
Sugarcane Harvester ◽  
Spiral Angle

The cleaning element is not only the key part of the sugarcane harvester, but it is also the bottleneck of the development within the whole stalk of the sugarcane harvester. In this paper, it will theoretically elaborate on the structural forces that act on the spiraled and brushed shape cleaning elements during the process of the sugarcane cleaning. The paper also elaborates on the combined rigidity of elements in different arrangement installations and the maximum stress that acts on its roots. In addition to this，the FEA (Finite Element Analysis) software-ANSYS is used to analyze the structural force, the maximum stress, and the air resistance that is generated during the working process. The results of the analysis have been validated by experimentations. The experimental results indicate that, with the proper spiral angle cleaning element installed, it can both enhance the cleaning efficiency and reduce the maximum stress and the air resistance. Accordingly, it can improve the cleaning quality, prolong the working life of the cleaning element, and reduce the idling power waste of the cleaning device.

scholarly journals Numerical calculation and experimental research on the ship dynamics of the fluid–structure interaction

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878234
Author(s):  
Qianwen Huang ◽  
Xinping Yan ◽  
Cong Zhang
Keyword(s):  
Numerical Calculation ◽  
Fluid Structure Interaction ◽  
Coupling Model ◽  
Peak Frequency ◽  
Dynamical Response ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Ship Dynamics ◽  
Deformation Velocity ◽  
Structural Force

Accurate predictive method for ship dynamic is a keynote precondition for structural design and an important consideration for strength evaluation. A wave-ship coupling model focusing on the estimating of ship dynamics is numerically established to solve the fluid–structure interaction. Numerical calculation based on the presented algorithm is carried out, and the dynamical response for both ship and fluid is thus investigated with MATLAB. The dynamical responses including the structural force, deformation, velocity, and energy with different ship mass and stiffness are obtained. Experiment is conducted in the towing tank to investigate the peak frequency and transient amplitude with different wave speeds. It is found that the ship dynamics is closely related to the quality and stiffness of the structure, as well as the wave velocity of the fluid. An appropriate estimating method for ship dynamics is thus proposed through series of discussion on numerical results and experimental data.

scholarly journals Estimation of Structural Force in Rutile Suspensions.

1993 ◽  
Vol 109 (8) ◽  
pp. 613-618
Author(s):  
Hiroki YOTSUMOTO ◽  
Roe-Hoan YOON ◽  
Takahide WAKAMATSU ◽  
Shin-ichi ITO ◽  
Hiroshi SAKAMOTO
Keyword(s):  
Structural Force

Social Exclusion and Resilience: Examining Social Network Stratification among People in Same-Sex and Different-Sex Relationships

Social Forces ◽  
2021 ◽  
Author(s):  
Mirjam M Fischer
Keyword(s):  
Social Networks ◽  
Sexual Orientation ◽  
Social Exclusion ◽  
Community Building ◽  
National Sample ◽  
Same Sex ◽  
Relationship Type ◽  
The Family ◽  
Structural Force ◽  
Alternative Community

Abstract Social networks of minoritized societal groups may be exposed to a unique structural force, namely that of social exclusion. Using a national sample of people in same-sex and different-sex relationships in the Netherlands (N = 1,329), this study examines sexual orientation as stratifying factor in social networks. Specifically, it is a comparison of their size and composition. Overall, the networks are similar but a few differences stand out. People in same-sex relationships have larger networks than people in different-sex relationships, which are made up of fewer ties with the family-of-origin and more friends. This lends support to the families-of-choice hypothesis and suggests that people employ resilience strategies, such as alternative community building, to counteract social exclusion from families-of-origin. The results further show that men in same-sex relationships have the fewest same-gender ties in their networks out of both men and women in any relationship type. Overall, the results show that sexual orientation is a dimension worthwhile studying as a stratifying factor of social networks both standing alone and at the intersection with gender.

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