Effect of Chestbands on the Global and Local Response of the Human Thorax to Frontal Impact

2017 ◽  
Vol 45 (11) ◽  
pp. 2663-2672 ◽  
Author(s):  
Benjamin K. Shurtz ◽  
Amanda M. Agnew ◽  
Yun-Seok Kang ◽  
John H. Bolte
Keyword(s):  
Frontal Impact ◽  
Local Response ◽  
Human Thorax ◽  
Global And Local

Design and seismic behaviour of taller eccentrically braced frames

2010 ◽  
Vol 37 (2) ◽  
pp. 195-208 ◽  
Author(s):  
Sanda Koboevic ◽  
Simona Olivia David
Keyword(s):  
Seismic Response ◽  
Seismic Performance ◽  
Control Design ◽  
Design Criteria ◽  
Braced Frames ◽  
Local Response ◽  
Shear Forces ◽  
Seismic Behaviour ◽  
Eccentrically Braced Frames ◽  
Global And Local

This paper describes a study of the seismic behaviour of taller eccentrically braced frames (EBFs). Chevron-type EBFs with shear-critical links are designed for 14-, 20-, and 25-storey buildings in Montreal and Vancouver. For each location the importance of different design criteria is discussed and an appropriate design sequence is proposed. It was found that ductility requirements did not control design. For Vancouver, buildings member selection was mostly influenced by the inelastic inter-storey drift requirements whereas for Montreal ensuring the global frame stability was critical. The seismic response of these frames to the sets of earthquake records calibrated to match design spectra is described. The seismic performance for Vancouver frames was found to be adequate, except that in the upper storeys the inelastic link deformations and shear forces exceeded values anticipated in design. For the Montreal structures, all global and local response indicators remained well below the design limits.

scholarly journals An Enhanced Beam Model for the Analysis of Masonry Walls

2019 ◽  
Vol 13 (1) ◽  
pp. 52-66
Author(s):  
Massimiliano Lucchesi ◽  
Barbara Pintucchi ◽  
Nicola Zani
Keyword(s):  
Tangential Stress ◽  
Shear Failure ◽  
Failure Mechanisms ◽  
Masonry Walls ◽  
Beam Model ◽  
Local Response ◽  
One Dimensional ◽  
Shear Component ◽  
Computational Code ◽  
Global And Local

Background: Some typologies of masonry constructions (e.g. towers or walls with openings) can be reasonably studied through simple beam or frame-like models. For these structures, shear mechanisms often play an important role inducing failure and collapse. Objective: The paper presents an enriched beam model for studying the in-plane response of masonry walls. Initially formulated for masonry columns, towers and masonry slender structures in general, the model is now modified in order to also capture the shear failure mechanisms, in addition to the flexural ones. Methods: Starting with a one-dimensional no-tension model, a strength domain in the plane of the axial and tangential stress of the beam has been added, which has been defined by limiting both the stress shear component with respect to any possible direction and the main compressive stress. Results: The model, implemented in the FEM computational code MADY, allows for short computational times in studying the response of single panels as well as walls with openings. Conclusion: Comparisons with some experimental results from literature and some numerical results from more refined 2D models show the effectiveness and accuracy of the model’s predictions in terms of global and local response.

Seismic Behavior of a Tall Building Reinforced with High Strength Bars

2019 ◽  
Author(s):  
Husain S. A. Aldahlki ◽  
Mary Beth Hueste
Keyword(s):  
Structural Response ◽  
Tall Buildings ◽  
High Strength ◽  
Tall Building ◽  
Local Response ◽  
Three Dimensional Model ◽  
Building Site ◽  
Seismic Force ◽  
Global And Local

<p>Reinforced concrete tall buildings are widely spread around the world. Tall buildings in high seismic regions have substantial capacity requirements due to both gravity loads and seismic demands that often lead to very heavily congested sections. Therefore, using high strength reinforcement with a reduced area of steel bars introduces a valuable solution. However, the tensile characteristics of high strength reinforcement differ from conventional reinforcement and may lead to differences in the structural response and behavior of structural members. Consequently, the global response of the building seismic-force-resisting system (SFRS) could vary from that of a conventional steel reinforced SFRS. This study investigates the global and local response of a tall concrete building reinforced with high strength reinforcement (Grade 100 (690 MPa)) when subject to earthquake demands. A three-dimensional model for a case study building, which is a 46-story tall building, was prepared. By using the capabilities of nonlinear analyses in OpenSees, the building model was developed and analyzed. The performance of the building reinforced with conventional and high strength reinforcement was investigated and reviewed according to the Tall Building Initiative (TBI) guidelines. Eleven different ground motions were selected and scaled to represent the Risk-Targeted Maximum Considered Earthquake (MCER) level for the case study building site. The global and local response parameters showed that the tall building reinforced with a reduced area of high strength steel (Grade 100 (690 MPa)) performed similarly to the same building reinforced with conventional reinforcement (Grade 60 (414 MPa)). The results provide information relevant to the implementation of high strength reinforcement in seismic applications and serves to increase the understanding of the resulting impacts on the structural response of a case study tall building.</p>

Vibration-based damage assessment of steel structure using global and local response measurements

2015 ◽  
Vol 45 (5) ◽  
pp. 699-718 ◽  
Author(s):  
Chin-Hsiung Loh ◽  
Chuan-Kai Chan ◽  
Sheng-Fu Chen ◽  
Shieh-Kung Huang
Keyword(s):  
Damage Assessment ◽  
Steel Structure ◽  
Local Response ◽  
Global And Local

Sunspot Groups as Tracers of Sub-Surface Processes

2000 ◽  
Vol 179 ◽  
pp. 155-160
Author(s):  
M. H. Gokhale
Keyword(s):  
Magnetic Flux ◽  
Indian Institute ◽  
Surface Processes ◽  
The Sun ◽  
Global And Local ◽  
Sunspot Groups

AbstractData on sunspot groups have been quite useful for obtaining clues to several processes on global and local scales within the sun which lead to emergence of toroidal magnetic flux above the sun’s surface. I present here a report on such studies carried out at Indian Institute of Astrophysics during the last decade or so.

Establishing global and local coherence in discourse processing: Evidence from fMRI

2009 ◽  
Author(s):  
Paul van den Broek ◽  
Ben Seipel ◽  
Virginia Clinton ◽  
Edward J. O'Brien ◽  
Philip Burton ◽  
...  
Keyword(s):  
Discourse Processing ◽  
Local Coherence ◽  
Global And Local
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