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"Structural behavior"
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The agility shift : creating agile and effective leaders, teams, and organizations
\"As contrary as it sounds, \"planning\" - as we traditionally understand the term-can be the worst thing a company can do. Consider that volatile weather events disrupt trusted supply chains, markets, and promised delivery schedules. Ever-shifting geo-political tensions, as well as internal political upheaval within U.S. and global governments, derail long-planned new ventures. Technology failures block opportunities. Competitors suddenly change their product or release date; your team cannot meet the pace of innovations in your market niche, leaving you sidelined. There are myriad ways in the current business environment for a company's well-considered business plans to go awry. Most business schools continue to prepare managers to be effective in stable and predictable environments, conditions that, if they ever existed at all, are long gone. The Agility Shift shows business leaders exactly how to make the radical mindset and strategy shift necessary to create an agile, entrepreneurial organization that can innovate and thrive in complex, ever-changing contexts. As author Pamela Meyer explains, there is much more involved than a reconfiguration of the org chart and job descriptions. It requires relinquishing the illusion of control at the very foundation of most management training and business practice. Despite most leader's approaches, \"Agility is not simply accelerated planning.\" Unlike many agility books on the market, The Agility Shift provides specific, actionable strategies and tactics for leaders at all levels of the organization to put into practice immediately to improve agility and achieve results. \"-- Provided by publisher.
Book
Experimental Evaluation of a Concealed Anchoring System for Large-Format Thin Ceramic Panels Under Wind Loading in Ventilated Façades
Large-format thin ceramic panels are increasingly used in ventilated façade systems due to their reduced weight, high durability and architectural versatility. However, their reduced thickness and large dimensions require reliable anchoring solutions capable of safely transferring wind loads to the supporting structure. This study investigates the structural behaviour of a concealed mechanical anchoring system for large-format porcelain stoneware panels installed in ventilated façades. An experimental campaign was carried out using a full-scale façade prototype representative of real construction conditions. The specimen was subjected to incremental wind pressure and suction loading in a controlled laboratory environment while monitoring the deformation of the ceramic panels, backing support layer and aluminium substructure. The experimental results show that the ceramic panels exhibited stable structural behaviour without cracking or anchor pull-out under pressure levels up to 3006 Pa, exceeding twice the design service pressure. The maximum estimated deflection at the service pressure level (1300 Pa) was 5.7 mm, significantly below the admissible limit defined by the L/200 serviceability criterion. A simplified mechanical analysis based on classical bending theory confirmed that the stresses induced in the ceramic panels remained well below their flexural strength. The results demonstrate that the investigated concealed anchoring system provides reliable structural performance for large-format thin ceramic panels subjected to wind loading in ventilated façade systems, while the simplified analytical verification confirms the mechanical consistency between the measured deformation levels and the flexural capacity of the ceramic material.
Journal Article
Organization design : a guide to building effective organizations
\"A complete guide to organization design, this book offers both an understanding of organizational theory as well as practical advice for how to implement OD in any organization. Divided into three sections, it covers the fundamentals of organizational design, provide a unique step-by-step methodology, and discuss solutions to recurring challenges. Topics include: the essential building blocks, mapping design options, how to assess capability maturity, how to size an organization, and how to maintain design integrity over time. Readers will gain the confidence and skills to put great organization design into practice to ensure business success. This second edition is updated with new case studies and short examples throughout particularly focusing on adding HR and International studies, more tips for practitioners, summaries at the beginning of each chapter and reflections at the end of each chapter\"-- Provided by publisher.
Book
A simplified analytical modeling approach for the structural analysis of massive masonry structures
This paper, presents a simplified analytical modeling approach to determine the structural behavior of historical buildings. Analytical modeling is a digital tool for determining the behavior of masonry buildings under the influence of dynamic and static loads. In the analytical modeling process, different types of elements are involved to represent buildings. Due to the complex geometrical features of historical buildings, it is significant to the preference for convenient elements. Mardin Great Mosque was discussed and analyzed for the selection of convenient element preferences. Three different mosque models were built and analyzed by using three different element types (frame, shell, solid). In the findings of the paper, the values at the same points on the models were compared. When the first natural vibration period was examined, the first model is 0.76sec, the second model is 0.76sec, and the third model is 0.71sec. In addition, considering the base shear under dead load, 98.35% similarity was observed. As a consequence of the geometrical features of historical buildings, inappropriate definitions and inconvenient element preferences emerge the results questionable. Therefore, to be able to manage the analytical modeling process effectively requires accurate and appropriate definitions of the elements to be preferred.
Journal Article
Influence of Wire Arc Additive Manufacturing Beads’ Geometry and Building Strategy: Mechanical and Structural Behavior of ER70S-6 Prismatic Blocks
Wire arc additive manufacturing (WAAM) with high deposition rates has attracted industry interest for the demonstrated economic production of medium-to-large-scale metallic components. The structural integrity and mechanical properties of the built parts depend on the selection of the optimum deposition parameters and the tool path strategy. In this study, an alternate orthogonal deposition strategy was employed. The influence of the beads’ geometry and the associated heat input on the mechanical and structural behavior of mild steel (ER70S-6) were investigated. The influence of the bead width (BW) and the overlapping percentage (OP) between the adjacent beads on the average and layer-by-layer hardness of the blocks along the building direction were evaluated. Tensile strength was also characterized. The alternate orthogonal building strategy enhanced the geometrical uniformity of the built blocks and the microstructural isotropy along the building direction. Increasing the BW increased the total heat input per bead per layer, which significantly reduced the hardness and tensile strength of the built blocks by 19% and 17% compared to 8% and 7% when increasing the OP, respectively. Total heat input, number of heating cycles, and cooling rates triggered the phases formed, and their morphologies along the building direction were also characterized.
Journal Article
Effects of Geometric Nonlinearity and Aerodynamic Damping on the Dynamic Structural Response of Tall Buildings: A Case Study
This research work aims to assess the dynamic structural behaviour of tall buildings when subjected to wind loads considering the effect of the geometric nonlinearity and the aerodynamic damping, due to the relative movement between the structure and the wind. This way, a case study associated to a steel–concrete composite building with 48 floors and 172.8 m height is considered to investigate the dynamic response of tall buildings when subjected to wind nondeterministic actions. The effects of the geometric nonlinearity and the aerodynamic damping are included in the dynamic analysis. A numerical model of the investigated building was developed in order to obtain a more realistic representation of the structural system based on the modelling of the effect of the soil-structure interaction. The building finite element model was developed based on the use of modelling techniques, adopting the mesh refinement present in the Finite Element Method (FEM) and implemented in the ANSYS software. Based on the displacements and accelerations values, this study concluded that the effect of the geometric nonlinearity led to relevant differences on the investigated building dynamic structural response, with maximum differences in the range of 5% to 30% to the horizontal translational displacements and 15% to 45% to accelerations, taking into account a wind basic velocity range from 5 m/s [18 km/h] up to 45 m/s [162 km/h]. On the other hand, the contribution of the effect of the aerodynamic damping was not significant, with maximum differences up to 5% to the displacements and up to 10% for the accelerations.
Journal Article
Lifting Test and Analysis of a Segmented Arch System with Outrigger Ribs and Flexural Loading Tests of Precast Panels
A segmented precast panel arch system with a steel outrigger rib was proposed to efficiently exploit material characteristics and a structural section, which resists the internal and external forces caused by arch effects. This study was conducted lifting and installation tests of this arch system and flexural loading tests for precast panels to validate and examine its structural behavior. The load-bearing capacity of a precast panel was experimentally evaluated against the flexural loading that occurred during the lifting process in the flexural loading test. In the lifting experiments for the fabricated arch specimen with a span length and height of 6.2 m and 2.5 m, respectively, the structural behavior of the precast panels and outrigger ribs during lifting were compared with the structural deformations and stresses of the system components after final installation. From the lifting and installation tests conducted in this study, the structural response and behaviors of the proposed arch system and its components were validated and evaluated.
Journal Article
Effect of Preload on Box-Section Steel Columns Filled with Concrete under Axial Load: A Numerical Study
External loads applied to a box-section steel column before it is filled with concrete to increase its efficiency due to modifications in structural systems or design errors may reduce its ultimate capacity and change its structural behavior. To examine this effect, finite element modeling (FEM) has been used to simulate these columns under preloading at different ratios with many variables in the geometric dimensions of the columns. The FEM results have been investigated using 38 experimental specimens obtained from previous studies without preloading. The results demonstrated high accuracy in modeling these columns in structural behavior and ultimate load capacity. After verifying the results, 84 Concrete-Filled Steel Columns (CFSC) were modeled under different preload ratios. The results indicated that some variables have directly affected the value of the decrease in column capacity in terms of its height, wall thickness, yield stress, and preload ratios, while others were inversely proportional in terms of the cross-section dimensions and concrete strength. The preload effect ratio had two separate limits, where when it reached 70%, the maximum value of the decrease in column capacity was 10.90%. The value increased sharply reaching 19.90% when there was a preload equal to 80%. New equations have been proposed to predict the ultimate capacity of CFSC under preloading with suitable accuracy with a correlation coefficient of no less than 0.949.
Journal Article
Structural Behaviour and Mechanical Characteristics of BlueDeck Profiled Steel Sheeting for Use in Composite Flooring Systems
The BlueDeck profiled steel sheeting system offers an innovative composite flooring solution, integrating high-strength steel sheets with reinforced concrete to form a unified structure. This study aimed to evaluate the development of full composite action, the ultimate bearing capacity, and the flexural stiffness of the system. A comprehensive experimental programme involving 18 four-point bending tests and 6 shear tests was conducted to quantify the mechanical interaction between the steel deck and concrete slab. This study specifically examined bending capacity and vertical deflection, comparing the results with predictions from AS/NZS 2327. It was found that the system consistently achieved full composite action, with composite specimens demonstrating higher flexural stiffness and load-bearing capacity as the concrete depth increased. For example, specimens with 200 mm slab depths exhibited a 60% improvement in ultimate capacity compared to those with 150 mm slabs, while those with 175 mm depths saw a 27% increase. Additionally, the BlueDeck system showed an 81% improvement in de-bonding resistance in thicker slabs. The experimental results exceeded the bending moment and deflection limits prescribed by AS/NZS 2327, confirming that the system is structurally sound for use in buildings. This study provides quantitative evidence supporting the system’s compliance with Australian standards, highlighting its potential for improving construction efficiency through reduced material use, while maintaining structural integrity under imposed loads.
Journal Article
Experimental Study on the Structural Behavior of the Oldest Timber Frame in China
The main hall of the Nanchan Temple, the oldest wooden building of the Tang Dynasty (782 C.E.) in China, was built 1200 years ago, representing a valuable heritage building. Thus far, research on the Nanchan Temple has focused on stylistic comparisons and historical documentary evidence. This study concentrates on the oldest timber-framed structure, with our experiments designed to understand the structural behavior of the hall. In this study, a 1:10-scaled specimen of a timber-framed building was fabricated based on the construction method of Yingzao Fashi, and the main hall of the Nanchan Temple was first reviewed; then, quasi-static tests were conducted under different vertical loads to ascertain the seismic mechanism of the oldest wooden building. The stiffness, energy dissipation, vertical load transfer path, bending stress of the component, and axial force were investigated. According to the results obtained on the vertical load transfer path, the roof was found to cause stress to the structural sections. The results indicate that the vertical load of the roof above Cha Shou is transferred down through Ping Liang; it then passes through Ping Liang to Tuo Feng and eventually passes to Sichuan Fu, which causes deformation. We increased the vertical loads, resulting in the increased lateral resistance (resilience) of the Nanchan Temple, and the stability of the timber-framed building in relation to the vertical loads was investigated. Moreover, the effects of horizontal and vertical loads were studied, and thus, we provide proposals for repair and conservation.
Journal Article