Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 71 for “"Semi-rigid"”.
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Semi-rigid behaviour of plane timber structures
… to either assume that the joints are pinned or rigid. In fact the real behaviour of a joint is neither pinned nor rigid, and lies somewhere between the pinned and rigid assumption. This is referred to as the semi-rigid behaviour. Semi-rigidity not only refers to the rotational behaviour of the …
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Seismic behavior of semi-rigid steel frames
… of steel frames in seismic areas. Bolted semi-rigid connections have been recognized as an attractive alternative to welded connections. However, existing knowledge on the behavior of the connection is either from testing of beam-to-column subassemblies under idealized load and boundary …
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Functional Polymers Containing Semi-Rigid Alternating Sequences
… of functionalized copolymers that contain semi-rigid alternating copolymer sequences. The fluorescence properties of a series of non-conjugated, tert-butyl carboxylate functionalized alternating copolymers were investigated. Extraordinarily high fluorescent intensity with excellent …
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Behavior of composite semi-rigid beam-to-girder connections
… connection referred to as a composite semi-rigid beam-to-girder connection is investigated as a possible method to provide partial continuity in floor systems. Four of these connections are evaluated experimentally and analytically to determine their behavior and the feasibility of …
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Experimental and theoretical analysis of boltless semi-rigid connectors
… research was to investigate the behaviour of the semi-rigid boltless connectors used in cold formed thin walled rack structures. A typical beam end connector consists of an end plate welded to the end of a beam and an interlocking arrangement that engages with perforated columns at optional …
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Hybrid simulation of steel frames with semi-rigid connections
… below. Full-scale hybrid simulation of a semi-rigid steel frame is conducted and its ductility and drift ratios are studied. The experimental component of the simulation comprises a beam-column subassembly with top and seat angle with double web angle connection and is instrumented to …
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Modelling and analysis of composite structures with semi-rigid connections
… are either designed as pinned or designed as rigid. Recent research has shown that semi-rigid joint behaviour may be achieved in composite joints by considering only a small amount of reinforcement over the connections. However due to the lack of design provisions and a simple and effective …
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The Seismic Behavior of Steel Structures with Semi-Rigid Diaphragms
… performance of steel structures with and without rigid diaphragm constraints through numerical simulations and evaluates the appropriateness of relevant design provisions in current seismic design codes. In the first part of the work, six theme structures with different (1) in-plane stiffness of …
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Synthesis and Solution Properties of Semi-rigid Polyelectrolytes and Polyampholytes
… crowded polymer backbones are classified as semi-rigid. As this is an uncommon category of polymer backbone rigidity, examples of semi-rigid and rigid polyzwitterions in the literature were reviewed as well as stilbene-containing semi-rigid polymers. Using a deprotection strategy, anionic …
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Experimental analysis of king-post truss with semi-rigid joints
… strong and stiff, but it is not perfectly rigid. The effect of non-rigidity of joints in resisting bending and thrust are investigated in this paper. The purpose of this study is to determine the rotation and slip of truss members relative to plywood gussets which influence the moment, …
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Semi-rigid joints for moment-resisting steel framed seismic-resisting systems
This thesis describes the development of new semi-rigid joints for moment-resisting steel framed (MRSF) seismic-resisting systems. Intended as the weak link in the seismic-resisting system, in accordance with a strong column, weak joint philosophy, the joints and systems were designed and detailed …
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Conformational and Orientational Dynamics of Semi-Rigid Macromolecules in Shear Flow
"The third study involves the conformational and phase stability of aqueous Poly-L-Lysine solutions in shear flow. Poly-L-lysine exists as an $\alpha$-helix at high pH and a random coil at neutral pH. When the $\alpha$-helix is heated above 27$\sp\circ$C, the macromolecule undergoes a …
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A study of semi-rigid connections between longspan joists and columns
… analysis and design of a particular type of semi-rigid connection between longspan joists and columns. It is also an attempt to establish a correct technique for testing full size longspan joists and column connections. Although not commonly utilized in industry, in which longspan joists most …
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The influence of semi-rigid connections on the behaviour of slender structures
… the connections of the structures are either rigidly fixed or perfectly pinned. However, the real situation is that most connections often exhibit semi-rigid characteristics. This no doubt has a significant influence on the overall behaviour of the structures such as buckling capacity and …
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Serviceability Design of Long-Span Timber Beams Considering Semi-Rigid Beam-Column Connections
… gap, this thesis investigates the influence of semi-rigid connection stiffness on the deflection behaviour of long-span timber beams and develops a validated, design-oriented framework that explicitly incorporates realistic end connection behaviour. The research is structured into three …
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The Influence of Semi-Rigid Connections on the Behaviour of Beam and Column Structural System
… and the beam end connectors which provide semi-rigid connections between the beams and the uprights. The connections in storage systems are often boltless tabs. These tabs are engaged into perforations in the cold-formed upright sections at variable heights determined by the perforation …
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The influence of semi-rigid connections on the non-linear behaviour of pallet rack and scaffold structures
… between uprights and beams are either rigid or pinned. In reality all joints exhibit flexibility and can be considered as semi-rigid. The published work in this thesis provides some of the most extensive work on the effects of semi-rigid connections on the behaviour of slender, …
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Optical Measurements of High-Viscosity Materials Using Variations of Laser Intensity Incident on a Semi-Rigid Vessel for use in Additive Manufacturing
Additive manufacturing is a growing field dominated by printing processes that soften and re-solidify material, depositing this material layer by layer to form the printed shape. Increasingly, researchers are pursuing new materials to enable fabrication of a wider variety of associated …
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An experimental study on the cyclic behaviour of riveted stiffened seat angle connection with concrete encasement.
… constructed using what are considered today as semi-rigid or flexible types of connections. A concrete encasement was typically added to columns in the past for the sole purpose of fire protection. The behaviour of semi-rigid connections under cyclic loading and the contribution to seismic …
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