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 60 for “"Punching"”.
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Punching shear in pad foundations on rock
… the design of these foundations is found to be punching shear. The physical properties of sound rock under load suggest that a pad foundation on rock will exhibit a different behaviour than that predicted by codes. This dissertation is meant to encourage and lead the way to further research in …
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Characterization of Punching Shear Capacity of Thin Uhpc Plates
… reinforcement allowed for the possibility of a punching shear failure to occur from the application of a point load such as a wheel tire patch load. The model and optimized section served as the foundation for this research, the characterization of punching shear capacity of thin UHPC plates. A …
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Punching failure and compressive membrane action in reinforced concrete slabs
This study of punching failure and compressive membrane action in reinforced concrete slabs provides a basis for the development of a more realistic design approach for continuous slabs subjected to concentrated loadings.The results of an extensive series of tests on one quarter scale models of the …
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Evaluation of post punching capacity of flat plates under progressive collapse
This research investigates the post-punching resistance of flat-plate buildings without continuous bottom reinforcement. An overview on both the historical development of the analytical theories of punching mechanisms and post punching mechanisms as well as the evaluation of post punching capacity …
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An analysis of through-hole punching in PMMA with varied process parameters
The ability to combine through-hole punching with a surface patterning during microembossing would greatly enhance the production of a variety of microfluidic devices. In support of that goal, a series of theoretical simulations and physical tests were performed to investigate the effect of …
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Punching Holes in the Cloud: Direct Communication between Serverless Functions Using NAT Traversal
… using an external server, we implement TCP hole punching to establish direct TCP connections between functions. In addition, we develop a communications framework to manage NAT traversal and data flow for applications using direct network connections. We evaluate this framework with a …
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Physical and mechanical properties of cotton waste nonwoven web produced by needle punching method
… of cotton waste nonwoven web by using the needle punching method. The cotton waste fibres were needle-punched with various fibre feeder speeds of 1.8 m/s, 2.2 m/s, and 2.8 m/s. These speed parameter were chosen based on the machine capability. The types of needle loom and needle density used were …
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Tilt-up concrete panels : an investigation of flexural stresses and punching shear during lifting
… of high shear stress and the associated punching shear in the vicinity of the pick points could result in pullout. For these reasons, it is particularly important to design the concrete and steel reinforcement to handle the flexural and shear stresses associated with panel erection. This …
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An investigation into the punching shear failure in R.C. waffle slabs subjected to concentrated load
… when subjected to concentrated loads. The punching shear failure inside waffle slabs has not been thoroughly investigated and this is also reflected in the current code of practice, which, in the main, relates the design of punching shear in waffle slabs to that in solid slabs. In this …
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Punching shear capacity of flat slab-column junctions (a study by 3-D non-linear finite element analysis)
This thesis presents a study of punching shear capacity of flat slab-column junctions. A three dimensional non-linear finite element program based on 20 node isoparametric solid element was used for the investigation. The non-linear 3-D elastic isotropic model proposed by Motsovos was used to …
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An experimental study and finite analysis of punching shear failure in steel fibre-reinforced concrete ground -suspended floor slabs
… effect of using steel fibre-reinforcement on the punching shear behaviour of ground-suspended slabs with internal columns. The main objectives of this research were to develop a constitutive model for steel fibre-reinforcement (SFRC), to study experimentally the punching shear behaviour of SFRC …
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Development of a punching technique for ductile fracture testing over a wide range of stress states and strain rates
… experiments, continues with qusistatic punching experiments, and finishes with dynamic punching experiments. In the punching experiments, a thin sheet is clamped into a circular die and loaded in membrane tension through out-of-plane punching. The state of stress is changed from …
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An exploratory analysis of factors influencing punching force in combat sports, with a specific focus on the jab and the cross
This study examines factors influencing punching force in combat sports, focusing on jab and cross punches. While punching force has been widely studied in boxing, research across various combat sports remains limited. This research addresses that gap by analysing punching force among amateur and …
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The chemical structure and mechanical properties of phenolic resins and related polymers
… from these materials by the process known as punching. Recently an investigation was carried out to study the effect of processing variables on the punching properties. It was concluded that further work would be justified and that this should include a critical examination of the resin …
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The effects of augmented feedback on pacing and performance of elite combat athletes
… neutral feedback were examined in relation to punching velocity (m·s-¹) and normalized impact forces (N·kg-¹) among intermediate (n= 8) and expert (n= 7) competitive boxers and kickboxers. Athletes completed three rounds of 12 maximal effort punches delivered to a punching integrator on three …
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Edge Fracture Prediction Of Dual Phase Steels With Consideration Of Microstructures
… The HE test includes two processing steps: hole punching and hole expanding. The punching process creates holes of various sheared edge morphologies, which are the input to the hole expanding process, along with the intrinsic property of material, produce a joint effect on the crack initiation …
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Column Footings Strengthened with External Prestressing and External Wrapping Systems
… systems, especially on their improvements in the punching shear capacity. 353 models were built in ABAQUS. For each system, a unique group of parameters were considered and investigated. As an active system, CEP significantly improved the punching shear capacity of RC footings, and the number of …
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