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 65 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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Durchstanzen schubbewehrter Flachdecken im Bereich von Innenstützen
… experimental and theoretical state of the art in punching design. From literature, 303 punching tests without shear reinforcement and 270 tests with shear reinforcement were systematically documented in a data base. Additionally, some representative punching design models were judged by the test …
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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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Zur Zuverlässigkeit der Bemessung gegen Durchstanzen bei Einzelfundamenten
… presented and applied to determine the safety of punching design equations for footings. Around the columns large moments and vertical shear forces arise in the footings. These forces can cause a local shear failure, which is called punching shear failure. In general, design codes do not …
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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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Einfluss der Bodenreaktionskraft beim Durchstanzen von Einzelfundamenten
The punching shear capacity of footings varies significantly for different codes. The amount of the soil reaction to be deducted from the punching load differs from one code to another. The aim of the present investigation is to derive an advanced design model for the punching behaviour of footings …
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Zum Durchstanzen von Flachdecken unter Berücksichtigung der Momenten-Querkraft Interaktion und der Vorspannung
… shear failure of flat slabs, which is called punching, is classified as a nonductile failure. With internal columns of horizontally stiffened structures, the stresses are almost symmetrically distributed. However with edge and corner columns, the fixed-end moment from the rigidity of the …
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