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Showing 1 to 20 of 244 for “"crushing"”.
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Crushing characteristics of axially stacked square tubes
The crushing and energy absorption characteristics of thin-walled specimens consisting of single, welded and two axially stacked plate-divided mild steel square tubes were investigated by the performance of numerous quasi-static and dynamic axial crushing tests and FEM (finite element modeling). …
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Analysis of bow crushing in ship collision
Collision of ships with oil tankers poses, next to grounding, one of the most serious environmental threats at sea. In many previous analyses of the collision problem, the bow of the impacting ship was considered rigid. The objective of the present research is to include the finite strength of the …
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On the quasi-static and dynamic crushing of random foams
… is developed in order to investigate the crushing behavior of Al-alloy open-cell foams under quasi-static and dynamic loadings. Quasi-static crushing produces a response that exhibits a relatively stiff linearly elastic regime that terminates into a load maximum; it is followed by an …
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INVESTIGATING PIGLET CRUSHING BY THE SOW: A DATA MINING APPROACH
… studies demonstrate a high variability of crushing rate among sows submitted to the same physical environment. It is possible that factors other than the system’s physical configuration may be affecting the maternal behavior of sows and causing increased crushing. Therefore, the objective …
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Inelastic web crushing performance limits of high-strength-concrete structural walls
… (HSC).The possibility of web crushing failure in shear dominated reinforced concrete element rises when the dimensions of the boundary elements become larger and the webs becomes thinner. Web crushing, or diagonal compression failure, manifests itself as compression failure of …
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Design of a crushing and agglomeration process for manufacturing bagasse charcoal
… test, and optimize the parameters of this novel crushing and agglomeration process. The final prototype was found to effectively crushing charcoal and mix charcoal with binder to some extent, while being an inexpensive alternative to reduce overall charcoal exposure. However, the mixing and …
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Simulation of the crushing of a two-dimensional particle bed due to compressive loading
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.
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The relationship between the crushing strength of brittle materials and the size of cubical specimens tested
Cubes of coal have been tested in compression in the past, and it has been found. that the following formula, relating the compressive strength to the size of the cube can be applied: P = k .a- n Where P is the compressive strength in pounds per square inch. a is the edge dimension os specimens …
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A Comparison of Crushing Parameters of Graphite Composite Thin-Walled Cylinders Cured in Low and High Pressures
<p>Out-of-Autoclave (OoA) processes for manufacturing aerospace-grade parts needs to be better understood to further the development and success of industries that are manufacturing reusable launch vehicles, military and commercial aircraft, and spacecraft. Overcoming the performance limitations …
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Numerical Methods for Predicting the Dynamic Crushing Response and Energy Absorption of Composite Aluminum Honeycomb Sandwich Structures
<p>Edgewise crushing responses of composite aluminum honeycomb sandwich structures were predicted using finite element analysis (FEA) software LS-DYNA by modeling the honeycomb as a material with anisotropic properties. The goal of the project was to develop a process for modeling the sandwich …
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Analysis of Bone Crushing Behavior of the Dire Wolf (<em>Canis dirus</em>) Using Dental Microwear Texture Analysis.
<p>It has been hypothesized that dietary differences in bone consumption exist between the extinct Pleistocene dire wolf (<em>Canis dirus</em>) and the modern gray wolf (<em>C. lupus</em>). Here dental microwear texture analysis of the m2 is used to test the hypothesized dietary behavior of <em>C. …
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Crashworthiness analysis of ultralight metal structures
… the two walls. This research is to study the crushing behavior of the ultralight metal core and to determine the crashworthiness and the weight saving of structures composed of the two types of reinforced components, each of which may undergo axial crushing, bending, or twisting. Numerical …
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Assessing the impact of tablet crushing, dose, and high-calorie, high-fat meal on vericiguat absorption from the upper gastrointestinal lumen using standardized commercially available equipment and materials
Σκοπός: (1) Να συνδυαστούν μια πρόσφατα προταθείσα in vitro μεθοδολογία για την εκτίμηση της ενδογαστρικής αποσάθρωσης προϊόντων άμεσης αποδέσμευσης μετά από γεύμα υψηλής περιεκτικότητας σε θερμίδες και σε λίπη με μια βελτιστοποιημένη δυναμική in vitro διάταξη για την εκτίμηση της …
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LS-Dyna for Crashworthiness of Composite Structures
… has limited their use. The study of axial crushing behavior of metal and composite tubes has become an important aspect for the design of crashworthy structures in aircraft and automotive applications. This behavior can be studied using different crushing modes based on different failure …
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Effect of Minimum Suppression and Maximum Release Years on Compression Parallel to Grain Strength and Specific Gravity for Small-sized Yellow-poplar (Liriodendron tulipifera L.) Specimens
… of growth suppression and release on ultimate crushing stress and specific gravity for small-sized yellow-poplar specimens. Additionally, the relationship between specific gravity and ultimate crushing stress is investigated. Twenty-three yellow-poplar cores were examined for their growth ring …
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Energy-absorption capability of composite tubes and beams
… capability, an in-depth understanding of the crushing process of composite materials must be achieved. Many variables affect the crushing process of composite structures, such as the constituent materials’ mechanical properties, specimen geometry, and crushing speed. A comprehensive …
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Energy absorption performance of braided basalt reinforced composite tubes under axial loads
… basalt composite tubes associated with axial crushing loadings. A series of thin-walled and sandwich composite tubes were fabricated using braided basalt/epoxy composite and expanded polyurethane foam. The axial crushing tests of these tubes under quasi-static and impact loads were carried …
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Precombustion Removal of Hazardous Air Pollutant Precursors
… using physical cleaning techniques (i.e., crushing, dense media separation, froth flotation, and enhanced gravity separation). The bench-scale test circuit incorporated crushing and rewashing a coarse, mid-density product with hopes that trace element rejections would improve due to greater …
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Crash behavior of three dimensional thin-walled structures under combined loading
… system, a thorough understanding of crushing behavior of thin-walled structural members such as spot-welded sheet metal beams or extruded aluminum beams must be gained. In the present thesis, the complex crushing process of three-dimensional thin-walled structures subject to combined …
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