scholarly journals Effect of Intake Parameters on Lifting Force of Swirl Gripper

2021 ◽  
Vol 14 (2) ◽  
pp. 49-56
Author(s):  
Mitsuhiro NAKAO ◽  
Yuta YAMANOUCHI ◽  
Minoru FUKUHARA
Keyword(s):  
Lifting Force

DEVELOPMENT OF BREAD FORMULATION USING OF BARNYARD GRASS (ECHINOCHLOA FRUMENTACEA) FLOUR TO IMPROVE THE QUALITY

2019 ◽  
Author(s):  
Н.Н. ФИЛОНОВА ◽  
С.В. ЯЦЕНКО ◽  
М.К. САДЫГОВА
Keyword(s):  
Control Sample ◽  
Ash Content ◽  
High Rate ◽  
Bakery Products ◽  
Barnyard Grass ◽  
Bread Crumb ◽  
Rye Bread ◽  
Lifting Force ◽  
Echinochloa Frumentacea ◽  
Better Than

Оптимизирована рецептура хлеба «Паляница украинская» путем введения 15% пайзовой муки (ПМ) и 5% льняной муки (ЛМ) взамен части пшеничной. Образец с добавкой 15% ПМ и 5% ЛМ имел достаточно высокий показатель бродильной активности и самый высокий показатель подъемной силы – 28 мин в отличие от образца с тем же количеством ПМ, но без добавки ЛМ (43,3 мин) и контрольного образца без добавок (45,5 мин). Добавка в рецептуру хлеба ПМ увеличила в нем содержание белка на 14,68%, золы – более чем в 2 раза. Добавление ЛМ нейтрализовало специфические аромат и вкус пайзы, повлияло на формоудерживающую способность полуфабриката: во время выпечки изделие не расплывалось, выпеченный хлеб имел эластичный пропеченный мякиш с равномерной пористостью, на корке отсутствовали трещины и подрывы. В результате добавки ПМ и ЛМ опытный образец приобрел насыщенный цвет корки и мякиша, приятный аромат, напоминающий аромат ржаного хлеба. Образец хлеба, содержащий 15% ПМ и 5% ЛМ, по истечении 72 ч хранения имел наименьший показатель крошковатости – 3,59% к массе мякиша хлеба и самый высокий показатель набухаемости – 154,5%, лучше других образцов сохранил потребительские качества: вкус и аромат изделия практически не изменились, мягкость мякиша снизилась незначительно. Внесение ПМ взамен части пшеничной в рецептуру хлеба способствует увеличению продолжительности срока хранения изделия, что позволяет рекомендовать использование пайзовой муки в производстве хлебобулочных изделий. The formulation of bread «Palyanitsa ukrainskaya» is optimized by introducing 15% of barnyard grass flour (GF) and 5% of flax flour (FF) instead of wheat flour. The sample with the addition of 15% of GF and 5% of FF had a sufficiently high rate of fermentation activity and the highest rate of lifting force – 28 min in contrast to the sample with the same amount of GF, but without the addition of FF (43,3 min) and the control sample without additives (45,5 min). Additive in bread formulation GF increased its protein content by 14,68%, ash content – more than 2 times. The addition of FF neutralized the specific flavor and taste of the barnyard grass, influenced the form-holding ability of the semi-finished product: during baking the product was not blurred, the baked bread had an elastic baked crumb with uniform porosity, cracks and explosions were absent on the crust. As a result of the addition of GF and FF the prototype acquired a rich color of crust and crumb, a pleasant aroma reminiscent of rye bread. A sample of bread containing 15% GF and 5% FF after 72 h of storage had the lowest crumbiness index – 3,59% by weight of bread crumb and the highest rate of swelling – 154,5%, better than other samples retained consumer qualities: taste and aroma of the product has not changed, the softness of the crumb decreased slightly. Introduction of GF instead of part wheat in the bread formulation helps to increase the duration of the shelf life of the product, which allows us to recommend the use of barnyard grass flour in production of bakery products.

Failure Analysis of Coil Racks in a Batch Annealing Furnace Using Finite Element Methods

2020 ◽  
Author(s):  
Nicholas J. Walla ◽  
Hua You ◽  
Xinyu Zhu ◽  
Chenn Q. Zhou ◽  
Matthew Liddick
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Severe Stress ◽  
Annealing Furnace ◽  
Simulation Data ◽  
Lifting Force ◽  
Batch Annealing ◽  
Steel Coils ◽  
Loading And Unloading ◽  
Uneven Heating

Abstract In this work, a series of finite element method simulations were performed on cooling racks used for the loading and unloading of steel coils in a batch annealing furnace. Normal furnace operations were simulated using ANSYS Thermal FEA and ANSYS Mechanical FEA to reproduce the thermal and structural loads experienced by the racks, as well as additional lifting forces representing removal by forklift after annealing. In addition to warping found due to uneven heating from the radiative elements of the furnace, severe stress leading to failure was identified on the base of the racks from the lifting force. These results correspond with failures seen in the actual units. The simulation data was used for design adjustments to reduce the damage from the above sources.

The Lifting Force, Flifting

2007 ◽  
pp. 45-48
Author(s):  
A HENDRICKSON
Keyword(s):  
Lifting Force

Contributions to a Future Inertial Motor and More

2013 ◽  
Vol 4 (1) ◽  
pp. 63-97 ◽  
Author(s):  
Dan Ciulin
Keyword(s):  
Mathematical Model ◽  
Gravitational Waves ◽  
Euler Equations ◽  
Electronic Devices ◽  
Trigonometric Functions ◽  
Jet Engines ◽  
Comprehensive Understanding ◽  
Life Conditions ◽  
Lifting Force ◽  
The Earth

For a future interplanetary trip, a space ship must be able to take off and/or land on a planet and travel at a convenient speed, insure convenient life conditions for the embarked crew, and keep contact with Earth. Chemical jet-engines used for the space ships must throw masses with enough speed to insure a convenient lifting force. Ion jet-engines, which have a much bigger jet-speed than chemical, may work for a longer time but the resulting force is small and cannot insure the take off and/or landing on a planet. A future inertial motor does not need to throw masses but needs only energy to produce the necessary lifting force. The paper presents contributions to build such a motor. As on a given vehicle, mainly rotations may be done to insure its propulsion, we start by presenting generally the rotations, at first for the electronic devices and then for mechanical one Methods that may convert the rotation into translation are after presented. Observing that the mathematical models used for rotations are extended from trigonometric functions to elliptical and ultra-elliptical ones, the author presents the differential equations that define such functions. Finally, using the modified Euler equations, a mathematical model for the gravitational waves is deduced. By using this type of waves, a permanent contact between an interplanetary ship and the earth can be kept. The presented tools may be used for modeling the fields and insure also a more comprehensive understanding.

Optical lifting force under focused evanescent wave illumination: A ray optics model

2005 ◽  
Vol 97 (8) ◽  
pp. 083103 ◽  
Author(s):  
Smitha Kuriakose ◽  
Xiasong Gan ◽  
James W. M. Chon ◽  
Min Gu
Keyword(s):  
Evanescent Wave ◽  
Ray Optics ◽  
Lifting Force

Oil Brush Seals in Turbomachinery: Flow Analyses and Closed-Form Solutions

2020 ◽  
Vol 142 (10) ◽  
Author(s):  
Ertuğrul Tolga Duran
Keyword(s):  
Closed Form ◽  
High Speed ◽  
Closed Form Solution ◽  
Frictional Heat ◽  
Rotor Speed ◽  
Test Rig ◽  
Lifting Force ◽  
Operation Conditions ◽  
Rotor Surface ◽  
Brush Seals

Abstract Brush seals are one of the most important dynamic seals used in oil and oil mist applications in industrial turbines and aviation. Flexible bristle structure is the main structural superiority of brush seals, which enables precise clearance control and high performance in compensating rotor transients. The viscous medium between the high-speed rotor surface and brush seal bristles generates a hydrodynamic lifting force that determines seal clearance and leakage rate in oil sealing applications. Shear heating at moderate and high rotor surface speeds results in an increase in temperature and stabilization of lifting force, which is known as high-speed lift stabilization. Strong temperature–viscosity dependency of lube oils possesses the need for a detailed analysis and understanding of the effect of shear heat on hydrodynamic lift of brush seals in oil applications. To provide a better understanding about the critical balance of hydrodynamic lift force with rotor speed, temperature, and pressure, this work presents an analytical study to investigate pressure profile and shear heat temperature rise in liquid sealing medium within the hydrodynamic lift clearance. A closed-form solution to pressure and temperature distribution in axial and radial directions has been obtained by solving continuity, Navier–Stokes, and thermal energy equations for brush seals. The thermal and pressure functions are evaluated for linear and nonlinear pressure drop approaches, and the results are compared with each other. Deviation in nonlinear and linear pressure, resulting temperature level differences, and effect of rotor speed are detailed within the content of this study. The provided closed-form functions for pressure and temperature profiles are useful for designers since these can be utilized for turbine operation conditions. Dynamic test rig design for high-speed leakage performance measurement of turbomachinery seals is detailed, where the test rig can also be adopted for stiffness, frictional heat, power loss, torque loss, and bucket tip stability testing in oil and air environment. The test setup can also be used for testing dynamic seals other than brush seals.

scholarly journals Parametric Optimization Design of Auto-unloading Mechanism Based on Adams

2018 ◽  
Vol 175 ◽  
pp. 03052
Author(s):  
Yongliang Yuan
Keyword(s):  
Optimization Design ◽  
Parametric Optimization ◽  
Optimal Parameter ◽  
Dynamic Performance ◽  
Reference Value ◽  
Lifting Force ◽  
Parameter Combination ◽  
Simulation Results ◽  
Mechanical Devices ◽  
Relationship Of

In order to improve the dynamic performance of a truck dump mechanism, the optimal parameter combination of the dump mechanism is studied. In combination with Adams' own modeling work, the dump mechanism is simplified and modeled and simulated. The objective function is optimized with the minimum lifting force, and the parameter combination of the best position relationship of the dump mechanism is obtained. The simulation results show that Adams can accurately predict the optimal parameter combination of mechanical devices, which have certain reference value for engineering design.

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