نتایج جستجو برای: Failure force
تعداد نتایج: 553828 فیلتر نتایج به سال:
abstractin this study, the tensile force requirement, to separate the grain paddy was measured. the velocities of grain paddy it 100, 200, 300, 400, and 500 mm/min, and force requirement to failure stem at 100, 300, and 500 mm/min velocities was measured by using instron device. the data was analyzed using a completely randomized design. the results showed that velocity had a significant effect...
watermelon is handled and stored in bulk package as some other fruits and vegetables are. package height must be so appropriately selected that bottom fruit layers will receive no damage or failure. this research was performed to determine and compare the mechanical properties of two varieties in three sizes of watermelon under static load conditions to obtain parameters used in transportation ...
Bird eggs should have high internal and external quality to maintain the economic life of the product and hence recognizing and understanding thefactors affecting egg quality have great importance. In this experiment, 18 healthy eggs were selected and then exposed to a 1.5 Tesla magnetic field. After this stage, 6 samples of them were immersed in sunflower oil and stored for two days. In ...
The present study investigates the failure resistance welding method of a similar and unmatched connection point in duplex stainless steel under shear stress conditions. In this study, 1Cr21Ni5Ti branded stainless steel duplex was used. Micro-hardness test, tensile test - cutting and optical metallography to describe the macrostructure and microstructure, hardness button welding and weld failur...
an understanding of the strength of rice grains as affected by moisture content and temperature is important for analysis and prediction of cracking and/or breakage behavior during handling and processing. further, the magnitude of these properties at various moisture contents and temperatures is needed for the accurate design of milling machinery so that grain damage is minimized. to determine...
In this paper, a finite element model is presented for the transient analysis of low velocity impact, and the impact induced damage in the composite plate subjected to low velocity impact is studied. The failure criteria suggested by Choi and Chang and the Tsai-Hill failure criteria are used for the prediction of the damage in the composite plate; then the effect of various parameters on the im...
OBJECTIVE Our aims were (a) to perform a systematic literature review of epidemiological studies that examined the interaction of force and repetition with respect to musculoskeletal disorder (MSD) risk, (b) to assess the relationship of force and repetition in fatigue failure studies of musculoskeletal tissues, and (c) to synthesize these findings. BACKGROUND Many epidemiological studies hav...
building pounding occurs between two adjacent buildings with small gap or without sufficient separation distance. it leads to damage buildings during earthquake due to impact. many researchers have investigated building pounding based on impact force reduction and energy dissipation increase, when two buildings collide with each other. in numerical investigations, using specific link element, i...
تجزیه و تحلیل گیت (gait analysis)عبارت است از تحقیق روی راه رفتن از نظر حرکت اندامها می باشد، در این بررسی می توان مواردی نظیر کنترل موقعیت، سینتیک و سینماتیک بدن ، کنترل بدن و کنترل عصبی را در نظر داشت. اینگونه تحقیقات در ارتوپدی ، بیومکانیک ورزش و عصب شناسی و کاربرد دارند. پارامترهای مهم در اینگونه تحقیقات عبارت از نیرو ، ممان ، سرعت ، مصرف انرژی و فشار کف پا می باشند. سه روش برای اندازه ...
Cavalry Transformation: Are We Shooting the Horse Too Soon? by Major Louis B. Rago, II, United States Army, 67 pages. The transformation of the Army from its current “legacy” structure to the Objective Force is predicated on the realization of significant technological advances and the evolution of a “general-purpose” combat force. Today’s forces, “Legacy Forces” in the transformation lexicon, ...
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