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Let be the distance from the considered contact point N of roll with coating till the vertical line which passes through axis of roll and the maximum contact point A . Then sediment of coating in the considered contact point M is presented by formula analogous to the formula (4), but with the substitution a to and hn1 to x : 2 2R( h n x) we shall find 2 x hn (5) 2R Differentiating (5) by time t and taking into consideration that d( R ) d dt dt we shall obtain dx (6) dt R We shall put this expression into (2), and find: m HR (7) Necessary force P , pressing the roll to the coating is determined as a sum of contact reinforcement under the roll: a P bd . (8) Where b is the width of thin border of roll. Taking into consideration (7) in (8) for this force we shall find the expression: a P ba m . (9) 2HR This formula at this compressed force of roll P , determines the length a of contact of roll with coating. Knowing this quantity, from (4), according to ratio: 2 a h h . (10) n 0 n 1 2R Sediment on the next n on numbers of rolling is found. From formula (10) it results that the most quantity a of section length of contact corresponds to the most compression of coating. From (9) we have mHR 2vP a 1 1 2 . (11) bHR m According to this formula the least velocity corresponds to most quantity a . We shall get from (9) the limit value of maximum quantity a , when 0 max P amax . (12) b And then in accordance with the ratio (3) and (4) we shall get the joint of coating sediment for maximum quantity: 2 2 amax P hmax . (13) 2 2 2R 2Rb m At greater value of velocity , emitting the first item of the right of formula (9) we shall get b b P a 2 h . (14) 2HR H Whence we shall get m 6
PH h . (15) b Hence it results that the increase of rolling velocity influences negatively on the process of coating compression. In general case at mean velocity quantity v of the rolling with coating roll, the joint of sediment h 2 a is determined as h where quantity a is given by formula (11). Let’s determine the strength of 2R roll on coating. Knowledge of this quantity allows determining the necessary power expenditures for the process of restoration of inside surface of bush. The quantity of strength swinging on ground is characterized by moment M , which is determined by formula M b a 0 d Taking into consideration the formula (7), we shall find b m 2 b 2 M a a . (16) 2 3HR M The force of friction swinging F will be R b m 2 b 2 F a a . (17) 2 2R 3HR Putting the expression (11) into (16) and (17) we shall get the formula of moment dependences and force of friction swinging from velocity and rolling. Let’s imagine these dependences in stretch quantities. We shall put these stretch quantities as follows; a P M a ; q ; m ; 2 R bR m bR m (18) u H m then (16) and (17) will be: 1 2 1 m a ua 3 ; 2 3 (19) 1 a 1 2uq 1 u These formulas reflect the dependence of strength on swinging roll, on rolling surface of coating from rolling velocity. At given quantity of angular velocity of rotation of roll rolling arrangement the number of passage ways with rolls of each section of raised dust coating in unity of time, is: 1 3 3v v . T 2 2R Then the general sediment or the compression of given coating section in time t after the beginning of rolling process will be taking into account that the joint of sediment where h n n k 1 h h n t . Then th . Here taking into account that h n h from the previous quantity of sediment does not depend 2 a h and a is given by formula 2R 7
Page 1 and 2: ESTONIAN MARITIME ACADEMY LATVIAN M
Page 3 and 4: CONTENTS Rasim Cavad Bashirov, Maha
Page 5: Figure 2. Calculation scheme of tas
Page 9 and 10: INVESTIGATION OF THE TECHNICAL COND
Page 11 and 12: Frequency f 2 is caused with the sh
Page 13 and 14: u U n 0 U i max * sin( i t i ) i
Page 15 and 16: MONITORING OF BEARING UNITS OF THE
Page 17 and 18: F mr A A A m1 F m mr m1 F 0,
Page 19 and 20: Figure 3. Distribution of magnetic
Page 21 and 22: DEVELOPMENT OF THE MARITIME SELF-CO
Page 23 and 24: 1. Characterization of the European
Page 25 and 26: the ecological point of view. The s
Page 27 and 28: 3. Guardini, R. Išganytojai: mitai
Page 29 and 30: Training curriculum and pedagogical
Page 31 and 32: It is indicated [21] that “On the
Page 33 and 34: STCW compliance 2012 The Internatio
Page 35 and 36: 6. Garrison, D. R. Understanding Di
Page 37 and 38: These words constitute internationa
Page 39 and 40: Greek -logy (reason, word, speech,
Page 41 and 42: SHOULD COMPETENT SEAFARER BE EDUCAT
Page 43 and 44: Cargo handling and stowage at the m
Page 45 and 46: A holder of vocational school educa
Page 47 and 48: Level 5 Level 6 Level 7 Level 8 Com
Page 49: Hydrology, Vol. 191, Issue 1, 1997,

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