機(jī)械專業(yè)外文文獻(xiàn)翻譯-外文翻譯--龍門式起重機(jī)金屬材料的疲勞強(qiáng)度預(yù)測(cè)

附錄of of a 4, 20107, 998; 9 998to a of A in in at a an of of is of of a of be by of of of in as in of in in at to a 2 000 of at of to to of of a at in a to of A so A of is 9/$一1999 S 1 3 5 0一6307(98) 00041一7A of be of if of is of a of a on to on of of is to be a to of a is on k=1.4 of is is be as of of of 3to is by an on of to be of in be in in in in 18 of it is g(t) as of is as to of an It be to of to is to of of is we as on of (t) by q(t) is of a A is of . , 00,000 m3 =10%, of by , 60,000 m3 ,. of of as of be as of As a of a be by 1.5 .5 of of as is a of of it is to it is to as of a be by a a t) m3 ;一3 5 of a a it is to of of to of of 1to a as 2 is of a of In of ，a -(t), of of or of a ，th is as (t)=Pt . -(t) is et v(t) be of a t. In of a t is a it is of of As of v to on of t) of a on of 4) of of m,. ,., . of 5 % of a 2,719 20 to of to a a of As in in 1 of is to by of of to of in of 一70 5 of in of ). in of 5 of in to to to of to on of of a At it of is of is by of of is be to an to is to in is of a s on an of a in of s in of s. of a of to of in s, in in of up to -2 s an a is of in as in of of a by .6 s, of of so of 3a it is of in of mm In of is of a of at as , of a of of a to a to to 1)6 of an is At to a is a is to to on in of of a of be of is of an 2 of to 1) of 1), (2) of 7), (3) ). of by of . be of to of of of of of is of 24 6. of be of so it is of or if is it is of k a . On be by ,. of a of of to If of a of 23,096 50 of k as of by of is by 3, .in of 4, he of of 920 a 50 of of S 一 l=41 is is by to by to 4, as an of S 一 l=th e d -N 4, o=5·106 m=4.5 m=5.5 of it is to as as of to we of 56of we . 7. It is is . an of a is 19, it is of in is .5 , 11.5 , . of of is is in 2. be of to of of of of in 1) of in of 2) of a 3) of 4) of by in a to . An to 2. 3rd 1970.2 . 987;9:119.3 V(i. 1991 (4 D 50of of (1990 (5 6:1041.6 A. 997;26:郵編 620107 ，俄收到1998年4月3日;接受1998年9月29日摘要內(nèi)在的疲勞曲線應(yīng)用到龍門式起重機(jī)金屬材料的疲勞壽命預(yù)測(cè)問(wèn)題。起重機(jī)，用于在森林工業(yè)中，在伐木林場(chǎng)對(duì)各種不同的工作條件進(jìn)行研究，并且做出相應(yīng)的應(yīng)變測(cè)量。對(duì)載重的循環(huán)周期進(jìn)行計(jì)算，下雨循環(huán)計(jì)數(shù)技術(shù)得到了使用。在一年內(nèi)這些起重機(jī)運(yùn)作的樣本被觀察為了得到運(yùn)作周期的平均數(shù)。疲勞失效分析表明，一些元件的故障是自 的，并且不 被一些 的 。1999年 v 科 。 。起重機(jī);疲勞 ;觀測(cè)龍門式起重機(jī)£62¥在運(yùn)作金屬元件疲勞失效。§起疲勞故障“«起重機(jī)的，并且 · 到¶年。這種起重機(jī)在森林工業(yè)的伐木林場(chǎng)被使用，用”» ¿的 木 木到´的¯， 一¨載30¸的 。 這種的起重機(jī)1000 工作在俄 森林工業(yè)的 業(yè)中。起重機(jī)壽命的問(wèn)題 的 被 式 到 ，預(yù)測(cè) 疲勞 ¿，并Æ ª， 起重機(jī)的壽命。غ 的林場(chǎng) 了一 被æ¨在غ 的林場(chǎng) 62¥， 這 起重機(jī) 應(yīng) 伐木 ø，并且”運(yùn)木的¯，這條´ß ø。這些 的æ¨ 是為了這 ” 點(diǎn)在起重機(jī)的跨¿范圍 內(nèi)。一 起重機(jī)示 圖顯示在圖1中 。 13509 /元，看到前面的問(wèn)題。 1999年