20xx年電大建筑力學(xué)形成性考核答案1----4冊(cè)-wenkub
2022-10-24 13:28:40 本頁面
【正文】 than 25,000 feet (7,620 meters). cause there 。ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。s 21 win. Michel Platini, president of European football39。s antiracism taskforce, is in London for the Football Association39。 解： （ 1）計(jì)算固端彎矩和約束彎矩 結(jié)點(diǎn) B處的剛臂的約束力矩： （ 2） 計(jì)算分配系數(shù)： （ 3） 計(jì)算分配彎矩： （ 4） 計(jì)算傳遞彎矩 1111 1 2 144( 6 6 6) 2231 2 1 108 0( 90 6 6)32PEI EIEI EI? ? ? ? ? ? ? ?? ? ? ? ? ? ?1 ( )X kN? ? ?2210 0 6 758810 0 6 758830 4 60880FABFBAFBCFCBFlM k N mFlM k N mqlM k N mM k N m?? ? ? ? ? ? ??? ? ? ??? ? ? ? ? ? ???75 60 15FFB B A B CM M M k N m? ? ? ? ? ?24463333442 3893 42 3 2 317 173 4 3 4BA BABC BCBA BCEI EISiEI EISiEI EIEI EI EI EI??? ? ? ?? ? ? ?? ? ? ???8 1 2 0151 7 1 79 1 3 5151 7 1 7BABCM k N mM k N m??? ? ? ? ? ?? ? ? ? ? ?0 . 5 0B A B CCC??120 ( )17 170CABCCBMM? ? ? ? ??專業(yè)好文檔 （ 5）計(jì)算各桿的桿端彎矩， 繪制彎矩圖： 1335171155171155170FCA B A B A BFB A B A B AFB C B C B CFCCB CB CBM M MM M MM M MM M M??? ? ? ?? ? ?? ? ? ?? ? ?專業(yè)好文檔 If we don39。 m(內(nèi)側(cè)受拉 ) MCA＝ 80kN 解： 專業(yè)好文檔 解： 專業(yè)好文檔
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