渐近法网上作业答案

渐近法网上作业答案一、11.251105536.5118.559.5A123M图(单位mkN)解：32,64,36,8/1,2/1,8/3221321FAFAFAAAAMMM，分配过程如下：00杆端弯矩分配传递固端弯矩分配系数1A-59.5-27.5110118.511082.536-36.527.555551/23/8A1A31/82AA23A-32-64-192M图见上图。二、(a)(b)qDABC2m2m1.5m3m50/159910/1591360/159470/53M图解：AB553,AC3053,AD1853MADF=10kN·m-MACF=MCAF=203kN·m分配传递过程如下ADABACCABA5/5330/531/818/53分配系数固端弯矩分配传递杆端弯矩10-20/320/3-60/53-50/159-100/53-50/159470/53-50/159-1360/159-50/53910/159-50/159画出结构的M图如图b。三、2m4m8m3m3m90kN80kN30kN/m0.751.5IABCDIIBABCCB040606.,.,.,CD04.,MABF80kNm,MMBAFBCF40160kNmkNm,,MMCBFCDF16090kNmkNm,；分配传递过程：ABCD0.40.60.60.4-8040-90160分配系数固端弯矩分配传递48-160722436-42.4-63.6-31.812.719.16.49.6-5.8-3.8杆端弯矩-49.6100.7-100.7136.2-136.2M图如下。49.653.37120100.7136.2240121.5551.9120M图（kN·m）四、AGFE10kN1/4结构利用对称性取四分之一结构计算FEFGFA02505.,.；MMFGFGFF10kNm；分配、传递略；半结构M图如下。2.5512.57.52.52.557.52.5M图（kN·m）