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1、判断题1刚体是指在力作用下不变形的物体。（）2柔索约束的约束力沿着柔索的轴线方向，指向物体。（）3若一力系的主矢为零，对某一点的主矩也为零，则该力系为平衡力系。（）4力偶对刚体的作用无法用一个力来代替，力偶同力一样，是组成力系的基本元素。力偶的三要素为力偶矩矢的大小、方向、作用点。（）5作用在刚体上的力偶可以在其作用面内任意的等效移动。（）6拉压杆轴力的大小与杆件的材料无关，与其横截面积的大小也无关。（）7低碳钢的拉伸过程中，强化阶段的特点是应力几乎不变，而应变却显著增加。（）8.材料的弹性模量E是一个常量，任何情况下都等于应力和应变的比值。(）9.大多数梁都只进行弯曲正应力强度核算，而不作弯
2、曲剪应力核算，这是因为它们横截面上只有正应力存在。（）10.如果一物体受两个力作用保持平衡时，这两个力一定是大小相等、方向相反，作用线在同一直线上。（）11.约束反力的方向总是与该约束所能限制的运动方向相同。（）12.力偶可以在其作用面内平移。（）13.研究杆件的应力与变形时，力可按力线平移定理进行移动。（）14.作用力与反作用力是一组平衡力系。（）15.圆轴扭转时，最大切应力发生在截面中心处。（）16.塑性材料的极限应力为其屈服点应力。（）17.在铰支座处，挠度和转角均等于零。（）18.同一段梁上，剪力为正，弯矩也必为正。（）选择题1.如果力 FR是 F1、F2两力的合力，用矢量方程表示为F
3、R=F1+F2，则三力大小之间的关系为（D）。A必有 FR=F1+F2B不可能有FR=F1+F2C必有 FRF1，FRF2D可能有FR F1，FRF2 2.力对点之矩取决于（C）。A、力的大小B、力的方向C、力的大小和矩心位置D、力的大小和方向3.钢筋经过冷作硬化处理后，其性能的变化是（A）。A.比例极限提高B.弹性模量降低C.延伸率提高D.强度极限提高4.图中分布力的合力的大小和对点A 之矩大小分别为（B）。A12ql，214qlB12ql，213qlCql，212qlDql，214ql5.一悬臂梁及其形截面如下图，其中C 为截面形心，该梁横截面的（C）A中性轴为z1，最大拉应力在上边缘处；
4、B中性轴为z1，最大拉应力在下边缘处；C中性轴为z0，最大拉应力在上边缘处；D中性轴为z0，最大拉应力在下边缘处；Me O y C y z1z0h/2 h/2 6.圆轴扭转变形时最大的剪应力发生在（C）。A圆心处B中性轴处C圆轴边缘D不确定。7.工程中一般是以哪个指标来区分塑性材料和脆性材料的？（D）A弹性模量B强度极限比例极限D延伸率8.为了保证结构的安全和正常工作，对构件承载能力要求是（D）A强度要求；B强度要求和刚度要求；C刚度要求和稳定性要求；D强度要求、刚度要求和稳定性要求。9.物体受力作用而发生变形，当外力去掉后又能恢复原来形状和尺寸的性质称为（）。A弹性B塑料C刚性D稳定性10.
5、二根圆截面拉杆，材料及受力均相同，两杆直径d1/d2=3,若要使二杆轴向伸长量相同，那么它们的长度比l1/l2 应为（D）。A 1 B 3 C 6 D9 11、没有明显屈服平台的塑性材料，其破坏应力取材料的（）。A比例极限pB名义屈服极限2.0C强度极限b12.刚体受三力作用而处于平衡状态，则此三力的作用线D。A必交汇于一点B必相互平行C必不在同一平面内D必位于同一平面内13、低碳钢的拉伸 曲线如图。若加载至强化阶段的C 点，然后卸载，则应力回到零值文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD
6、6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码
7、:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8
8、 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4
9、ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档
10、编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10
11、C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I
12、4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6的路径是沿（C）。A 曲线 cbao B曲线 cbf(bf oa)C 直线 ce(ce oa)D直线 cd(cdo)14.环形截面对其形心的极惯性矩为（B）A.4464dDIp;B.4432dDIp;C.4416dDIp;D 448dDIp.15.轴力最大的轴端，应力（C）。A、一定大B、一定小C、可能最大，也可能最小D、一定不会最小计算题1.图示水平梁，杆重不计。已知：P=2kN，q=2kN/m。试求支座
13、 A、B 处的约束反力。解：受力如图所示，列平衡方程00060046 360()xAxyByAyAByFFFFFqPMFFqP解得0AxFkN，2AyFkN，12ByFkN 2.图示桁架，杆 1 与杆 2 的横截面均为圆形，直径分别为 d1=30 mm 与 d2=20 mm，两杆材料相同，许用应力=160 MPa。该桁架在节点 A 处承受铅直方向的载荷F=80 kN 作用，试校核桁架的强度。c a b d e f o FAxFAyFBy文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1
14、N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G
15、7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A
16、2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1
17、T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O
18、2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J
19、8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3
20、G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6解：(1)对节点 A 受力分析，求出AB 和 AC 两杆所受的力；(2)列平衡方程00000 sin30sin4500 cos30cos450 xABACyABACFFFFFFF解得：2241.458.6313 1ACABFFkNFFkN(2)分别对两杆进行强度计算；1282.9131.8ABABACACFMPaAFMPaA所以桁架的强度足够。3.图示等直圆杆，已知外力偶矩MA=2.99kN m，MB=7.2kN m，M
21、C=4.21kNm，许用切应力 =70MPa，许用单位扭转角 =1()/m，剪切模量G=80GPa。试确定该轴的直径 d。解：AB 段扭矩：TAB=-2.99 kNm BC 段扭矩：TBC=4.21 kN m 根据强度条件maxmax3116BCPTTWd所以31667 4.BCTdmm 根据刚度条件maxmax4180132BCPTTGIGdFA B C 3004501 2 FA y x 300450FAC FAB 文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW
22、7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ
23、8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6
24、C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:
25、CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8
26、HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 Z
27、D6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编
28、码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6所以423218074 46.BCTdGmm 综上，该轴的直径74 46.dmm。4.外伸梁约束及尺寸如图：1、试求 A、B 的约束力；2、列出 AB 的剪力、弯矩方程；3、画出该梁的剪力、弯矩图。解：（1）受力如图所示，列平衡方程02002230()yByAyAByFFFqaPMFFaqa aPa解得0 5.AyFqa，2 5.ByFqa（2）在 AB段取截面将 AB截开，剪力方程为0 5().AyQ xFqxqaqx弯矩方程为2111
29、222()AyM xFxqxxqaxqx（3）该梁的剪力、弯矩图如图所示。5.已知如图所示，支架中斜杆AB 为圆截面的钢杆，直径为d=27mm，1=160MPa；水平杆 CB 为正方形截面的木杆，边长为a=90mm，2=10MPa，载荷 P50KN。校核杆 AB 和杆 BC 强度。FAyFBy文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4
30、ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档
31、编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10
32、C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I
33、4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6
34、文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A
35、10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V
36、3I4 ZD6C3G1T1N6图 8 图 9 解：（1）用截面法求轴力，如图所示。列方程0X，cos0CBABNN0Y，sin0ABPN得90.1ABNkN（拉力）75CBNkN（压力）（2）将轴力代入强度条件2157.4/4ABABNdMPa 1 29.26CBCBNaMPa 2 所以，两杆都满足强度要求。文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J
37、8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3
38、G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW
39、7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ
40、8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6
41、C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:
42、CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6文档编码:CW7O2G7A10C8 HJ8J8A2V3I4 ZD6C3G1T1N6