1. 材料、柔度相等的两根压杆,临界力一定相等( )

  2. 答案:错
  3. 临界力是理想压杆维持直线稳定平衡状态的最大载荷( )

  4. 答案:对
  5. 细长压杆的临界应力值与材料的弹性模量成正比。( )

  6. 答案:对
  7. 压杆的临界应力愈小,它就愈不易失稳。( )

  8. 答案:错
  9. 压杆失稳的主要原因是由于外界干扰力的影响( )

  10. 答案:错
  11. 构件受力如图,AB段产生哪些基本变形(  )

  12. 答案:弯曲、压缩组合
  13. 弯扭组合圆轴的危险点为二向应力状态。 ( )

  14. 答案:对
  15. 圆形截面梁如图所示,次梁发生的弯曲是( )

  16. 答案:平面弯曲
  17. 正方形受力杆如图所示,A点的正应力为(      )

  18. 答案:没有应力
  19. 拉伸(压缩)与弯曲的组合情形,若剪应力可以不计,在危险面的危险点处是(   )

  20. 答案:单向应力状态
  21. 过一点任意两个相互垂直平面上的正应力之和是不变( )

  22. 答案:对
  23. 在三向压应力接近相等的情况下,脆性材料和塑性材料的破坏方式(   )。
  24. 过受力构件内任一点,随着所取截面的方位不同,一般地说,各个面上的(   )。
  25. 图示两个单元体的应力状态,( )。
  26. 在单元体上,可以认为(   )。
  27. 主应力就是通过一点所有斜截面上正应力的极值,或者说是切应力为零的面上的正应力。( )
  28. 单元体最大切应力作用面上必无正应力。( )
  29. 第一、第二强度理论只适用于脆性材料。( )
  30. 在三向压应力接近相等的情况下,脆性材料和塑性材料的破坏方式都为塑性屈服。( )
  31. 梁剪切弯曲时,其横截面上(  )
  32. 大多数梁都只进行弯曲正应力强度核算,而不作剪应力核算,这是因为它们横截面上切应力与正应力相比往往是小量。( )
  33. 截面积相等,抗弯截面模量不一定相等,截面积不等,抗弯截面模量也不一定不相等。( )
  34. 梁发生平面弯曲时,其横截面绕(    )旋转。
  35. 在梁的某一段上,若无载荷q作用,则该梁段上的剪力为常数。(   )
  36. 梁在某截面处,若剪力Fs=0,则该截面的M值一定为零值。(   )
  37. 梁在集中力偶作用截面处,M图有突变,FS图无变化。(   )
  38. 分析外伸梁ABC(如图所示)的内力时,所得的结果正确的是(  )。
  39. 梁在某一段内作用有向下的分布力时,则该段内M图是一条(    )。
  40. 图示梁,C截面的剪力和弯矩值正确的是(   )
  41. 图示梁,当力偶的位置改变时,有下列结论(     )
  42. 若梁的剪力图和弯矩图分别如图(a)和(b)所示,则该图表明(    )。
  43. 平面弯曲时,梁上的外力(或外力偶)均作用在梁的(     )上。
  44. 如图所示圆轴,最大扭矩为( )。
  45. 两根实心圆轴受相同扭矩作用,轴1的直径为d1,轴2的直径为d2,且d2=2d1,则两根圆轴的最大切应力为(  )
  46. 等直空心圆轴扭转时的最大切应力发生在( )
  47. 圆轴扭转时,横截面上的切应力是( )
  48. 圆轴扭转时的切应力与(   ) 有关。
  49. 若将受扭实心圆轴的直径增加一倍,则其刚度是原来的8倍。( )
  50. 材料不同的两根受扭圆轴,其直径、长度和所受的扭矩均相同,它们的最大切应力一定相同。( )
  51. 材料不同而截面和长度相同的二圆轴,在相同外力偶作用下,其扭矩图、切应力及相对扭转角都是相同的。( )
  52. 一受扭等截面圆轴,若直径减小一半,其它条件不变,则最大切应力增大一倍。( )
  53. 在扭转外力偶矩作用处,扭矩图发生突变。( )
  54. 在正交坐标系中,设平面图形对y轴和z轴的惯性矩分别为Iy和Iz,则图形对坐标原点的极惯性矩为Ip=Iy+Iz。(   )
  55. 图形在任一点只有一对主惯性轴。( )
  56. 使用惯性矩的平行移轴定理时两根轴中必须有一根是图形的形心轴。(   )
  57. 任意图形,若对某一对正交坐标轴的惯性积为零,则这一对坐标轴一定是该图形的(   )。
  58. 图形对于其对称轴的(    )
  59. 一正方形截面梁的边长为2a,其对z轴的惯性矩IZ为(   )。
  60. 直径为20mm的实心圆轴,对形心的极惯性矩IP为(     )。
  61. 在Oyz直角坐标系中,一圆心在原点、直径为d的圆形截面图形对z轴的惯性半径为 (   )。
  62. 在平面图形的几何性质中,哪些量的值可正、可负、也可为零。(   )
  63. 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
  64. 连接件剪切变形构件采用实用计算方法的原因是计算更简化。( )
  65. 计算挤压应力时,挤压面的面积一定是实际接触面的面积。( )
  66. 挤压发生在连接件与被连接件相互挤压的局部表面,是连接件在挤压接触面上因挤压而产生松动破坏的现象。( )
  67. 下面说法哪个是不正确的( )
  68. 连接件挤压强度应力的实用计算是(  )。
  69. 连接件剪切应力的实用计算是(  )。
  70. 在校核连接件的剪切和挤压强度时,当其中有一个超过许用值时,强度就(  )。
  71. [removed]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
  72. 图示三种情况下的轴力图是相同的。( )
  73. 轴向拉压杆的任意截面上都只有均匀分布的正应力。( )
  74. ( )
  75. 下面哪个是铸铁拉伸应力应变曲线的特点(   )
  76. 关于材料的冷作硬化现象有以下四种结论,正确的是(  )
  77. 三杆结构如图所示。E1=E2=E3=E,A1=A2=A,3杆横截面为A3,今欲使杆3的轴力减小,问应采取以下哪一种措施?(  )
  78. 应力分为正应力和切应力。( )
  79. 平衡状态的弹性变形体,任意部分的内力都与外力保持平衡。( )
  80. 若物体各部分均无尺寸变化,则物体内各点的应变一定为零。( )
  81. 确定截面内力的截面法,适用于不论等截面或变截面、直杆或曲杆、基本变形或组合变形、横截面或任意截面的普遍情况。( )
  82. 根据均匀性假设,可认为材料的弹性常数在各处都相同。( )
  83. 材料力学中的内力是指因外力引起的附加内力。(  )
  84. 下列结论中错误的是:( )
  85. 关于应力,下面命题正确的是(   )
  86. 根据各向同性假设,可认为构件的下列各量中的哪个量在各个方向都相同。( )
  87. 下列四种说法,正确的是:( )
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