图示交变应力的循环特征r、平均应力σm、应力幅度σα分别为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/ee44ea63da7c42e4ae1a41e3e6625e6e.png
举一反三
- 在图示交应力曲线情况下,其平均应力、应力幅和循环特征正确的是( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/e2ed1d5afd014d95b791759992bf6616.png
- 图示交变应力的循环特征r、平均应力σm、应力幅度σa分别为()。 A: A B: B C: C D: D
- 在对称循环的交弯应力作用下,构件的持久极限为( )。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/5e3cddf9e66643319bf5ff705bc3861b.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/ee22a4a0f41b4cdba536aa142d522b47.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/c75dd41c5a4242c78b0846e38ac11a4a.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/689e0f4d28a044c2839b35cd76770a3b.png" />
- 图示单元体应力状态,沿x方向的线应变εx可表示为( )。 <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/9fdd7efe625f4047bb61ef38f5aea871.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/5da2d36f7ef84cbc8396b1e27b775bf4.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/164a3d85fdb6462696d83d62b92b2435.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/9e37e58e1c12442e8e018c0af637dfdf.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/41fd81417e5f47bea1db35fed7c2c44e.png" />
- 图示交变应力循环特征γ,应力幅σa和平均应力σm分别为。