In Mohr-Coulomb failure criterion, failure occurs when the ______ is achieved and not when the maximum shear stress is achieved.
举一反三
- When the soil reaches the limit equilibrium state, the location of shear failure surface must be on the maximum shear stress surface（ ）
- According to Maximum Principal Stress theory (also known as Rankine's theory of failure), elastic failure occurs ( ) A: when the minor principal stress is equal to the elastic limits value in a simple tension test B: when the greatest principal stress reaches the elastic limit value in simple tension test C: when the greatest principal stress is equal to the stress corresponding to the upper yield limit in a tension test D: none of the above
- The failure modes of foundation include general shear failure, local shear failure and punching shear failure（ ）
- It is recommended to turn back to the departure field immediately when the engine failure occurs just after takeoff.
- When a single channel failure occurs, the operational channel of DFCS can still provide automatic control of the aircraft.