美国麻省理工大学：《结构分析与设计技术》教学资源（讲义）CQ4

Concept Question For the potato-shaped body given in class to explain the concept of stress, the field of stress vectors t(n)=t(n)(x)on the plane of normal n given by its cartesian components(1,0, 0) known and its cartesian components are given by the expression t1=(10MPa)x2;t=0;t3=0 This information is enough to determine o a) the complete state of stress at point x e b) all the stress components on any other plane passing through point x e) none of the stress components on any plane, including the plane of normal n Statement a Statement b 345 Statement c) None of the above statements DKDU

++++ ++++ ++++ ++++ ++++ Concept Question ++++ ++++ ++++ ++++ ++++ For the potato-shaped body given in class to explain the concept of stress, the field of stress vectors t(n) = t(n) (x) on the plane of normal n given by its cartesian components (1, 0, 0) is known and its cartesian components are given by the expression: t1 = (10 MPa)x2; t2 = 0; t3 = 0 This information is enough to determine: • a) the complete state of stress at point x • b) all the stress components on any other plane passing through point x, • c) none of the stress components on any plane, including the plane of normal n. 1. ++++ Statement a) 2. ++++ Statement b) 3. ++++ Statement c) 4. ++++ None of the above statements 5. ++++ DKDU

answer The correct answer to the concept question is 4. None of the above statements

++++ ++++ ++++ ++++ ++++ Answer ++++ ++++ ++++ ++++ ++++ The correct answer to the concept question is: 4. ++++ None of the above statements