中国大学mooc结构力学作业答案查询-k8凯发

k8凯发-凯发官网入口文学习题 正文

week 1

assignment 1

1、the number of redundant restraints of the system is ( ).
    a、1
    b、2
    c、3
    d、4

2、the geometric construction of the system as the figure shown is ( ).
    a、a stable system with no redundant restraints
    b、a stable system with redundant restraints
    c、an unstable system which can deform randomly
    d、an instantaneously unstable system

3、the geometric construction of the system as the figure shown is ( ).
    a、a stable system with no redundant restraints
    b、a stable system with redundant restraints
    c、an unstable system which can deform randomly
    d、an instantaneously unstable system

4、the hinge a can move in vertical direction in the system as the figure shown, which means that the length of member ab and ac can change but keeping in equal. the position of other joints can’t be changed. if the structure is a stable system, which of the following is correct. ( )
    a、h2 m
    b、h4 m
    c、h4 m or h
    d、h2 m and h

5、the geometric construction of the system as the figure shown is ( ).
    a、a stable system with no redundant restraints
    b、a stable system with redundant restraints
    c、an unstable system which can deform randomly
    d、an instantaneously unstable system

6、the geometric construction of the system as the figure shown is ( ).
    a、a stable system with no redundant restraints
    b、a stable system with redundant restraints
    c、an unstable system which can deform randomly
    d、an instantaneously unstable system

7、the geometric construction of the system as the figure shown is ( ).
    a、a stable system with no redundant restraints
    b、a stable system with redundant restraints
    c、an unstable system which can deform randomly
    d、an instantaneously unstable system

8、the geometric construction of the system as the figure shown is ( ).
    a、geometrically unstable system which can deform randomly
    b、geometrically stable system with no redundant restraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant restraints

9、the system shown in the figure is ( ).
    a、constantly changeable system
    b、geometrically stable system without redundant constraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant constraints

10、the system shown in the figure is ( ).
    a、constantly changeable system
    b、geometrically stable system without redundant constraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant constraints

11、the system shown in the figure is ( ).
    a、constantly changeable system
    b、geometrically stable system without redundant constraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant constraints

12、the system shown in the figure is ( ).
    a、constantly changeable system
    b、geometrically stable system without redundant constraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant constraints

13、the system shown in the figure is ( ).
    a、constantly changeable system
    b、geometrically stable system without redundant constraints
    c、geometrically instantaneously unstable system
    d、geometrically stable system with redundant constraints

14、if the degree of computational freedom of the planar system w>0, it is impossible to be a geometrically stable system.

15、if the calculation degree of freedom of the planar system w < 0, it must be a statically indeterminate structure.

16、the three rigid body are connected by three hinges and two to form a geometrically stable system without redundant constraints.

17、geometrically instantaneously unstable system becomes a geometrically stable system after instantaneous motion, so it can be used as a structure.

18、the two links connecting the two rigid body can be equivalently replaced by a virtual hinge.

19、several simple composition rules for geometrically stable systems can be summarized as one of the most basic rules: the basic triangle rule.

20、as shown in the figure, the degree of computational freedom of the system is ( ).

21、as shown in the figure, the degree of computational freedom of the system is ( ).

week 2

assignment 2

1、
    a、
    b、
    c、
    d、

2、
    a、
    b、
    c、
    d、

3、the bending moment diagram for the non-load section of a straight rod is a straight line.

4、in any straight rod without shear force, the bending moment of each section is zero.

5、the bending moment diagram of a statically determinate beam shown in figure (a) is shown in figure (b).

6、whether the following sketch of the bending moment diagram is correct or not?

7、whether the bending moment diagram of the following structure is correct or not ?

8、the cantilever beam shown in figure (a) is subjected to distributed loads. its bending moment diagram is constructed by superposition method. the beam can be divided into two sections shown in figure (b). the bending moment diagram can be drawn separately and then connect them.

9、

10、

week 5-6

assignment 3

1、
    a、
    b、
    c、
    d、

2、
    a、
    b、
    c、
    d、

3、
    a、
    b、
    c、
    d、

4、
    a、
    b、
    c、
    d、

5、
    a、
    b、
    c、
    d、

6、
    a、
    b、
    c、
    d、

7、
    a、
    b、
    c、
    d、

8、

9、

10、

11、

12、

13、

14、

15、

week 6-7

assignment 4

1、
    a、
    b、
    c、
    d、

2、

3、

4、

5、

6、

7、

8、

9、

10、

11、

12、

assignment 5

1、
    a、
    b、
    c、
    d、

2、
    a、
    b、
    c、
    d、

3、
    a、
    b、
    c、
    d、

4、

5、

assignment 6

1、
    a、
    b、
    c、
    d、

2、

3、

4、

5、

6、

7、

week 8-9

assignment 7

1、
    a、
    b、
    c、
    d、

2、

3、

4、

week 11

assignment 8

1、
    a、
    b、
    c、
    d、

2、

3、

4、

5、

assignment 9

1、
    a、
    b、
    c、
    d、

2、

3、

4、

5、

week 12

assignment 10

1、
    a、
    b、
    c、
    d、

2、

3、

4、

5、

week 14

assignment 11

1、
    a、
    b、
    c、
    d、

2、
    a、
    b、
    c、
    d、

3、
    a、
    b、
    c、
    d、

4、

5、

6、

structural mechanics final exam

final exam

1、download the test paper and send back the answered paper in time.