Mechanical Engineering Quiz # 38

The steady state problems are those which are independent of _______ .

Time

Temperature

Pressure

All of the above

Based on which parameter an polynomial function can be chosen______________

Nodes

Nodal points

Nodal displacements

Elements

The truss element can resist only

Axial force

Surface force

Point load

None

The truss element can deform only in the

Axial direction

Vertical direction

Horizontal directional

Inclined direction

What is the full form of FEA

Fracture Element Analysis

Finite Element Analysis

Future Electronic Analysis

None of the above

From the following, which type of element is not two dimensional?

Tetrahedron

Quadrilateral

Parallelogram

Rectangle

For truss analysis, which type of elements is used?

Triangle

Parallelogram

Rectangle

Bar

To solve the FEM problem, it subdivides a large problem into smaller, simpler parts that are called

Static elements

Dynamic elements

Infinite elements

Finite elements

The art of subdividing the structure into a convenient number of smaller elements is known as

Discretization

Assemblage

Continuum

Traction

The sum of the shape function is equal to

0.5

1

2

A triangular plane stress element has how many degrees of freedom?

3

4

5

6

Number of displacement polynomials used for an element depends on .

Nature of element

Type of an element

Degrees of freedom

Nodes

On gathering stiffness and loads, the system of equations is given by

KQ=F

KQ≠F

K=QF

K≠QF

The finite element method is mostly used in the field of

Structural mechanics

Classical mechanics

Applied mechanics

Engineering mechanics

In FEA, the sub domains are called as .

Particles

Molecules

Elements

None

The numbers of node for 1 D element are

1

2

3

Example of 2-D Element is .

Bar

Triangle

Hexahedron

Tetrahedron

For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed is having an order of

2*2

3*3

4*4

6*6

To find the nodal displacements in all parts of the element, are used.

Shape function

Node function

Element function

Coordinate function

How many nodes are there in a 3-D brick element?

3

6

8

9

From below, choose the condition for the axisymmetric element.

Symmetric about axis

Boundary conditions are symmetric about an axis

Loading conditions are symmetric about an axis

All the above

Axis-Symmetric element is Element

1D

2D

3D

4D

Is/are the phase/s of finite element method

Pre-processing

Solution

Post Processing

None

The minimum number of dimensions are required to define the position of a point in space .

3

4

1

2

The finite element methods can be applied in ---------areas.

Thermal

Soil and rock mechanics

Vibration

All of the above

If the structure is more complex in order to simplify the model, we need to subdivide the structure into substructures. These substructures are termed as .

Elements

Modules

Links

Models

Which of the following is not a method for calculation of the stiffness matrix?

The minimum potential energy principle

Galerkin's principle

Weighted residual method

Inverse matrix method

Is defined as the ratio of the largest dimension of the element to the smallest dimension.

Element depth ratio

Mode shape ratio

Aspect ratio

None of the above

Are used to express the geometry or shape of the element

Mode shapes

Shape functions

Natural curves

None of the above

When a thin plate is subjected to loading in its own plane only, the condition is called _

Plane stress

Plane strain

Zero stress

Zero strain