Interview Questions.

Q1. Mention The Various Coordinates In Fem?

Local or detail coordinates

Natural coordinates

Simple natural coordinates

Area coordinator Triangular coordinates

Generalised coordinates

Q2. Define Aspect Ratio?

Element thing ratio is described as the ratio of the most important dimension of the detail to its smallest measurement.

Q3. List Out The Advantages Of Fem?

Since the houses of each element are evaluated separately specific cloth homes can be included for each element.

There is no restrict inside the form of the medium.

Any type of boundary circumstance may be adopted.

Q4. What Are The Factors Governing The Selection Of Finite Elements?

The geometry of the frame

The range of impartial area coordinates

The nature of pressure variation anticipated

Q5. List Out The Disadvantages Of Fem?

The computational value is excessive.

The answer is approximate and numerous assessments are required.

Q6. What Are Different Types Of Elements Used In Fem?

The diverse factors utilized in FEM are classified as:

One dimensional factors(1D factors)

Two dimensional elements(2D factors)

Three dimensional factors(3-D elements)

Q7. What Are The Basic Steps In Fem?

Discretization of the structure

Selection of suitable displacement characteristic

Finding the element properties

Assembling the detail houses

Applying the boundary conditions

Solving the gadget of equations

Computing additional outcomes

Q8. What Is Meant By Plane Strain Condition?

Plane pressure is a nation of stress in which ordinary stress and shear stress directed perpendicular to the aircraft of body is believed to be zero.

Q9. What Is Meant By Finite Element Method?

Finite detail approach (FEM)is a numerical method for solving boundary price issues wherein a massive area is divided into smaller portions or elements. The answer is decided by using asuuming sure ploynomials. The small portions are referred to as finite detail and the polynomials are referred to as shape features.

Q10. What Are 3d Elements? Give Examples.

3-d factors are used for modeling strong our bodies and the diverse three-D factors are tetrahedron, hexahedron, and curved rectangular strong.

Q11. Briefly Explain A Few Terminology Used In Fem?

The various terms utilized in FEM are defined beneath:

Finite element-Small factors used for subdividing the given area tobe  analysed are known as finite elements. The factors can be 1D, 2D or 3D elements rely in at the type of shape.

Nodes and nodal points- The intersection of the special sides of factors are known as nodes. Nodes are of  kinds - outside nodes and inner nodes.

O External nodes - The nodal point connecting adjoining elements.

O Internal nodes- The extra nodes used to boom the accuracy of answer.

Nodal lines - The interface among elements are known as nodal lines.

Continuum- The area wherein be counted exists at every point is referred to as a continuum. It can be assumed as having infinite wide variety of connected debris.

Primary unknowns- The primary unknowns involved in the system of the detail properties are known as primary unknowns.

Secondary unknowns- These unknowns are derived from primary unknowns are known as secondary unknowns. In displacement formulations, displacements are treated as number one unknowns and pressure, strain, moments and shear force are dealt with as secondary unknowns.

Q12. What Are The Properties Of Shape Functions?

The properties of shape functions are:

Theno of shape functions could be same to theno of nodes present in the element.

Shape characteristic will have a unit price on the node considered and zero price at different nodes.

The sum of all the shape feature is same to @i. E. SNi =1

Q13. What Is Meant By Discretization?

Discretization is the system of subdividing the given body into a number of factors which ends up in a gadget of equivalent finite factors.

Q14. What Are Possible Locations For Nodes?

The possible places for nodes are:

Point of utility of concentrated load.

Location wherein there may be a trade in depth of hundreds

Locations where there are discontinuities inside the geometry of the structure

Interfaces among materials of different homes.

Q15. Define Displacement Function?

Displacement characteristic is described as easy features which are assumed to approximate the displacements for each element. They may additionally assumed in the form of polynomials, and trigonometric features.

Q16. Axisymmetric Elements Are Obtained By Rotatinga1-d Line About An Axis. Axisymmetric Elements Are Shown In The Figure Below?

Shape feature is likewise referred to as an approximate function or an interpolation characteristic whose cost is equal to unity on the node considered and zeros in any respect different nodes. Shape characteristic is represented with the aid of Ni wherein i =nodeno.