Need of Mechanical engineering and engineers

Applications of Mechanical Engineering and engineers

Mechanical engineers are involved in the design and construction of various pieces of equipment like aircrafts, spacecrafts, and automobiles, stationary structures like building and bridges and industrial machinery. Due to the fact that mechanical engineers have to deal with a wide range of issues relating to different fields during the course of their work, the mechanical engineering program is prepared to provide them with the basic knowledge of different areas of study.

Just as chemical engineers strive to make different chemical processes cost-effective, mechanical engineers also strive to make the production and maintenance of different machines economical and efficient. Mechanical engineers also have to deal with one additional issue. The machines designed and manufactured by these mechanical engineers will be used by general community who do not have any knowledge about their operation. Hence, they will have to consider the safety and durability factors of these machines also while designing them.

Areas of Study Of Mechanical Engineering

The main areas of study that mechanical engineering looks into are:

• Design
  • Drafting and analysis – For this purpose it uses design softwares like Pro-E, Catia, Ansys and AutoCAD.
  • Design of various mechanisms – In this purpose, the kinematics and dynamics of a mechanism are taken into account and a proper design is drafted for the mechanism.

• Manufacture
  • Solid Mechanics
  • Strength of Materials

• Statics and Dynamics
• Heat-related Studies
  • Thermodynamics
  • Heat Transfer
  • Energy Conversion
  • Refrigeration and Air Conditioning
• Fluid Mechanics, Hydraulics and Pneumatics
• Instrumentation and Measurement

Mechanical engineering is finding more and more applications these days in other areas of engineering also. The most significant of these is the field of robotics. Robotics has become an important area of study due to the fact that more and more processes are getting automated these days. Mechanical engineers are handed the task of manufacturing assembly lines of robots for different operations and controlling them through pre-written programs to make the process of manufacture less human dependant, and more efficient and economical.

Kinematics of machinery

It is of 2 parts.
1.kinematics of machinery
2.dynamics of machinery

Fluid Mechanics and Hydraulic machines

Fluids include liquids and gases.
Fluid mechanics is the study of how fluids move and the forces on them.
Fluid mechanics is that branch of physics which deals with the properties of fluid,namely liquid and gases,and their interaction with forces.

some

Heat Transfer

Heat transfer is the passage of thermal energy from a hot to a colder body. When a physical body, e.g. an object or fluid, is at a different temperature than its surroundings or another body, transfer of thermal energy, also known as heat transfer, or heat exchange, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one, a result of the second law of thermodynamics. Where there is a temperature difference between objects in proximity, heat transfer between them can never be stopped; it can only be slowed down.

Strength of materials

The strength of a material refers to the material's ability to resist an applied force.
The term strength of materials most often refers to various methods of calculating stresses in structural members, such as beams, columns and shafts, when the equations of equilibrium are not sufficient to solve the problem.


basic terms:
Stress terms
Strength terms
Strain(deformation) terms
Stress-strain relations
Design terms

Subjects

subjects for a mechanical engineer are of 3 groups
1.design
2.production
3.thermal

1.Design:
Design is for designing machine elements. It is different for different materials.Designing forces is the first part in design. Subjects deal with designing forces are mechanics,solid mechanics,fluid mechanics,machine theory.
Machine parts are designed by using forces.Here we design bearings,shafts.......
machine design is the subject.

2.Production:
Production is for producing elements according to the design which is made by designers.
Subjects are poduction technology,instrumentation,metrology,machine tools...

3.Thermal:
here the subjects are thermal related. Thermal engineering,heat transfer,power plant engineering,refrigeration,air conditioning...........

Need of Mechanical engineers

from the past 100 years mechanicals are ruling the world.
Persons who are ruling world are ruling because of mechanicals.For this no need to give examples.Though there are some companies without mechanicals,majority are mechanicals.
You can live with out computer,you cant without power.

Now mechanicals are playing an important role in Power plants.
there several options for mechanicals in higher studies.