Showing posts with the label Mechanical

The Benefits of BIM for structural engineers

Construction of houses and monuments has been the traditional fancy apart from being the fundamental need of the humanity since stages of civilization. Humans have ventured to produce some really great and iconic monuments that are still boasted of structural facets and intricate finesse. In fact, the pursuits to build bigger and better have been intrinsic to our desire patterns and we continue with that. The modern societies with characteristically high demographic loads and consequent demand have gone for multistoried buildings and skyscrapers in the prime metro regions. Structural engineering has proved to be the much needed escort throughout the evolution of construction sector which has adored some frontline concepts like BIM or ‘Building Information Modeling’ to catalyze the process and serve the resonant demands successfully. Information processing has been the defining facet of the 21 st century! We began its storage and subsequent analytics helped us to get bett

List of 8 Beneficial Changes made in the Standard of Fire Pumps over the Years

Standards governing the design of fire pumps are updated every few years. This is done to ensure that these address the new design challenges and overcome the shortcomings of previous designs. In this light it would be quite interesting to look back over the last 10 years and gauge the important changes that have happened in these standards. A close analysis will reveal that the designs have significantly evolved for the better; these now ensure superior performance and safety. Here we will look back and see some of the major changes in the standard of fire pumps and their resulting benefits. 1. Torsion analysis for right angle gear drives For vertical shaft pumps that are right angle gear driven, a torsion analysis is mandatory. This helps to identify and eliminate any damaging stresses or liner resonant frequencies created from the operating speed range of the rotating equipment. This will help avoid any potential damage to the pump equipment. 2. The right diese

Why to Study Mechanical Engineering???

Sluggish economy and slow pacing market hardly hits the job industry.  The number of jobs opportunities growing is getting scarce, in such a crunch the decision of which career to choose and which course to enroll in becomes really important questions to ponder over. In stronger market scenarios, the jobs pertaining to each discipline as in mass communication, arts and other subjects get generated in ample. Professionals taking up studies in these disciplines easily find relevant jobs matching their areas of skills and expertise but the fall in the job market graph affects severely. Many professionals pursue jobs which are in no way related to their profiles. Few works in call centers and few keep on exploring job sites to get their career started. In recent survey it has been revealed that around 20% of UK students will be leaving their Universities with no immediate future job prospects. The question of basic economics is th

Spring Battery

LATEST MECHANICAL ENGINEERING INNOVATION People have been looking for ways to extend the life of a battery, be it a AAA, AA or even the D-size. What we have here is the ONE=TWO Spring Battery. The design is quite self explanatory.The spring basically extracts every little bit of juice form the battery!

Who Invented Thermodynamics?

Biography of Sadi Carno t: (An inspiration for every mechanical engineering student) The applications of the laws of thermodynamics has led to the discovery of important machines like automobile, ships, airplanes , refrigerator, air-conditioner, etc. A young man, Nicholas Leonard Sadi Carnot of 36 years of age is considered to be the father of thermodynamics. It is emotional for many of us to know that inventor of an important field of thermodynamics was a boyish scientist who died at the young age of a mere 36 years. Sadi Carnot is a shining example for the young generation for it was his hard work and inventions which has lead to the design, developments and manufacture of present day automobiles. Personally, when I remember the contributions of this boy, I get goosebumps. Had he lived little longer, I’m sure he would have been involved in many greater inventions. Though lots of research has been carried out in the field of thermodynamics, the works of Sadi Carnot are considered

Worlds Smallest Petrol Engine

Scientists have created the smallest petrol engine in the world ( less than a centimeter long not even half an inch ), small enough to power a watch or any small gadget. The mini-motor, which runs for two years on a single squirt of lighter fuel, is set to revolutionize world technology. It generates 700 times more energy than a conventional battery. It could be used to operate laptops and mobile phones for months doing away with the need for charging. Experts believe it could be phasing out batteries in such items within just six years. The engine, minute enough to be balanced on a fingertip, has been produced by engineers at the University of Birmingham.

Recirculating Ball Screw

This type of power screw is used for high  speed high efficiency applications, and is  becoming more common. It has become  popular because it is essential in CNC, as well as robots and aircraft actuators. The ball screw assembly is as shown below and includes a circular shaped groove cut in a helix on the shaft. The ball nut also includes an internal circular shaped groove which matches the shaft groove. The nut is retained in position on the shaft by balls moving within the groove. When the nut rotates relative to the shaft the balls move in one direction along the groove supporting any axial load. When the balls reach one end of the nut they are directed back to the other end via ball guides. The balls are therefore being continuously recirculated. The recirculated ball screw has the following advantages and disadvantages to the conventional threaded power screws:  Advantages: 1.High Efficiency - Over 90% 2.Predictable life expectancy 3.Precise and repeatable mo


A clutch is a mechanical device that provides for the transmission of power (and therefore usually motion) from one component (the driving member) to another (the driven member) when engaged, but can be disengaged. Clutches are used whenever the transmission of power or motion needs to be controlled either in amount or over time (e.g., electric screwdrivers limit how much torque is transm itted through use of a clutch; clutches control whether automobiles transmit engine power to the wheels). In the simplest application, clutches are employed in devices which have two rotating shafts (drive shaft or line shaft). In these devices, one shaft is typically attached to a motor or other power unit (the driving member) while the other shaft (the driven member) provides output power for work to be done. In a torque-controlled drill, for instance, one shaft is driven by a motor and the other drives a drill chuck. The clutch connects the two shafts so that they may be locked together and s


Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of some objects on the surface of water, even though they are denser than water, and in the ability of some insects (e.g. water striders) to run on the water surface. This property is caused by cohesion of similar molecules,  and is responsible for many of the behaviors of liquids. Surface tension has the dimension of force per unit length, or of energy per unit area. The two are equivalent—but when referring to energy per unit of area, people use the term surface energy—which is a more general term in the sense that it applies also to solids and not just liquids.The cohesive forces among liquid molecules are responsible for the phenomenon of surface tension. In the bulk of the liquid, each molecule is pulled equally in every direction by neighboring liquid molecules, resulting in a net force of zero.

Student's omnidirectional sphere- wheeled electric motorcycle

Thanks to gyros, accelero meters  and sophisticated control  mechanisms, remaining upright on  a two-wheeled vehicle is no longer  quite the balancing act it might  once have been, even when at a  standstill. Visions of future mobility  like Honda's U3-X take such ideas  in whole new directions, quite  literally, by including multi- directional capabilities, and  concepts such as Supple go even  further still by ditching wheels  altogether in favor of balls. It's this  freedom of movement that inspired  a group of students from the  Charles W Davidson College Of  Engineering at San Jose State  University to begin work on the  ambitious Spherical Drive System  (SDS) electric motorcycle. The SDS concept vehicle is described as a self-balancing electric motorcycle that rides on spheres. Rather than using the kind of mechanical gyros that help keep the Gyrobike or the C-1 from Lit Motors in an upright position, the SDS creation uses data from MEMS gyroscopic sensor technol

Wörthersee e-bike

Next week Audi will debut their prototype Wörthersee e-bike, which promises to be a highly advanced, versatile electric bike from the German automakers. The Audi e-bike will be unveiled at Wörthersee in Carinthia, Austria where trial biker Julien Dupont and downhill specialist Petra Bernhard will demonstrate their stunts and streetbike skills. “As a high-performance e-bike for sports and trick cyc ling, it features the Audi core competences of design, ultra, e-tron and connect,” stated Audi’s Head of Design Wolfgang Egger. weighs 24 pounds and features a compact frame made of carbon fiber-reinforced polymer with a low center of gravity to make it superbly agile. The same carbon fiber-reinforced polymer is also used for the 26″ wheels which feature an innovative “Audi ultra blade” design with broad flat spokes for an optimized transmission of pedal power. The 2.3 kW electric motor sends up to 184 lb-ft. of torque to the rear wheel and uses a lithium-ion battery that only need

what's Mechanical engineering ? ? ?

Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the production and usage of heat and mechanical power for the design, production, and operation of machine s and tools. It is one of the oldest and broadest engineering disciplines. The engineering field requires an understanding of core concepts including mechanics, kinematics, thermodynamics, materials science, and structural analysis. Mechanical engineers use these core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices and more. Mechanical engineering emerged as a field during the industrial revolution in Europe in the 1

Awesome engineering

Awesome work done by mechanical engineers.The Real Grass-roots Innovation by Indian wins Best Product Design!This winning product was made at a minuscule cost of Rs. 300 and has potential to affect lives of millions of people across the globe.  Project Goal:“Load carrier for labor” project aims to improve the working condition of laborers and wo rkers at many places globally like construction site, factories, ports, railway stations, etc.Objective:  The objective is to prevent various occupational hazards and demonstrating Product design and ergonomic consideration in welfare of human life.This is called Real Engineering..

- - - >>Mechanical Engineers ! ! !

maximum mechanical engineers and the mechanical students are having the innovative thinking and has an extraordinary talent to prove themselves in any kind of fields that they are well interested   What it takes to be a Mechanical Engineering?What it takes to be a Mech. Engg.?We entered the college with lot of dreams,With the first day, came the first shock: NO GIRLS.With this we started the great journey.First half of first year passed getting acquainted;Getting out of school mentality, exploring the campus;Second half entangled in daughters, t-squares, set square, sheets;Eventually ended  by rewriting the drawing rules.Third was the semester of great transformation;Mastering the art of copying assignments,Getting famous for infamous acts;No matter lost only few marks.Then came the fourth semester,The of tech fests, seminars;We were the hearth of all the events;And were rated best till date.Fire began from fifth semester;Suddenly the class was rated the worst ever,And rebels

DRDO syllabus for Mechanical Branch

DRDO-SET SYLLABUS Mechanical Engineering – ME Engineering Mechanics: Free body diagrams and equilibrium; trusses and frames; virtual work; kinematics and dynamics of particles and of rigid bodies in plane motion, including impulse and momentum (linear and angular) and energy formulations; impact. Strength of Materials: Stress and strain, stress-strain relationship and elastic constants, Mohr’s circle for plane stress and plane strain, thin cylinders; shear force and bending moment diagrams; bending and shear stresses; deflection of beams; torsion of circular shafts; Euler’s theory of columns; strain energy methods; thermal stresses. Theory of Machines: Displacement, velocity and acceleration analysis of plane mechanisms; dynamic analysis of slider-crank mechanism; gear trains; flywheels. Vibrations: Free and forced vibration of single degree of freedom systems; effect of damping; vibration isolation; resonance, critical speeds of shafts. Design: Design for static and dynamic loading; f

Mechanical Engineering Kinematics Project

ME 553 (Kinematics) Final Project. A 6 legged walker driven by an electric screwdriver. The goal was to create a four bar linkage and demonstrate it's motion with a hand crank. We went above and beyond the rubric by adding 5 other legs and a motor. It didn't need to turn, it didn't need to be efficient, it just had to demonstrate we did the calculations and analysis of the path of the outer most point of the linkage.

JNTU MECH 4-2 (2012) Mid 2 Online Bits

Download JNTU MECH 4-2 (2012)  Mid Online Bits in PDF Subscribe to feed through email,not to miss any updates. Download    JNTU MECH 4-2 (2012)    second Mid Online Bits subject wise 1.  AIM 2.  NT 3.  PPC * We are not responsible of any conseqences

JNTU MECH 3-2 (2012) second Mid Online Bits

Download JNTU MECH 3-2 (2012) second Mid Online Bits in PDF Subscribe to feed through email,not to miss any updates. Download JNTU MECH 3-2 (2012) second Mid Online Bits subject wise 1.  MSE 2.  TE-II 3.  CAD/CAM 4.  DMM-II 5.  IM 6. R&RC * We are not responsible of any conseqences


Download JNTU MECH 3-2 (2012) second Mid Online Bits in PDF Subscribe to feed through email,not to miss any updates. Download JNTU MECH 3-2 (2012) second Mid Online Bits subject wise 1. MSE 2. TE-II 3. CAD/CAM 4. DMM-II 5. IM * We are not responsible of any conseqences


Download JNTU MECH 4-1 (2012)  Mid Online Bits in PDF Subscribe to feed through email,not to miss any updates. Download  JNTU MECH 4-1 (2012)    second Mid Online Bits subject wise 1.  AIM 2. NT 3. PPC * We are not responsible of any conseqences