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  1. 3 points

    Version

    6,975 downloads

    ANSYS offers engineering simulation solution sets in engineering simulation that a design process requires. Companies in a wide variety of industries use ANSYS software. The tools put a virtual product through a rigorous testing procedure (such as crashing a car into a brick wall, or running for several years on a tarmac road) before it becomes a physical object. This pdf gives good start to understand and learn ANSYS
  2. 2 points
    Selection of material is an important aspect for manufacturing industries . The quality of product is highly depends upon its material properties. These properties are used to distinguish materials from each other. For Example: A harder material is used to make tools.A ductile material is used to draw wires. So the knowledge of mechanical properties of material is desirable for any mechanical student or for any person belongs to mechanical industries. This post brings top 18 mechanical properties. Mechanical properties of material: There are mainly two types of materials. First one is metal and other one is non metals. Metals are classified into two types : Ferrous metals and Non-ferrous metals. Ferrous metals mainly consist iron with comparatively small addition of other materials. It includes iron and its alloy such as cast iron, steel, HSS etc. Ferrous metals are widely used in mechanical industries for its various advantages. Nonferrous metals contain little or no iron. It includes aluminum, magnesium, copper, zinc etc. Most Mechanical properties are associated with metals. These are #1. Strength: The ability of material to withstand load without failure is known as strength. If a material can bear more load, it means it has more strength. Strength of any material mainly depends on type of loading and deformation before fracture. According to loading types, strength can be classified into three types. a. Tensile strength: b. Compressive strength: 3. Shear strength: According to the deformation before fracture, strength can be classified into three types. a. Elastic strength: b. Yield strength: c. Ultimate strength: #2. Homogeneity: If a material has same properties throughout its geometry, known as homogeneous material and the property is known as homogeneity. It is an ideal situation but practically no material is homogeneous. #3. Isotropy: A material which has same elastic properties along its all loading direction known as isotropic material. #4. Anisotropy: A material which exhibits different elastic properties in different loading direction known as an-isotropic material. #5. Elasticity: If a material regain its original dimension after removal of load, it is known as elastic material and the property by virtue of which it regains its original shape is known as elasticity. Every material possess some elasticity. It is measure as the ratio of stress to strain under elastic limit. #6. Plasticity: The ability of material to undergo some degree of permanent deformation without failure after removal of load is known as plasticity. This property is used for shaping material by metal working. It is mainly depends on temperature and elastic strength of material. #7. Ductility: Ductility is a property by virtue of which metal can be drawn into wires. It can also define as a property which permits permanent deformation before fracture under tensile loading. The amount of permanent deformation (measure in percentage elongation) decides either the material is ductile or not. Percentage elongation = (Final Gauge Length – Original Gauge Length )*100/ Original Gauge Length If the percentage elongation is greater than 5% in a gauge length 50 mm, the material is ductile and if it less than 5% it is not. #8. Brittleness: Brittleness is a property by virtue of which, a material will fail under loading without significant change in dimension. Glass and cast iron are well known brittle materials. #9. Stiffness: The ability of material to resist elastic deformation or deflection during loading, known as stiffness. A material which offers small change in dimension during loading is more stiffer. For example steel is stiffer than aluminum. #10. Hardness: The property of a material to resist penetration is known as hardness. It is an ability to resist scratching, abrasion or cutting. It is also define as an ability to resist fracture under point loading. #11. Toughness: Toughness is defined as an ability to withstand with plastic or elastic deformation without failure. It is defined as the amount of energy absorbed before actual fracture. #12. Malleability: A property by virtue of which a metal can flatten into thin sheets, known as malleability. It is also define as a property which permits plastic deformation under compression loading. #13. Machinability: A property by virtue of which a material can be cut easily. #14. Damping: The ability of metal to dissipate the energy of vibration or cyclic stress is called damping. Cast iron has good damping property, that’s why most of machines body made by cast iron. #15. Creep: The slow and progressive change in dimension of a material under influence of its safe working stress for long time is known as creep. Creep is mainly depend on time and temperature. The maximum amount of stress under which a material withstand during infinite time is known as creep strength. #16. Resilience: The amount of energy absorb under elastic limit during loading is called resilience. The maximum amount of the energy absorb under elastic limit is called proof resilience. #17. Fatigue Strength: The failure of a work piece under cyclic load or repeated load below its ultimate limit is known as fatigue. The maximum amount of cyclic load which a work piece can bear for infinite number of cycle is called fatigue strength. Fatigue strength is also depend on work piece shape, geometry, surface finish etc. #18. Embrittlement: The loss of ductility of a metal caused by physical or chemical changes, which make it brittle, is called embrittlement.
  3. 1 point
    Hi everyone, I am an electrical enginner with very little knowledge about the usage of gears and how to calculate the torque and gear ratio, so I am looking for help here. I have the following problem at work. A long circular tube (3 meters) is placed vertically and inside it about 30 cm from the top openning there is a half of a disc attached to a metal rode. I want to rotate the semicircle precisely with a stepper motor, the idea is to have a gear placed at the shaft of the motor, which rotates a bigger gear, which the semicircle is attached to by a rode. The picture I uploaded illustrates the setup of the motor and gears I want to use. Just try to imagine a rode being attached to the bigger gear and at the end of the rode there is a semicircle. Now the real question, the semicircle with the rode weigh about 500 grams, I have no idea how to choose the right torque for the motor and how to calculate the number of teeth and size of the gears I want to use to be able to rotate the object. Thanks in advance
  4. 1 point
    Gaurav Jani

    Books required

    Hope it will help..... UPDATED mechanical all subjects ebooks-1.pdf
  5. 1 point
    Kabilan Kamaraj

    Official Web Address

    Hi, Hello friends, https://kabilmech.wordpress.com This is my offical website. I have atatched a pdf which contails all mechanical bookds please take a overview and plesae like and leave yoyur comment in my likned in page.. Thank you Best Regards.
  6. 1 point
    super bro....thank you so much
  7. 1 point
    Wow thanks mate!
  8. 1 point
    Kabilan Kamaraj

    Books required

    hi, Its ok...anyway thank you for your valuable reply... Best regards.
  9. 1 point
    Esat Aykurt

    CAD CAM ENGINEER

    Hi friends, I am a SolidCAM training expert and thecnical support engineer. I know intermediate level post prosses. I can help you about SolidWorks and SolidCAM software.
  10. 1 point
    rshirsagar5

    CAD CAM ENGINEER

    Which Are The Top Websites That Every Mechanical Engineer Should Know ? Please let me know.
  11. 1 point
    One of the best guider i saw
  12. 1 point
    Bhupinder.singh003

    want to learn cad cam

    Go to you tube and learn solidworks
  13. 1 point
    Chanu

    Catia 3D Design

    Version 1.1

    5,118 downloads

  14. 1 point
    New features... coming soon... keep watching.... 1 Clubs - Where you can start your own club... 2 New forum look keep watching....
  15. 1 point
    I want this document in PDF for frequent use
  16. 1 point
    What useful information are obtained from tensile test of ductile material You can answer this question. You can like the best answer. You can share the question You can get updates of new questions on Facebook linkedin twitter & google plus
  17. 1 point
    The purpose for a governor on at CI engine is the same as the purpose for a governor on any machine: to maintain constant speed under varying load conditions. DrD
  18. 1 point
    There are 3 reasons for this point. "Why Tractors have vertical exhaust in the front" 1. Design level reason : Tractor is made of 2 piece construction. The rear portion (with the rear axle and drive line) can be seperated from the front portion (with engine, transmission). Hence, the silencer and exhaust tail pipe has to be kept along with the front part of the tractor. If the exhaust was to be facing the ground, then the hot gas will blow on the Driver's legs and will cause uncomfort for the user. Hence, the exhaust gas is sent vertically upward. 2. Functional level reason : If Silencer has to be placed facing the rear, (as in car), then the silencer has to be kept at the bottom. If the exhaust tail pipe is kept at a lower level, the fast blowing exhaust gas will lift up the loose sand in the crop field, now, this has multiple negative impacts 2.1. Top layer of any crop field is the fertile sand, which will get blown-off if tractor silencer is fitted like in cars. If this is allowed, every time, tractor is used, the crop field will loose its fertile sand and ultimately will become barren land. 2.2. Another effect, is these blown-off loose sand, will fall and settle on the crops, forming a layer which will cover the crop and thus stopping the Photosynthesis process of the crops. So the crop yield will be badly affected 3. Yes, keeping the silencer and tail pipe at the bottom will have other packaging issue, where, due to the articulation in crop fields, there is every chance of the silencer getting damaged due to ground hits. By the way , I m in Automobile Service Industry for the last 12 years.
  19. 1 point
    The car requires aesthetic look so you cant fit an exhaust in front of the car and it disturbs the view of the driver but in tractor aesthetic is not much worried compared to performance and the exhaust wont disturb much the view of the driver
  20. 1 point
    ABS- it allows the brakes to be applied while maintaining a tractive contact with the road. it does not allow the wheels to be stopped a once. if it was stopped at once due to inertia(because of the speed with which it comes), the vehicles skids. it is more prominent in low friction surfaces like on ice, wet road etc. In ABS the wheels are not stopped at once. It grips the disc mounted on the wheel. the disc is pressed and released with a gap of nanoseconds. thus the driver do not actually feel it. It increases the braking distance. EBD- It is an electronic device that is mounted on the vehicle, that actually varies the amount of braking force on each wheel depending upon the road conditions. if one wheel is on a high friction surface less braking force is required on that wheel. thus by sensing the road conditions the amount of brake force is varied.
  21. 1 point
    The main goal of using Antilock breaking system is to the wheels of car from skidding.and it also avoid the wear of tyre.where as EBD controls the braking on wheels
  22. 1 point
    Difference between first angle and third angle method of projection: 1) In First angle method Object is assumed to be placed in First quadrant whereas in third angle method of projection, Object is assumed to be placed in third quadrant. 2) In First angle method Object lies between the projection screen and observer whereas in third angle method of projection, projection screen lies between the object and observer. 3) As a result, In First angle method, View from left is projected on right side and view from right is projected on left side.In third angle method, View from left is projected on left side and view from right is projected on right side. Detailed Explaination is shown in Image... I think that First angle method is a better practice and as a result it is mostly preferred. ( Projection screen lies rear to the object). The symbol of first and third angle projections itself explains their significance. Symbol of first and third angle method of projection indicates a frustum of cone which is led horizontally on the surface. In case of first angle method of projection, left view of frustum of cone is displayed on right side and in case of first angle method of projection, left view of frustum of cone is displayed on left side. For more details, please visit:
  23. 1 point
    Drafting is essentially drawing a picture, whether in 2D or 3D, and providing dimensions and notes. A drafter may do some "catalog engineering," (selecting parts such as bearings, seals, etc. from a catalog), but drafters do not use any truly advanced mathematics (as a rule). Design, on the other hand, may be making a sketch, but it is also providing the analysis to justify the selection of component sizes (based on stress, deflection, fatigue, etc.), determination of system dynamic response and assuring that criteria are met, etc. Design goes much, much further than drafting.
  24. 1 point
    Esmeraldo Nogoy Pineda Design is the application of Engineering principles while drafting is the representation of design as in a drawing as the basis for production, construction, or even in manufacturing processes
  25. 1 point
    clutch is a device use to engage or disengage the shaft of the gearbox to the shaft of wheel, while coupling is used to joint two shaft permanantely or temporary,...
  26. 1 point
    hello everyone here are some of the topics i have collected throughout my engineering hope it will help some one. * Advances In Capillary Fluid Modelling * Hybrid Motorcycles* * Machine Vision * Crew Exploration Vechicles * ACC-Plus(Adaptive Crusie Control+) System * Micro/Meso-scale Manufacturing * Turbines in silicon * Self-Healing Polymer Technology * Hybrid Synergy Drive (HSD) * Launching Space Vechicles from Moon * Pseudoelasticity and Shape Memory in Metal Nanowires * Quantum Chromo Dynamics * MEMS In Industrial Automation * Fluid Energy Milling * Snake Well Drill * Infrared Thermography * Shock Waves & Shock Diamonds * Camless engine with elctromechanical valve actuator * Aircraft Egress * Molecular Engineering * Cordless Tools * Free Form Modelling Based on N-Sided Surfaces * Functional Nanocrystalline Ceramics * Frictionless Compressor Technology * Kalina cycle * Programmable keyless entry * Micromanipulating Micromachine * Infrared Curing And Convection Curing * Ball Piston machines * Autonomous Submarines * Automated Highways * Pint Sized Power Plants * Abrasive Blast Cleaning * Air Powered Cars * Magnetic Nanocoposites * Electrochemical Machining (ECM) & EBM~ * Space Robotics * Rijke Tube * Electromagnetic Bomb * Cell Integration Into A Manufacturing System~ * Plasma Arc welding * Trends in welding * Hydrogen Vehicle~ * New Rolling Techniques * Valvetronic Engine Technology * FMS (Flexible Manufacturing Systems) * Latest in hitech petrol fuel injection --GDI (Gasoline direct Injection) * Underwater wind mill * Microfluidics * Aircraft Propeller~ * Micromixers * Nono Fluidics * Electronic Road Pricing System~ * Micro Heat Exchangers * Low inertia dics clutches * Electronbeam Machining~ * nanobatteries * Micro hydraulics * Virtual Reality~ * Touch trigger probes * Solid carbide end mills * Ocean Thermal Energy(12) * DARK ROOM machining * Green Manufacturing * Modeling and simulation * Lean Burn Spark Ignition Engine(13) * Logistics and supply chain management * Machine tools vibration, Noise & condition monitoring * Ergonomics * Safety Systems Nuclear Power Potential as Major Energy Source Energy Conversion and Management Active Electrically Controlled Suspension Special materials for high temperature applications Camless engine with elctromechanical valve actuator Perpetual Motion Machines Recent Trends in Quality Management New trends in Automobile Design Advanced Cooling Systems Fuels from Plastic Wastes Composite materials Geo-Thermal Energy Engineering Applications of Nylon 66 Intelligent manufacturing Variable Valve Timing In I.C. Engines Agile manufacturing * Responsive manufacturing Air Cushion Vehicles Human Artificial organs Advances in cutting tool technology Electric Automobiles High speed Railway coaches Hydraulic railway recovery systems Drive-By Wire Systems Pendolina system for railway passenger comfort Safety features of railway rolling stock Hyperplane Fuel Cell Airplane Selective Catalytic Reduction Skid Steer Loader And Multiterrain Loader Control Of Point Of Operation Hazards Air Powered Cars CVT Pneumatics Control Systems Computer Aided Process Planning (Capp) Green Engine Sensotronic Brake Control Space Robotics F1 Track Design And Safety Thermal Barrier Coatings Biomechatronic Hand Total Productive Maintenance Design, Analysis, Fabrication And Testing Of A Composite Leaf Spring HANS Cryogenic Grinding Hydro Drive Explosive Welding Frictionless Compressor Technology PS: If you want any information on any of above topics please don't contact me as i don't have it but you can always google it . so happy "GOOGLING" :D