Electromagnetic brake

About: Electromagnetic brake is a research topic. Over the lifetime, 2200 publications have been published within this topic receiving 8158 citations. The topic is also known as: electro-mechanical brakes.

Flow Control with Local Electromagnetic Braking in Continuous Casting of Steel Slabs

Abstract: A computational fluid flow model is applied to investigate the effects of varying submerged entry nozzle (SEN) submergence depth and electromagnetic brake (EMBr) field strength on flow in the mold cavity. The three-dimensional, steady K-e model of the nozzle and liquid cavity in the mold used the magnetic induction method in FLUENT to incorporate the localized-type static EMBr field measured at a steel plant. The model was validated by comparing results with an analytical solution and with nail board and oscillation mark measurements collected at the plant. Increasing EMBr strength at a constant SEN depth is found to cause a deeper jet impingement, weaker upper recirculation zone and meniscus velocity, and a smaller meniscus wave. Increasing SEN depth without EMBr caused the same trends. Increasing SEN depth at a constant EMBr strength brought about the opposite: higher meniscus velocity, larger meniscus wave, and deeper penetration depth. Using the knowledge gained from this model, electromagnetic forces can be controlled to stabilize the fluid flow in the mold cavity and thereby minimize casting defects.

Critical torque and speed of eddy current brake with widely separated soft iron poles

Abstract: A theoretical model ss derived for eddy current disc brakes with iron pole shoes with a wide spacing. The eddy current in the disc is not a simple periodic function allowing representation by sine functions. In the high speed region, the current distribution around the polo shoe occupies a limited zone width proportional to the air gap. The theory based on this effect leads to reasonably accurate values of the critical torque and speed compared with experimental data. The predicted air gap dependency of the critical values agrees better with experimental results than Rudenberg's theory.< >

Clutches and Brakes : Design and Selection

Abstract: FRICTION MATERIALS Friction Code Wear Brake Fade Friction Materials Notation References BAND BRAKES Derivation of Equations Application Lever-Actuated Band Brake: Backstop Design Example: Design of a Backstop Notation Formula Collection References EXTERNALLY AND INTERNALLY PIVOTED SHOE BRAKES Pivoted External Drum Brakes Pivoted Internal Drum Brakes Design of Dual-Anchor Twin-Shoe Drum Brakes Dual-Anchor Twin-Shoe Drum Brake Design Examples Design of Single-Anchor Twin-Shoe Drum Brakes Single-Anchor Twin-Shoe Drum Brake Design Examples Electric Brakes Notation Formula Collection References LINEARLY ACTING EXTERNAL AND INTERNAL DRUM BRAKES Braking Torque and Moments for Centrally Pivoted External Shoes Braking Torque and Moments for Symmetrically Supported Internal Shoes Design Examples Notation Formula Collection DRY AND WET DISK BRAKES AND CLUTCHES Caliper Disk Brakes Ventilated Disk Brakes Annular Contact Disk Brakes and Clutches Design Examples Notation Formula Collection CONE BRAKES AND CLUTCHES Torque and Activation Force Folded Cone Brake Design Examples Notation Formula Collection References MAGNETIC PARTICLE, HYSTERESIS, AND EDDY-CURRENT BRAKES AND CLUTCHES Theoretical Background Magnetic Particle Brakes and Clutches Hysteresis Brakes and Clutches Eddy-Current Brakes and Clutches Notation References ACCELERATION TIME AND HEAT DISSIPATION CALCULATIONS Energy Dissipated in Braking Mechanical Energy of Representative Systems Braking and Clutching Time and Torque Clutch Torque and Acceleration Time Example 1: Grinding Wheel Example 2: Conveyor Brake Example 3: Rotary Kiln Example 4: Crane Example 5: Magnetic Particle or Hysteresis Brake Dynamometer Example 6: Tension Control Example 7: Torque and Speed Control Example 8: Soft Start Notation Formula Collection CENTRIFUGAL, ONE-WAY, AND DETENT CLUTCHES Centrifugal Clutches One-Way Clutch: The Spring Clutch Overrunning Clutches: The Roller Clutch Overrunning Clutches: The Sprag Clutch Torque Limiting Clutch: Tooth and Detent Types Torque Limiting Clutch: Friction Type Notation Formula Collection References FRICTION DRIVES WITH CLUTCH CAPABILITY Belt Drives Friction Wheel Drive Friction Cone Drive Example 1: Belt Drive, Hinged Motor Mount Example 2: Belt Drive, Sliding Motor Mount Example 3: Cone Drive Notation Formula Collection FLUID CLUTCHES AND BRAKES Fluid Couplings as Clutches Fluid Brakes: Retarders Magnetorheological Suspension Clutch and Brake Notation Formula Collection References ANTILOCK BRAKING SYSTEMS Tire/Road Friction Coefficient Mechanical Skid Detection Electrical Skid Detection: Sensors Electrical Skid Detection: Control Notation Formula Collection References BRAKE VIBRATION Brief Historical Outline Recent Experimental Data Finite Element Analysis Caliper Brake Noise Reduction References ENGINEERING STANDARDS FOR CLUTCHES AND BRAKES SAE Standards American National Standards Institute (ANSI) Other Standards Organizations BIBLIOGRAPHY INDEX