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DESIGN OF BELL CRANK LEVER

Posted on 15-09-2021  by admin

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Creators. A bell-crank lever consists of a long arm, 8 1 2 in. Long, and a short
arm 4 in. Long, at right angles to each other. Calculate the force to be applied
at right angles to the end of the long arm to overcome a resistance of 40 lbf
acting at 30° to the vertical of the short arm. Video Lecture on Problem on Bell
Crank Lever from Design of Cotter Joint, Knuckle Joint,Levers and Offset Links
Chapter of Design of Machine for Mechanical. Abstract - Bell Crank Lever is
important components from safety point of view since they are subjected to large
amount of stresses. Hence to study the stress pattern in bell crank lever,
analytical, numerical and photoelasticity methods are used. For analysis purpose
virtual model of bell crank lever is prepared.

 * Suspension Bell Crank
 * Bell Crank Design
 * Bell Crank Mechanism


WHAT IS A LEVER?

A lever is a rigid bar that pivots about a fulcrum. It transmits an input motion
and force, (the effort) through the lever pivoting on a fulcrum to a resistance
force called a load.


LOAD

The load is anything that is being moved by a lever.


EFFORT FORCE

The effort force is the energy applied to a lever to move a load.


FULCRUM

The fulcrum is the point at which the lever pivots. A lever may rest on a
fulcrum or it may swivel on an axle, e.g. a see-saw (class 1 lever) and a wheel
barrow (class 2 lever).


CLASSES OF LEVER

There are three classes of levers. Each class of lever has the load and effort
force in specific positions relative to the fulcrum.


SUSPENSION BELL CRANK


CLASS 1 LEVER

A Class 1 lever has the fulcrum between the load and the effort force.


CLASS 2 LEVER


BELL CRANK DESIGN

A Class 2 lever has the load between the fulcrum and the effort force.


CLASS 3 LEVER

A Class 3 has the effort force between the load and the fulcrum.


BELL CRANK LEVER

A bell crank lever is an angled Class 1 lever. It is a Class 1 lever because the
fulcrum is between the load and the effort force.

The bell crank lever is used when the effort force must be at an angle, usually
a right angle, to the load.


CANTILEVER

A cantilever is a beam that is fixed at one end only. Load is applied to the
unsupported end.

A cantilever may be classified as a type of Class 1 lever as fulcrum is between
the effort force and the load.


BELL CRANK MECHANISM

 1.  Fornace, L.V.: Weight Reduction Techniques Applied to Formula SAE Vehicle
     Design: An Investigation in Topology Optimization (2006)Google Scholar
 2.  Muhammad Sahail, B. Zainol Abidin.: Design and Development of a Bell Crank
     for Monoshock Front Suspension for Formula Varsity Race Car. Melaka,
     universiti teknikal malaysia melakaGoogle Scholar
 3.  Borg, L.T., West, R.L., Ferris, J.B., Member, C., Merkle, M.A.: C.Member
     Borg_L_ETD_Copy_07-26-2009.pdf (2009)Google Scholar
 4.  Dange, M.M.M., Zaveri, S. R., Khamankar, S.D.: International Journal on
     Recent and Innovation Trends in Computing and Communication Stress Analysis
     of Bell Crank Lever (2014)Google Scholar
 5.  Zende, S.R., Shaikh, M.R., Dolas, D.R.: International Journal of Modern
     Trends in Engineering and Research Fillet Radius Optimization of Bell Crank
     Lever (1947)Google Scholar
 6.  Patel, R.C., Sikh, S.S., Rajput, H.G.: Machine Design (1992–93)Google
     Scholar
 7.  Chan, W.H., Chan, A.H.S.: Strength and reversibility of movement
     stereotypes for lever control and circular display. Int. J. Ind. Ergon. 37,
     233–244 (2007)Google Scholar
 8.  Allegrucci, L., Amura, M., Bagnoli, F., Bemabei, M.: Fatigue fracture of a
     aircraft canopy lever reverse. Eng. Fail. Anal. 16, 391–401 (2009)Google
     Scholar
 9.  Liu, Y.: Recent innovations in vehicle suspension systems. Recent Pat.
     Mech. Eng. 1, 206–210 (2008)Google Scholar
 10. Gyllenskog, J.D.: Fatigue life analysis of T-38 aileron lever using a
     continuum damage approach. All Graduate Theses and Dissertations
     (2010)Google Scholar
 11. Jouaneh, M., Yang, R.: Modeling of flexure-hinge type lever mechanisms.
     Precis. Eng. 27(4), 407–418 (2003)Google Scholar
 12. Bos van den P.: Design of a Formula Student Race Car Spring-Damper System.
     Eindhoven, Technische Universiteit (2010)Google Scholar
 13. Emey, T., Chrysler, D.: Combination of topology and topography optimization
     for sheet metal structures. Altair Eng. Ger. AIAA 2000-4946Google Scholar






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