Shear stress in cutting process

Replies

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  zaveri

  If you are talking about punching or blanking operations performed on sheet metal, then the value of the ultimate strength of the material corresponds to the shear strength genaerated, because only if the cutting force is great enough to produce that much of stress, only then will the metal be cut.
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  Ammar Aziz

  zaveri

  If you are talking about punching or blanking operations performed on sheet metal, then the value of the ultimate strength of the material corresponds to the shear strength genaerated, because only if the cutting force is great enough to produce that much of stress, only then will the metal be cut.

  is this also true for orthogonal metal cutting process.......????
• 

  zaveri

  Ammar Aziz

  is this also true for orthogonal metal cutting process.......????

  orthogonal cutting ? you mean the operations on the lathe ?
  
  well it has to be , because theoretically the stress induced by the cutting force has to be somehow greater than or equal to the ultimate strength of the material, if some dis-integration of the material (metal) is to take place.
  
  if the cutting force is lesser then the metal may not cut, but only some stress will be produced in the workpiece.
• 

  CE Designer

  Ammar Aziz

  Dear Friends, how we can determine the shear stresses generated within the workpiece due to cutting process applied on it .......... ????

  Are you looking for a formula or an explanation?
• 

  Ammar Aziz

  i m looking for stress distribution within the workpice and tool......
• 

  zaveri

  Then in that case you need to apply finite element methods. Try using ansys. But then what exactly is the process which you are dealing with. what is the shape and material of the workpiece and what kind of cutting tool are you using. also what is the material of the tool that you are using.