Replies to this message

Re: Shaft Diameter Calculations
Re: Shaft Diameter Calculations -- mikee122	Post Reply	Top of thread	Forum

Posted by: bobthedog ® 04/29/2007, 12:46:41

Hey just wondered are u doing the ics engineering course To proceed mike Torque is measured in kjoules 1000 joules equal one killer joule Loading 4 what does that mean 4 what Also is with that steel 4140 TS AND YS is YS YIELD STRENGTH WHAT IS TS ??? Got about 4 equations for u but wanted to find that out ok cheers. DONT GIVE UP THE FAITH

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: Shaft Diameter Calculations
Re: Re: Shaft Diameter Calculations -- bobthedog	Post Reply	Top of thread	Forum

Posted by: bobthedog ® 04/29/2007, 13:03:59

Torque is also measured in oz aswell sorry onces Can u help with this how to work out 1/16 of an inch and 3/16 of an inch on a calculator etc how its put onto the calculator and to do Also m2 is meteres squared but m 3 is meters cubed where on the calculator is meters cubed button thanks DONT GIVE UP THE FAITH

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

Re: Shaft Diameter Calculations
Re: Shaft Diameter Calculations -- mikee122	Post Reply	Top of thread	Forum

Posted by: materialboy ® 04/28/2007, 07:21:34

The diameter is with in ur values. Torque = radius * perpendicular force F where Loading gets to be the perpendicular force because it is the shaft. What value is loading of 4 ??? r = Torque/ Force F

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: Shaft Diameter Calculations
Re: Re: Shaft Diameter Calculations -- materialboy	Post Reply	Top of thread	Forum

Posted by: mikee122 ® 04/28/2007, 11:44:12

Could you please clarify. I am trying to determine the diameter. I don't have a diameter value In r=Torque/Force would not the Torque be equal to the perpendicular loading? I am referencing a chart that states that shows the loading value based on the type of loading. Manner of loading Design factor Design shear stress T sub d= s sub y/2N Static or steady torsion 2 T sub d= s sub y/4 repeated torsion 4 T sub d= s sub y/8 torsion impact or shock 6 T sub d= s sub y/12 T=50,000 Loading = 4 Shaft length = 20 foot Max AOT = 10 degrees I did make a minor change to the material I would like to use. I plan on using 4140 Steel,OQT 700 (US 231 ksi/1593 MPa, YS 212 ksi/1462 MPa)

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: Re: Shaft Diameter Calculations
Re: Re: Re: Shaft Diameter Calculations -- mikee122	Post Reply	Top of thread	Forum

Posted by: materialboy ® 04/29/2007, 11:43:49

How far I understand, Torque = Radius*Prependicular Force So, in your question, Force will be created by perpendicular loading. Hence, if your loading is acting prependiculary than yes it will replace perpendicular force. Manner of loading Design factor Design shear stress T sub d= s sub y/2N ??? What does your [s sub y/2N] stands for ???

Post Reply Tell a Friend (must be logged in) Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: Re: Re: Shaft Diameter Calculations
Re: Re: Re: Re: Shaft Diameter Calculations -- materialboy	Post Reply	Top of thread	Forum

Posted by: mikee122 ® 04/29/2007, 15:58:43 Author Profile eMail author Edit

I am doing a strength of materials course fir Mech. Design. Our text book is Strength of Materials, 4th edition by Robert L Mott The table is Manner of loading | Design factor | Design shear stress | | T sub d= s sub y/2N Static or steady | 2 | T sub d= s sub y/4 torsion | | repeated torsion | 4 | T sub d= s sub y/8 torsion impact | 6 | T sub d= s sub y/12 shock _ T=50,000 lb-ft Loading = 4 Shaft length = 20 foot Max Angle Of Twist = 10 degrees I plan on using 4140 Steel,OQT 700 (US 231 ksi/1593 MPa, YS 212 ksi/1462 MPa) US = Ultimate Strength , YS = Yield Strength T sub d= s sub y/2N is the formula for Design shear stress. In the formula (Torque = Radius*Prependicular Force) Would Radius=50,000lb-ft/4(the design factor of 4)???

Alert Admin About Post

Where am I? Original Top of thread

| |

Re: Re: Re: Re: Re: Shaft Diameter Calculations
Re: Re: Re: Re: Re: Shaft Diameter Calculations -- mikee122	Post Reply	Top of thread	Forum

Posted by: materialboy ® 04/30/2007, 06:56:12 Author Profile

Well if you understand the meaning of MPa and stress, u won't ask on the prependicular. Ur answer is with in the statement u have just written.

Where am I? Original Top of thread