Question

How is it calculated for a given design in the case of static yielding (give an equation)? 3.) (5) Discuss the purpose of using a factor of safety. What parameters determine an acceptable number for it? 4.) (2) In your own words, explain the purpose of the Von Mises criterion (e.g.: what is it used to determine?). How and why is it used in design? )(1) A.) Select the 30mm ID single-row cylindrical roller bearing from the NSK catalog with the smallest OD for a design life of 10000 hours at 1800 RPM with an 1100 lb. radial load. B.) Calculate the actual $L_{10}$ life in hours of your selected bearing given the 1100 lb. load. C.) Report the probability of failure before the life calculated in part B.

          How is it calculated for a given design in the case of static yielding (give an equation)?
3.) (5) Discuss the purpose of using a factor of safety. What parameters determine an acceptable number for it?
4.) (2) In your own words, explain the purpose of the Von Mises criterion (e.g.: what is it used to determine?). How
and why is it used in design?
)(1) A.) Select the 30mm ID single-row cylindrical roller bearing from the NSK catalog with the smallest OD for a
design life of 10000 hours at 1800 RPM with an 1100 lb. radial load. B.) Calculate the actual $L_{10}$ life in hours of
your selected bearing given the 1100 lb. load. C.) Report the probability of failure before the life calculated in
part B.

How is it calculated for a given design in the case of static yielding (give an equation)?
3.) (5) Discuss the purpose of using a factor of safety. What parameters determine an acceptable number for it?
4.) (2) In your own words, explain the purpose of the Von Mises criterion (e.g.: what is it used to determine?). How
and why is it used in design?
)(1) A.) Select the 30mm ID single-row cylindrical roller bearing from the NSK catalog with the smallest OD for a
design life of 10000 hours at 1800 RPM with an 1100 lb. radial load. B.) Calculate the actual L10 life in hours of
your selected bearing given the 1100 lb. load. C.) Report the probability of failure before the life calculated in
part B.

Added by Guillermo L.

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