Python practice in Machine Design

Browse the rooms before signing in. Opening a room requires an account and follows your existing access. Practice does not issue certificates.

• Beam Midpoint Sag

  Estimate the elastic midpoint deflection of a simply supported conveyor beam under a central point load.

  beam-bending. Free room.

• Bolt Under Pressure

  Calculate nominal von Mises stress for the supplied axial and shear stress components.

  stress-strain. Free room.

• Gear Ratio Quick Check

  Check the speed ratio implied by a proposed gear-pair tooth count.

  spur-gears. Free room.

• Spring Rate Tag

  Estimate a replacement spring’s elastic rate from its supplied geometry and modulus.

  springs. Free room.

• Cam Follower Lift

  Calculate theoretical SHM follower displacement at a specified cam angle.

  cams. Account access required.

• Lewis Tooth Bending Stress

  Estimate nominal tooth-root bending stress using the supplied module-form Lewis factor.

  gear-strength. Account access required.

• Shaft Minimum Diameter

  Calculate a continuous torsion-only shaft diameter before catalogue and stiffness checks.

  shafts-torsion. Account access required.

• Wahl Factor Check

  Calculate Wahl-corrected spring wire stress from the supplied load and coil geometry.

  springs. Account access required.

• Basic Bearing Life Estimate

  Estimate statistical ball-bearing L10 hours at a supplied constant equivalent load.

  bearings-fatigue. Account access required.

• Cantilever Root Bending Stress

  Calculate nominal root bending stress from a uniform load across the full cantilever span.

  beam-bending. Account access required.

• Hollow Shaft Shear Stress

  Check nominal elastic torsional stress using both hollow-shaft diameters.

  shafts-torsion. Account access required.

• Planetary Gear Output Speed

  Calculate the carrier speed for the stated fixed-ring planetary arrangement.

  gear-trains. Account access required.

• Prescribed Buckingham Dynamic Load

  Estimate dynamic tooth load from pitch speed, transmitted force and aggregate deformation force in the stated metric model.

  gear-strength. Account access required.

• Goodman Fatigue Reserve

  Compare a constant-amplitude tensile-mean stress point with the supplied Goodman relation.

  bearings-fatigue. Account access required.

• Hertz Line-Contact Pressure

  Estimate idealized pitch-point contact pressure using normal tooth force, local curvature and reduced modulus.

  gear-strength. Account access required.

• Ideal Fixed-Fixed Spring Surge Mode

  Estimate the specified distributed spring mode from stiffness and spring mass under fixed-fixed boundary assumptions.

  springs. Account access required.

• Illustrative Combined-Load Bearing Check

  Apply the exercise’s prescribed load-factor branch and compare basic bearing life with an explicit target.

  bearings-fatigue. Account access required.

• Cycloidal Rise, Dwell and SHM Return

  Sample a degree-based cam cycle with the specified high dwell and zero-duration bottom dwell.

  cams. Account access required.

• Gearbox Efficiency Chain

  Compose stage ratio and efficiency products for a proposed gear train.

  gear-trains. Account access required.

• Shaft, Gear and Bearing Checks

  Complete three separate educational checks of shaft stress, tooth bending and basic bearing life using the supplied cases.

  shafts-torsion, gear-strength, bearings-fatigue. Account access required.