Python practice in Machine Design
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Beam Midpoint Sag
Estimate the elastic midpoint deflection of a simply supported conveyor beam under a central point load.
beam-bending. Free with an account.
Bolt Under Pressure
Calculate nominal von Mises stress for the supplied axial and shear stress components.
stress-strain. Free with an account.
Gear Ratio Quick Check
Check the speed ratio implied by a proposed gear-pair tooth count.
spur-gears. Free with an account.
Spring Rate Tag
Estimate a replacement spring’s elastic rate from its supplied geometry and modulus.
springs. Free with an account.
Cam Follower Lift
Calculate theoretical SHM follower displacement at a specified cam angle.
cams. Free with an account.
Lewis Tooth Bending Stress
Estimate nominal tooth-root bending stress using the supplied module-form Lewis factor.
gear-strength. Free with an account.
Shaft Minimum Diameter
Calculate a continuous torsion-only shaft diameter before catalogue and stiffness checks.
shafts-torsion. Free with an account.
Wahl Factor Check
Calculate Wahl-corrected spring wire stress from the supplied load and coil geometry.
springs. Free with an account.
Basic Bearing Life Estimate
Estimate statistical ball-bearing L10 hours at a supplied constant equivalent load.
bearings-fatigue. Free with an account.
Cantilever Root Bending Stress
Calculate nominal root bending stress from a uniform load across the full cantilever span.
beam-bending. Free with an account.
Hollow Shaft Shear Stress
Check nominal elastic torsional stress using both hollow-shaft diameters.
shafts-torsion. Free with an account.
Planetary Gear Output Speed
Calculate the carrier speed for the stated fixed-ring planetary arrangement.
gear-trains. Free with an account.
Prescribed Buckingham Dynamic Load
Estimate dynamic tooth load from pitch speed, transmitted force and aggregate deformation force in the stated metric model.
gear-strength. Free with an account.
Goodman Fatigue Reserve
Compare a constant-amplitude tensile-mean stress point with the supplied Goodman relation.
bearings-fatigue. Free with an account.
Hertz Line-Contact Pressure
Estimate idealized pitch-point contact pressure using normal tooth force, local curvature and reduced modulus.
gear-strength. Free with an account.
Ideal Fixed-Fixed Spring Surge Mode
Estimate the specified distributed spring mode from stiffness and spring mass under fixed-fixed boundary assumptions.
springs. Free with an account.
Illustrative Combined-Load Bearing Check
Apply the exercise’s prescribed load-factor branch and compare basic bearing life with an explicit target.
bearings-fatigue. Free with an account.
Cycloidal Rise, Dwell and SHM Return
Sample a degree-based cam cycle with the specified high dwell and zero-duration bottom dwell.
cams. Free with an account.
Gearbox Efficiency Chain
Compose stage ratio and efficiency products for a proposed gear train.
gear-trains. Free with an account.
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. Free with an account.