CTR K

Design Workflows

Common design tasks — the right tools, in the order you use them

Not sure which tools chain together? Each workflow below walks a typical mechanical design from start to finish. Carry a result from one step into the next — save each calc and bundle them into one calculation package.

Gear drive design

Size the mesh, then carry the forces through the shaft, bearings and coupling.

  1. 1Cylindrical GearsRate the mesh (ISO 6336) and get the tangential force Fₜ.
  2. 2Shaft AnalysisApply Fₜ as the shaft load → deflection, fatigue, critical speed.
  3. 3Bearing AnalysisUse the shaft reactions to pick bearings and check L10 life.
  4. 4Shaft CouplingsSelect a coupling for the transmitted torque + misalignment.
  5. 5Thermal AnalysisCheck heat balance / expansion at the operating speed.

Rotating assembly & critical speed

From shaft geometry to whirl, resonance and balancing.

  1. 1Shaft AnalysisStiffness, stress and first critical (whirl) speed.
  2. 2Bearing AnalysisSupport stiffness + life under the rotor loads.
  3. 3Rotor DynamicsCritical speeds + Campbell diagram for the assembly.
  4. 4Vibration AnalysisForced response, isolation and resonance margins.
  5. 5Flywheel & InertiaInertia / energy storage and burst-speed check.

Bolted steel structure

Section selection through joint and weld verification under fatigue.

  1. 1Steel SectionsSection properties + EC3 unity checks.
  2. 2Beam DeflectionBending, shear and deflection of the member.
  3. 3Column BucklingEuler / Johnson stability of compression members.
  4. 4Bolted JointsVDI 2230 preload, torque and fatigue safety.
  5. 5Weld DesignFillet/butt weld strength under combined load.
  6. 6Fatigue AnalysisLife under the cyclic loading (S-N / Goodman).

Pressure piping system

Flow, standard pipe selection, stress and the equipment it serves.

  1. 1Pipe FlowPressure drop + velocity (Darcy–Weisbach).
  2. 2DN / Piping StandardsPick the standard pipe OD / wall / schedule.
  3. 3Pipe StressWall thickness + thermal-expansion stress (B31.3).
  4. 4Pressure VesselsMAWP / wall thickness for the vessel (ASME VIII).
  5. 5Pump & Fan SelectionMatch the duty point to the system head.

Hydraulic power unit

Actuator force through accumulator, pump and line sizing.

  1. 1Hydraulic CylindersForce, speed and buckling for the actuator.
  2. 2Hydraulic AccumulatorSize the accumulator + gas pre-charge.
  3. 3Pump & Fan SelectionFlow/pressure duty for the power unit.
  4. 4Pipe FlowLine pressure drop at the design flow.

Motor-driven conveyor

Belt sizing through the drive train to the motor.

  1. 1Conveyor BeltCapacity, belt tensions and drive power (ISO 5048).
  2. 2Belt & PulleySize the drive belt for the required power.
  3. 3Motor Sizing & VFDFrame, torque and energy with a VFD.
  4. 4Wire Rope & LiftingIf lifting is involved — rope safety factor + life.
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