MechPlane

DECISION ENGINE LIBRARY

Find the mechanical question you need to resolve.

Each engine shows inputs, method, result, limitation, and next verification step. Results remain in your browser.

ENGINE LIBRARY

90 engines available

Motion and drives

Linear actuator force

Screen preliminary linear actuator force, peak power, and continuous power from load, acceleration, speed, friction, incline, and efficiency.

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Motion and drives

Acceleration torque

Calculate preliminary acceleration torque from reflected inertia, speed change, acceleration time, and steady load torque.

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Motion and drives

Motor duty screen

Screen a simple motor duty cycle against entered continuous and peak torque limits using RMS torque and peak duration.

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Motion and drives

Belt drive layout

Estimate belt ratio, belt speed, wrap angle, and approximate pitch length from pulley geometry and center distance.

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Motion and drives

Roller chain layout

Estimate roller chain ratio, driven speed, approximate chain length, and small-sprocket wrap from tooth counts, pitch, center distance, and driver speed.

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Motion and drives

Ball screw critical speed

Screen a ball-screw concept for preliminary critical-speed sensitivity from screw diameter, unsupported length, end condition factor, and operating rpm.

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Motion and drives

Screw jack torque

Estimate preliminary screw-jack input torque and friction-angle context from load, lead, mean diameter, and friction coefficient.

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Motion and drives

Flywheel inertia

Estimate preliminary flywheel inertia or speed swing from cycle energy, nominal speed, and allowable speed change.

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Motion and drives

Brake stopping energy

Estimate preliminary rotational and vertical stopping energy plus average braking power from inertia, speed, mass, height, and stop time.

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Motion and drives

Pneumatic cylinder force

Estimate theoretical pneumatic-cylinder extend and retract force, stroke volume, and per-cycle air use from bore, rod, pressure, stroke, and cycle rate.

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Shafts and joints

Shaft combined stress

Screen a solid round shaft under entered bending moment and torque, showing nominal bending, torsion, and von Mises equivalent stress.

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Shafts and joints

Shaft deflection

Estimate simple center-load shaft deflection for a declared simply supported span using load, diameter, span, and elastic modulus.

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Shafts and joints

Shaft critical speed

Screen a simple rotor for first critical-speed sensitivity from supported span, central mass, shaft diameter, modulus, and operating rpm.

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Shafts and joints

Key and keyway screen

Screen a parallel key for nominal shear and bearing stress from torque, shaft diameter, key width, height, length, and entered limits.

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Shafts and joints

Coupling selection

Compare a coupling concept against entered torque, speed, bore, angular misalignment, and catalog limits without selecting a part.

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Joints and fasteners

Eccentric bolt group

Screen a circular bolt group for direct shear and elastic moment load per governing bolt from bolt count, group radius, direct load, and moment.

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Joints and fasteners

Thread stripping screen

Estimate nominal internal and external thread shear stress from axial load, nominal diameter, engagement length, and entered allowable stresses.

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Fits and retention

Press fit retention

Screen press-fit torque and axial retention from user-entered interface pressure, diameter, engagement length, and friction.

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Fits and retention

Shrink fit assembly

Estimate ideal thermal diameter change for a shrink-fit assembly from diameter, interference, coefficient of expansion, and temperature change.

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Gears

Spur gear geometry

Calculate basic spur-gear ratio, pitch diameters, center distance, and driven speed from module, tooth counts, and driver speed.

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Springs and dynamics

Belleville stack compare

Compare a simplified Belleville-disc stack force and travel arrangement from one-disc force, one-disc travel, series count, and parallel count.

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Strength and structures

Beam reactions

Calculate simple simply-supported beam reactions from span, point-load magnitude, and point-load position.

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Strength and structures

Beam bending stress

Calculate nominal rectangular-beam bending stress from bending moment, section width, section depth, and entered allowable stress.

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Strength and structures

Beam deflection screen

Estimate simply-supported center-load beam deflection from load, span, rectangular section dimensions, and elastic modulus.

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Tolerances and manufacturing

Datum strategy planner

Structure an early datum strategy prompt around functional interface, primary locator, secondary orientation, and tertiary clocking.

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Manufacturing and DFM

Process by geometry

Structure a manufacturing-process shortlist around entered feature complexity, wall thickness, part size, and volume prompts.

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Machining and seals

Tapping speed and drill

Calculate synchronized tapping feed rate from entered spindle speed and thread pitch, with an entered tap-drill diameter reference.

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