Index · by discipline
Disciplines
Every skill sits in one discipline, the way a real engineering org splits the work.
MDMechanism dynamics7 sheets
- Torque balance of a hinged panel under tilt and base accelerationYou will be able to compute the true worst-case gravity and inertia torque on a hinged panel for a vehicle that is tilted, accelerating, braking and pitching, and explain why the level-ground number is not the design number.
- Terrain and track excitation: getting the vibration input rightYou will be able to identify the frequencies that will actually shake a mechanism on a tracked vehicle, and stop representing terrain as a single peak g.
- Latch and lock design that survives vibrationYou will be able to design a hold-open and hold-closed device that does not release, does not rattle, and does not depend on a gas spring for safety.
- Impact energy and the human in the swept volumeYou will be able to compute what happens if the panel closes uncommanded, size an energy absorber, and design so the answer is survivable even when everything else has failed.
- The lumped-parameter model you build before you open CADYou will be able to build a defensible dynamic model of a mechanism in a day, know which terms to keep, and know when the model is lying.
- Bracketing a numerical result with hand calculationsYou will be able to decide whether to believe a finite element or simulation result, using two calculations done on paper, and recognise the specific ways in which a wrong answer looks right.
- Design reviews and FMEA for a mechanism that can kill someoneYou will be able to run SDR, PDR and CDR so they find problems instead of documenting them, and build an FMEA that changes the design rather than filling a folder.
NDNonlinear dynamics7 sheets
- Deciding whether nonlinearity actually mattersYou will be able to tell from a test whether a structure is behaving nonlinearly, and know that once it does, the frequency response function on your screen describes nothing.
- Reading a backbone curveYou will be able to use the amplitude-dependent resonance of a structure as a design tool rather than as a nuisance, and predict which way a real joint will move it.
- Choosing between a tuned mass damper and a nonlinear energy sinkYou will be able to decide, with numbers, whether a classical tuned absorber or a nonlinear one is right for your problem, and state honestly what each will do when reality differs from the design assumption.
- Early warning of an impending transitionYou will be able to monitor a system for the signature that precedes a sudden transition, and know both what the signature means and where it fails.
- Designing for the rare event, not the average oneYou will be able to estimate how often the response will exceed a level far outside your measured data, and explain why a Gaussian assumption is often dangerously optimistic.
- Validating a data-driven model of a physical systemYou will be able to tell whether a machine learning model of measured data has learned anything, and recognise the specific ways in which a reported accuracy is an artefact of how the data was split.
- Time series diagnostics before you model anythingYou will be able to avoid the measurement and preprocessing errors that make every downstream analysis wrong, and estimate how far ahead a chaotic system can be predicted at all.
PIPowertrain integration7 sheets
- Engine mounting and isolation in a shock environmentYou will be able to select and place engine mounts so the engine is isolated at idle, survives shock in all six directions, and does not tear its own brackets off.
- Designing a powerpack a crew can pull in the fieldYou will be able to design an engine installation for removal and reinstallation by tired people, in the dark, wearing gloves, with the tools carried on the vehicle, and predict what turns a thirty minute job into a three hour one.
- Cooling a high-output engine in a sealed compartmentYou will be able to size the cooling airflow, build the system resistance curve, find the true operating point, and identify the recirculation and fouling failures that kill cooling systems in service.
- Alignment and the tolerance stack that decides driveline lifeYou will be able to control engine to transmission alignment through the tolerance stack rather than through adjustment in the field, and diagnose misalignment before it becomes a failure.
- Fluid line routing that survives continuous vibrationYou will be able to route and clamp fuel, oil and hydraulic lines so they do not fatigue, chafe or crack at the fitting, which is where these systems actually fail.
- Bolted joints under continuous shockYou will be able to design a bolted joint that holds under shock and vibration, and correctly diagnose the joint that passed analysis and still came loose.
- Bracket fatigue under random vibration and shockYou will be able to predict the fatigue life of a bracket in a random vibration environment, choose weld and radius details that survive, and explain why the standard analysis is optimistic.
FEFEA3 sheets
- Bolted joint sizingSizes and verifies a bolted joint end to end: preload, stiffness ratio, separation and slip margins, fatigue on the alternating share, and a torque spec with the friction assumption written down.
- FEA sanity checkAudits a simulation before anyone trusts it: reaction balance, hand-calc cross-check, singularity screen, convergence, and whether the reported stress is even the right quantity for the criterion.
- Hand calc checkProduces a documented first-principles calc sheet for beams, shafts, buckling, pressure, fits, springs, and bearings: assumptions numbered, units carried, margin reported against a named criterion.
GDGD&T2 sheets
- Tolerance stack-upBuilds a worst-case and statistical stack-up along a defined loop, ranks contributors by share of total variation, and tells you which two tolerances to tighten or which can be opened for cost.
- GD&T callout reviewReviews a drawing's geometric tolerancing for legality and intent: datum precedence, degrees of freedom actually constrained, redundant or missing controls, and whether the callout can be inspected.
QAQuality2 sheets
- DFMEA builderFacilitates a Design FMEA that teams actually use: function decomposition, physics-of-failure brainstorming, honest severity and occurrence scoring, and verifiable actions in RPN or AIAG-VDA format.
- Root cause and 8DDrives a disciplined failure investigation: is/is-not problem definition, mechanism-first causal analysis, verified root cause with evidence, and a complete 8D covering technical, escape, and systemic causes.