VehicleLab / Ride

Half Car Study

Generic passenger-car half-car

Unavailable · run this analysis to create completed evidence.

study statusPreparing Studio

ModelHalf Car · 4 DOFQuarter Car · 2 DOF

Analysis

Your engineering journey0 explored · Half Car

0 of 7 Half Car capabilities explored. Shared exports count across models. History records completed work, not the current state of your inputs or results.

One useful next stepStudy · Half-Car Transient

Complete a run in this workspace to explore it.

Study

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2 capabilities to explore

Half-Car FrequencyNot explored
Half-Car TransientCurrent · Not explored

Explore

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Half-Car TransientNot explored

Compare

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2 capabilities to explore

Half-Car FrequencyNot explored
Half-Car TransientNot explored

Report

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Engineering ReportNot explored
Engineering VideoNot explored

Data & projectUntitled local project

Project files preserve definitions and context. Results are regenerated by the deterministic solver and exported separately.

Project name OptionalEngineering objective OptionalNotes Optional

Files are processed locally and are never uploaded.

Run provenanceLocal · Float64 · RK4 · Model v0.1.0

Model: vehiclelab.half-car.linear-passive v0.1.0
Solver: vehiclelab.rk4.fixed-step v0.1.0
Execution: Browser Web Worker
Precision: Float64
Product: VehicleLab 1.1.1

Model & assumptionsLinear passive 4-DOF · static equilibrium

Longitudinal linear passive half-car: body heave, nose-up pitch, front and rear unsprung vertical motion (4 DOF / 8 states).
Small-angle pitch about static equilibrium; upward-positive vertical displacement. Suspension attachment motion is z_s + a*theta at the front and z_s - b*theta at the rear.
Generic passenger-car parameters have no measured vehicle correlation or physical-validation claim.
Independent prescribed front/rear road inputs. Speed may generate rear road timing in Study; it is not a differential-equation parameter.
No roll, lateral dynamics, nonlinear suspension, tire contact loss, active control or measured-data correlation.
This report contains transient evidence. Half-Car Frequency Study is a separate harmonic analysis. Motion remains display-only.

Engineering question

How do body heave and pitch respond as a road event reaches each axle?

Next useful step

Wait for this run to finish before changing workspaces.

Half-Car Transient Study

Generic passenger-car half-car · body heave and pitch

Vehicle body

Sprung mass (kg)Pitch inertia (kg·m²)CG to front axle (m)CG to rear axle (m)

Suspension

Front suspension stiffness (N/m)Front suspension damping (N·s/m)Rear suspension stiffness (N/m)Rear suspension damping (N·s/m)

Road relationshipAxle road relationshipVehicle speed (km/h)

Rear axle delay: 0.300 s · wheelbase / speed

Speed generates rear road timing only.

Front roadFront road shape

Front road amplitude (mm)Front road start (s)Front road duration (s)

Advanced inputs

Unsprung / tire

Front unsprung mass (kg)Rear unsprung mass (kg)Front tire stiffness (N/m)Rear tire stiffness (N/m)

Initial state · equilibrium offsets

Initial body heave (m)Initial body heave velocity (m/s)Initial body pitch (rad)Initial body pitch rate (rad/s)Initial front unsprung displacement (m)Initial front unsprung velocity (m/s)Initial rear unsprung displacement (m)Initial rear unsprung velocity (m/s)

Numerical setup

Simulation duration (s)Time step (s)

Model assumptions and limitations

Longitudinal linear passive half-car: body heave, nose-up pitch, front and rear unsprung vertical motion (4 DOF / 8 states).
Small-angle pitch about static equilibrium; upward-positive vertical displacement. Suspension attachment motion is z_s + a*theta at the front and z_s - b*theta at the rear.
Generic passenger-car parameters have no measured vehicle correlation or physical-validation claim.
Independent prescribed front/rear road inputs. Speed may generate rear road timing in Study; it is not a differential-equation parameter.
No roll, lateral dynamics, nonlinear suspension, tire contact loss, active control or measured-data correlation.
This report contains transient evidence. Half-Car Frequency Study is a separate harmonic analysis. Motion remains display-only.

Half-Car Response

Heave + pitch · front / rear responses · completed engineering samples

Run this Study to create authoritative results.