MECHANICAL DESIGN · CAD · VEHICLE INTEGRATION

REAR
SUSPENSION

Development of a rear suspension and wheel-end assembly, combining suspension geometry, MATLAB-based kinematic definition, component design, packaging and production-ready engineering drawings.

FOCUS Suspension · Wheel End
TOOLS CAD · MATLAB
OUTPUT Geometry · Components · Drawings
Rear suspension CAD assembly
01

DESIGN CHALLENGE

FROM VEHICLE TARGETS TO GEOMETRY

The rear suspension was developed as an integrated vehicle system rather than a collection of isolated CAD parts. Suspension geometry, wheel-end packaging, load paths, manufacturability and serviceability therefore had to be considered together.

A key part of the workflow was translating vehicle-level geometry into defined suspension pickup points before progressing into detailed component and assembly design.

Complete rear suspension and wheel-end assembly
Integrated rear suspension and wheel-end architecture.
02

KINEMATIC DEFINITION

MATLAB SPLINE & PICKUP-POINT DEVELOPMENT

MATLAB was used as an engineering tool to calculate and manipulate suspension geometry before the final CAD architecture was fixed. The calculator created a repeatable link between numerical geometry definition and the physical suspension layout.

Rather than positioning links visually in CAD, the suspension could be defined from calculated coordinates and geometry changes applied systematically.

01 Define suspension geometry numerically.
02 Generate and assess spline / kinematic behaviour.
03 Convert calculated results into 3D pickup-point coordinates.
04 Use the coordinates to drive the CAD architecture.
MATLAB suspension spline calculator
MATLAB calculator supporting suspension geometry development.
Suspension pickup points in three-dimensional space
Calculated suspension pickup points defined in free space.

NUMERICAL → PHYSICAL

CONNECTION POINTS IN 3D SPACE

The calculated coordinates establish the hard-point architecture for the suspension links and upright, directly bridging the numerical study and final CAD model.

03

CAD DEVELOPMENT

UPRIGHT & SUSPENSION ARCHITECTURE

Suspension connection geometry
Suspension links positioned from the defined hard-point architecture.

With the hard points established, the suspension was developed around the upright and wheel-end package. The link architecture had to preserve the intended geometry while providing realistic component interfaces and clear load paths.

Packaging was considered alongside component access, joint orientation and the relationship between the upright, wishbones and wheel-end hardware.

04

COMPONENT DEVELOPMENT

WHEEL-END INTEGRATION

Wheel assembly
WHEEL ASSEMBLY Integrated rim, centre and retention architecture.
Brake system
BRAKE SYSTEM Rotor, carrier and caliper packaged within the wheel end.
Wheel centre
WHEEL CENTRE Detailed component development within the rotating assembly.
05

DESIGN JUSTIFICATION

DETAILING THE WHEEL END

Wheel-end section
ASSEMBLY IN SECTION Packaging, interfaces, bearings and retention.
Hub design justification
HUB DEVELOPMENT Material, manufacturing and interface decisions.
Centre locking nut
CENTRE-LOCK RETENTION Retention developed around assembly and manufacturing requirements.
06

ENGINEERING DEFINITION

ASSEMBLY & PRODUCTION DRAWINGS

The final CAD was translated into assembly and part drawings to communicate component interfaces, materials, tolerances and manufacturing intent. The set demonstrates GD&T, datums, section views, bills of materials and assembly definition.

07

PROJECT OUTCOME

FROM CALCULATION TO ENGINEERING DEFINITION

01

Used MATLAB to support suspension geometry and translate calculated results into CAD hard points.

02

Developed an integrated suspension and wheel-end architecture around component and packaging constraints.

03

Produced detailed part and assembly drawings communicating manufacturing and GD&T requirements.

“The strongest part of this project was connecting calculation, analysis and CAD rather than treating them as separate activities. The suspension geometry informed the physical architecture, while the final drawings forced the design to be considered at a manufacturable component level.”