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Rear leaf spring suspension

Leaf Spring Design and Analysis

Concept design of a leaf spring and analysis against suspension and vehicle level targets.

Project Brief

As part of a wider light commercial vehicle programme, led by Corum Technology, Randle Engineering were tasked with producing a concept rear leaf spring design and conducting system level and vehicle level analysis.

Project Summary

Randle Engineering developed a concept two leaf spring which met the required package limitations and system level targets. A non-linear FEA study was conducted in MSC APEX utilising the NASTRAN solver to assess the stress and strain across the spring’s range of travel and a multi-body systems model of the rear suspension was developed in MSC Adams Car to conduct a desktop K&C analysis. This suspension MBS model was then integrated into a vehicle MBS model and the vehicle dynamics were assessed over a range of driving manoeuvres.

Project Outcomes

Successful concept design of a rear leaf spring which met the required suspension targets, vehicle level targets and package constraints.


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