Parabolic Leaf Spring Design Optimization Considering FEA & Rig Test Correlation Olguncelik

Format:

Conference/Event

Author/Creator:

Soner, Soner, author.

Contributor:

Erdogus, Tolga

Guven, Nilay

Kanbolat, Ahmet

Karaagac, Mustafa

Conference Name:

Commercial Vehicle Engineering Congress (2011-09-13 : Chicago, Illinois, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Parabolic leaf springs are safety components on the suspensionsystem. They provide ride comfort due to calculated stiffnesscharacteristics and they absorb and release energy associated withthe road outputs of a fully loaded vehicle. Leaf springs determinethe desired vehicle ride height from the ground. As a criticalsafety part, leaf spring endurance must be ensured.Conventional leaf springs, multi-parabolic leaf springs andparabolic leaf springs are the general types in use. The mostcommonly used type of leaf spring is the parabolic leaf spring. Themain advantages of parabolic leaf springs are that they arelighter, cheaper, with fatigue advantages, and they isolate morenoise.Classical leaf spring design and prototype process methodologyconsists of fatigue tests repeated for each case consideringdifferent geometry alternatives, leaf layer additions, material andsuspension hard points improvements. This methodology takes a longtime and requires a significant budget.In this study, five-layer parabolic leaf springs have beenoptimized to four layers based on material, geometric designimprovement, nonlinear finite element analyze calculationsregarding boundary conditions of leaf spring. The rig testvalidation of 5-layer parabolic leaf springs which is wellcorrelated with finite element results has been summarized. Later,the finite element model of the new design has been generated bydecreasing weight through removing layers at the same boundaryconditions and evaluations have been made in comparison with thefirst design.Performance requirement considering load and deflection,packaging requirements considering parabolic leaf spring length,width, service requirement, risk assessments, businessconsiderations, and all other requirements regarding optimizedparabolic leaf spring design have been detailed.This paper presents a precise method called the OlgunÇelikvirtual prototype process and will remain as a reference for leafspring producers and designers

Notes:

Vendor supplied data

Publisher Number:

2011-01-2167

Access Restriction:

Restricted for use by site license