In the automotive industry, the riding comfort and handling qualities of an automobile are greatly affected
by the suspension system. In this paper a suspension arm model based on finite element analysis (FEA) is
proposed. First, critical location and suitable materials for the suspension arm has been identified, and
then the contact stress analysis and dynamic behavior of lower arm has been investigated. A structural
modeling of the lower arm suspension was developed using Solid Works and aluminum alloys (AA7075T6) are selected as a suspension arm materials. The linear static stress distribution is investigated using
the commercial FEA package, and dynamic analysis was performed using NASTRAN software. Two
types of nodes, 4 nodes tetrahedral (TET4) and 10 nodes tetrahedral (TET10) has been used in the finite
element modeling. According to the results TET10 are able to capture the higher stresses than TET4 for
the same global length. In addition TET10 mesh size 0.1 mm (54178 elements) has been chosen for
dynamic analysis because of predicted higher maximum stresses. This model will provides a solid
foundation for further study of failure life analysis of the suspension arm components.
Keywords: lower arm, finite element analysis, natural frequency
There are three different suspension arms available: medium (optional), hard (included), and graphite (optional), each suitable for particular track conditions.
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Labour and the SNP have called for an independent UN-led investigation into the allegations, with the suspension of arms sales while it takes place.
Typically, aftermarket tuners will tear the leaf springs out and replace them with coil spring systems simply to make life easier. GM left many things on the Corvette with room for improvement. Leaf springs are not really a fundamental problem - typically the view is that Corvettes would be no better from the factory with coil springs. A traditional leaf spring live axle saves money because the cost of leaf springs is less than coils, trailing arms, pan hard rod etc. The Corvette has all the same suspension arms as a system with coil springs, so the only difference is the cost of the fibreglass leaf vs. the cost of the coil spring; leaf springs cost more than a coil so GM didn't do it to save money. It's not immediately clear then why they did it other than perhaps 'because they could'.