Mechanical Behaviors of Composite Leaf Springs with Additive of Carbon Nanotubes and Chitosan
Abstract
Suspension systems are automotive parts which absorb sudden impacts caused by roads and providing comfort have an essential role in the automotive sector. Reducing weight is a fundamental way to decrease energy consumption and emission release. This study establishes improvement conditions by analysing layered composite springs which have different compositions and different support angles under various weights. Ten plaques which made with various compositions chitosan and carbon nanotubes, also one-way glass fiber/epoxy composite plaques with prepreg method and one unalloyed plaque were produced. Standard samples were extracted by water jet and pull&push test were applied to identify mechanical properties. Five standard samples were used to identify each mechanical property. Mechanical properties of samples with different compositions were compared.
Identified mechanical properties were used as material properties at the ANSYS ACP PRE&POST analysis program. Composite spring thicknes were 12 mm and it is composed of 60 layers. Static analysis of composite springs modelled with five different layer orders was done by applying 1000 N, 2000 N, 3000 N and 3750 N force. Collapse, stress and shape changes of composite springs were examined at static analyses.
Analysis show that unalloyed composite leaf spring is more resistant than its counterparts. When Layer Order 1 (TD1) [0°)] 60 with the same direction for fiber and horizontal axis of composite leaf spring is compared with others, it is seen that composite spring with TD1 is more rigid against bending. Damage analysis was done with ACP POST program according to Tsai-Wu and Hashin standards and it is seen that end points of springs were mostly damaged. Most damaged one is the TD5 leaf spring with [(0°5/90°5/45°10/-45°10)]s layer order under 3750 N according to Tsai-Wu standard. In addition to that, composite leaf springs were %49,84 lighter than mostly used one leaf steel counterparts.
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References
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Details
Primary Language
English
Subjects
Engineering
Journal Section
Research Article
Publication Date
October 31, 2019
Submission Date
August 1, 2019
Acceptance Date
October 25, 2019
Published in Issue
Year 2019