Numerical Analysis of A Nonlinear Elastic Composite Leaf Spring

Abstract

In this study, numerical analysis of a composite spring with a nonlinear elastic force-displacement relationship was performed. Due to the lightness and durability of composite materials, their use in the automotive industry is increasing and production methods allow for a high performance spring design. The behavior of a pair of composite leaf springs working in tandem with the cross-section profiles of the leaf springs to be obtained by using the involute curve of the spur gear pairs under load was examined in detail by numerical method, and the desired behavior was obtained. In the analyzes performed using Ls-Dyna software, samples were produced and many mechanical tests were performed for the determination of material parameters. The results obtained from these tests were used as the required material parameters in numerical analysis. The leaf spring thickness that will give the desired non-linear elastic behavior under 400 N load used in numerical analysis has been determined and successfully targeted force-elongation behavior has been created.

Keywords

• Composite
• leaf Spring
• nonlinear elastic
• FEM

Doğrusal Olmayan Elastik Kompozit Yaprak Yayın Nümerik Analizi

Abstract

Bu çalışmada, doğrusal olmayan elastik bir kuvvet-yer değiştirme ile kompozit bir yayın nümerik analizleri yapılmıştır. Kompozit malzemelerin hafiflik ve dayanıklılığından dolayı otomotiv sektöründeki kullanımı artmakta ve üretim metotları yüksek performanslı yay tasarımı için olanak sağlamaktadır. Yük altında düz dişli çiftlerinin evolvent eğrilerini kullanarak elde edilen yaprak yayların çapraz kesitle birlikte çalışan kompozit bir çift yayın davranışı, nümerik metotla detaylı olarak incelendi ve istenilen davranış elde edildi. Ls-Dyna yazılımı kullanılan analizlerde, numuneler üretildi ve malzeme parametrelerinin belirlenmesi için bir çok mekanik test yapıldı. Bu testlerden elde edilen sonuçlar, nümerik analizde talep edilen malzeme parametreleri olarak kullanıldı. Nümerik analizde kullanılan 400 N yük altında istenilen doğrusal olmayan elastik davranışı verecek olan yaprak yay kalınlığı belirlenmiştir ve hedeflenen kuvvet-uzama davranışı başarıyla oluşturulmuştur.

Keywords

• yaprak yay
• Kompozit
• Doğrusal olmayan elastik
• FEM

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