Determinaton of the Spring Characteristic of a Parabolic Leaf Spring Used in a Military Vehicle by Using Non-Linear Finite Element Analysis

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TOPAÇ M. M., Bahar I.

JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, cilt.22, sa.1, ss.115-120, 2019 (ESCI) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 22 Sayı: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.2339/politeknik.389639
  • Dergi Adı: JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.115-120
  • Anahtar Kelimeler: Parabolic leaf spring, spring characteristic, vehicle suspension, non-linear finite element analysis, computer aided engineering
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The load-deflection characteristic of the parabolic leaf springs used in the solid front suspension of a four-wheel-drive multipurpose service vehicle is determined by using nonlinear finite element analysis. For this purpose, a detailed finite element model of the parabolic leaf springs of the vehicle was created and the non-linear finite element analysis of the system was carried out. By this way, vertical force-deflection characteristic of the leaf spring was obtained. Results obtained from the non-linear finite element simulation are in good agreement with the results of the vertical loading test. It was determined that the deviation between the spring coefficient obtained from the finite element analysis and the test results does not exceed 3.3% for 146 mm of the wheel travel. In the final stage of the work, the influence of shackle on the spring characteristic was investigated. By using the present application, it is possible to determine the leaf spring design dimensions that will provide the targeted vertical vibration frequency for vehicle body.