Numerical Analysis of A Nonlinear Elastic Composite Leaf Spring

The structural design of vehicles plays an important role in improving vehicle safety and driving performance. In this study, the frame structure of a van-type electric truck was taken as a research object. Stress, strain, and modal analyses of this frame structure were performed using Abaqus, a finite element software, to verify the rationality and safety of the structural design. The frame structure was optimized by numerical analysis. The fourth beam was moved 524 mm forward between the installation points of the power battery pack and the rear lifting lug of the front leaf spring. Results showed that the optimized frame bending, the full-load braking condition, and the full-load torsional operating condition stresses decreased by 44.499%, 23.364%, and 31.303%, respectively. The bending stiffness of an optimized frame increased by 4.026%, whereas the front and rear torsional stiffnesses increased by 4.442% and 4.092%, respectively.

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Numerical analysis of a nonlinear elastic Rayleigh wave

International Applied Mechanics ◽

10.1007/s10778-012-0548-4 ◽

2012 ◽

Vol 48 (6) ◽

pp. 719-726 ◽

Cited By ~ 3

Author(s):

E. A. Khotenko

Keyword(s):

Numerical Analysis ◽

Rayleigh Wave ◽

Nonlinear Elastic

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Numerical Analysis of Ratcheting Under Bending- Membrane Loading Conditions

10.38032/jea.2020.01.003 ◽

2020 ◽

Vol 01 (01) ◽

pp. 11-15

Author(s):

Sajib Kumar Nath ◽

Md Makfidunnabi ◽

Md Abdullah Al Bari

Keyword(s):

Numerical Analysis ◽

Loading Conditions ◽

Analysis Model ◽

Element Analysis ◽

Finite Element Analysis Model ◽

Primary Stress ◽

Fea Model ◽

Nonlinear Elastic ◽

Secondary Membrane ◽

Incremental Collapse

Ratcheting is a vital failure mode when dynamic loading is present in the scenario and it can lead to fatigue or incremental collapse if not restricted. The purpose of this study is to propose a ratchet diagram for primary bending and secondary membrane loading conditions. For this, a finite element analysis model of a rectangular beam is prepared and solved by the numerical analysis software ‘ABAQUS’. The FEA model is validated by carried out a dynamic nonlinear elastic-plastic analysis with the analytical solution of Yamashita et al. for similar loading conditions. The ratchet occurrence conditions plotted in a non-dimensional stress parameter plot similar to the Bree diagram. The findings suggest that secondary stress rises for the occurrence of ratchet conditions as primary stress decreases. It also found a strong frequency dependency feature. The nature of the input frequency of cyclic loading in the proposed ratchet diagram has been discussed in terms of dynamic displacement over static displacement in the change of non-dimensional frequency of the loading.

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