价值8500RMB的分析报告flywheel-report

REPORT RA-07-H4-00040

FEBRUARY 2007

STRUCTURAL ANALYSIS OF FLYWHEEL FOR DV6D / BE4

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Structure Analysis

Distribution

1. Introduce

This report describes the 3D finite element analysis flywheel for DV6D / BE4 with respect to strength and Resonnance frequency.

2. Subject / Objectives

The subject of this investigation is the structural analysis of the nodular cast iron flywheel under worst case operation for .. For this purpose the FE-Model assembly of the flywheel structure will be generated consisting of:

∙flywheel bolts

∙ a part of crankshaft

∙teeth ring

The above described structure will be analyzed with respect to following load cases ∙burst analysis,

∙Maximum transmit torque analysis

∙Resonance frequency of the part on the crankshaft

3. Input Data and Boundary Conditions

3.1 Finite Element Modelling

The FE-model is based on CAD-Model and was generated using the FE-Pre-processor HYPERMESH. Abaqus 6.5 and femfat 4.6 was used solver. The FE-model are shown in figure 1 ,ten nodes tetrahedral elements are used.

3.2 Material Data

The material used for the FE analysis are shown in table 1.

3.3 Boundary conditions

The model is constrained on the one end of crankshaft, the loads and fits used are listed on table2..

4. Results

∙ burst analysis: the minimum safety coefficient is 1.14. the results of stress are shown in fig2—fig3 .the results of deformation are shown in fig4. the results of safety coefficient are shown in fig5—fig6.

∙ Maximum transmit torque analysis: safety coefficient is2.12 .the results of stress are shown in fig7—fig8 .the results of deformation are shown in fig9. the results of safety coefficient are shown in fig10—fig11.

∙Resonance: Resonance frequency of flywheel(with teeth ring) is 411Hz. the shape are shown in fig12—fig13. Resonance frequency of flywheel(without teeth ring) is 362Hz.

5. Conclusions

∙ Flywheel can resist engine speed 10000rpm.

∙ Flywheel can resist 900N.m torque.

∙ Resonance frequency of flywheel beyond 250Hz

fig1 Flywheel FE model

fig2 Stress distribution at 10000 rpm( Deformation Scale Factor100)

fig3 Stress distribution at 10000 rpm

fig4 Displacement at 10000 rpm( Deformation Scale Factor100)

fig5 Strength safety factor at 10000 rpm

fig6 Strength safety factor at 10000 rpm

fig7 Stress distribution at 900 Nm

fig8 Stress distribution at 900 Nm

fig9 Displacement at 900 Nm( Deformation Scale Factor100)

fig10 Strength safety factor at 900 Nm