Browse Publications Technical Papers 2006-01-0017
2006-04-03

Stress Analysis of an Automotive Engine Valve by Finite Element Methods 2006-01-0017

A detailed study, by finite element method (FEM), was conducted on an automotive engine exhaust valve subject to various loads (i.e. spring load, combustion pressure load, temperature profile and valve impact closing velocity). The 3D nonlinear (contact element and temperature-dependent) thermal-mechanical model was constructed and implicit time integration method was employed in transient dynamics under impact velocity. The predicted temperatures and maximum valve stress under impact velocity via FEM were compared with the measured test data, which were in good agreement. In addition, this study finds that the energy transfer during valve closing in normal engine operation is mainly conservative, and a linear relation exists between valve closing velocity and maximum stem stress, that was also confirmed by both test data and analytical expression presented using elastic wave and vibration theory.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Fatigue Life Assessment on an Automotive Engine Exhaust Valve

2006-01-0977

View Details

TECHNICAL PAPER

Variable Valve Timing By Means of a Hydraulic Actuation

2000-01-1220

View Details

TECHNICAL PAPER

Fatigue Analysis Methodology for Predicting Engine Valve Life

2003-01-0726

View Details

X