Browse Publications Technical Papers 2000-01-0316
2000-03-06

Stress Analysis of Instrument Panel Knobs 2000-01-0316

In this paper, hoop stresses in the hubs of plastic knobs used in instrument panels are analyzed. The objective is to provide analytical formulas for stresses due to knob assembly and temperature cycling. Insertion forces are estimated using simple beam equations to model spring deflection. These forces are used to predict stresses in the D-shaped hubs of the knobs, using equations for thick pressure vessels. Solutions for stresses due to thermal expansion mismatches between the plastic hub and metal spring are derived using a press-fit analogy. Finite element analysis (FEA) is used to supplement and validate the analytical results. The proposed simple calculations are useful for up-front design assessment, enabling the engineer to select appropriate dimensions for knob hubs, springs and shafts.

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

Trunk Lid Torsion Bar Design Based on Reverse Engineering Method

2017-01-1303

View Details

TECHNICAL PAPER

Use of High Strain-Rate Material Data for Predicting Head-Impact Performance of Thermoplastics

950331

View Details

TECHNICAL PAPER

An Application Flexible Method to Limit the Loads in Windshield Wiping Systems

2005-01-1835

View Details

X