Browse Publications Technical Papers 2003-01-0664
2003-03-03

Theories and Capabilities of Intumescent Mat Numerical Modeling 2003-01-0664

Intumescent mat is widely used to support ceramic substrates in catalytic converters and is subjected to thermo-mechanical loading. As the substrate wall thickness becomes thinner to reduce backpressure and emission, exact prediction of mat pressure becomes more important in design stage to prevent future substrate failure during the canning and thermo-cyclic loading test. Experiment shows that the mat mechanical behavior is very much like highly nonlinear rate dependent hyper-foam material and it has permanent plastic deformation after either thermal or mechanical loading. Also, mechanical material property changes due to the temperature. This paper introduces some of the key features in developing constitutive model based on the hyperelastic theory by including viscous and plastic effects. To account for material property change at each temperature, material softening model will be introduced with respect to temperature and mechanical strain. The theory is coded as an implicit algorithm in ABAQUS™/STANDARD. Simulation and thermo-mechanical cyclic tests are compared to validate constitutive model.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 17% 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

Fuel Tank Heat Shield Design

902259

View Details

JOURNAL ARTICLE

Water Ingress Analysis and Splash Protection Evaluation for Vehicle Wading using Non-Classical CFD Simulation

2017-01-1327

View Details

TECHNICAL PAPER

Evaluation of MAST Transfer Function in the Vehicle Exhaust System Full System Durability Test

2002-01-0802

View Details

X