NAFEMS Americas and Digital Engineering (DE) teamed up (once again) to present CAASE, the (now Virtual) Conference on Advancing Analysis & Simulation in Engineering, on June 16-18, 2020!

CAASE20 brought together the leading visionaries, developers, and practitioners of CAE-related technologies in an open forum, unlike any other, to share experiences, discuss relevant trends, discover common themes, and explore future issues, including:
-What is the future for engineering analysis and simulation?
-Where will it lead us in the next decade?
-How can designers and engineers realize its full potential?
What are the business, technological, and human enablers that will take past successful developments to new levels in the next ten years?

Resource Abstract

CAE-Driven Accelerated Durability Test for Carbon Canister Bracket Assembly

Payam Darbandi, Alan Gregory

Carbon canister is one of the key components for emission control system in vehicles. Performance of this component is assessed using different analytical and physical testing tools. To determine the in-service reliability of the components, numerous life-representative durability test is being performed during different stages of product development process. The first step for conducting the durability tests for different automotive components is preparing a special type of durability tests profiles which are based on converting the random, stationary and gaussian accelerations time series acquired from proving ground to frequency-based data. Performing the test based on these test profiles can be very expensive and time consuming.

Although, the durability performance of the carbon canister assembly can be assessed using FEA and fatigue calculations some components in the assembly can be so complex that it is not possible to produce a detailed computational model for the system; hence some degree of physical testing is unavoidable. On the other hand, since cost and time are very critical in today’s product development processes, implementing a reliable and efficient accelerated test is very desirable element in designing a robust and efficient carbon canister. In this study an accelerated durability test, based on a Power Spectral Density (PSD) profile has been proposed. Evaluation process involves using validated CAE models to compare the stress and acceleration response of different carbon canister designs to proposed PSD versus an existing (time-consuming) PSD. In order to conduct the CAE analysis, modal analysis has been conducted and frequency response functions of carbon canister structures have been calculated in different loading directions. Fatigue life, acceleration and statistical values of stresses have been calculated to estimate the durability performance for steel and plastic components for both PSDs. CAE results show good correlation in terms of stress and acceleration responses for the existing and the proposed PSD. Significant cost and time reduction are expected with using this accelerated test profile.