All Categories : Technical White Papers : CAE and FEA Bookmark and Share

Title : Probabilistic Simulation Applications in Product Design
Company : SIMULIA
File Name : probabilistic-simulation-applications-in-product-2008.pdf
Size : 148075
Type : application/pdf
Date : 09-Jul-2011
Downloads : 4

Rate This File
5 Stars
4 Stars
3 Stars
2 Stars
1 Star

Each year companies spend millions of dollars for developing new products with high quality and reliability. Highly reliable products require longer test times to verify, and usually takes a few iteration of design-test-fix cycle. Development time can be minimized by (1) doing accelerated testing (ALT) and (2) reducing the design-test-fix cycle by developing methods to predict and test for reliability in simulation environment. Finite element modeling and analysis provides an excellent alternative in evaluating designs to improve on reliability. In this paper, a probabilistic simulation methodology is proposed using a combination of simulation modeling and statistical techniques to predict and improve the drop reliability of a product under repeated random loading. Two examples are illustrated involving two failure modes in two different products a screw pull out and a magnesium housing cracking. Explicit dynamic finite element phone drop simulations were performed in Abaqus to predict the forces in the screw and the principal tensile stress on the housing for various simulation parameters. DOE and Response surface modeling was used to develop regression equations for stress as a function of drop angle. Using the statistical techniques, a probabilistic model was developed by combining the RSM model & statistical distribution of drop angle, to estimate the distribution of the stress. In conjunction, strength degradation models were developed to reflect the housing degradation with each impact. Finally, Monte Carlo Simulations are used in conjunction with the stress-strength interference theorem to predict product reliability. In conclusion, a powerful and practical methodology is proposed that integrates the FEA with statistical methods to predict up front, the reliability of a product.
User Reviews More Reviews Review This File
Autodesk - DelCAM

Featured Video
Jeff RoweJeff's MCAD Blogging
by Jeff Rowe
Apple Adding To Computer Product Line Minus Ports
Currently No Featured Jobs
Upcoming Events
3D Collaboration & Interoperability Congress at 1310 Washington Ave. Golden CO - Oct 25 - 26, 2016
Electric&Hybrid Aerospace Technology Symposium 2016 at Conference Centre East. Koelnmesse (East Entrance) Messeplatz 1 Cologne Germany - Nov 9 - 10, 2016
Autodesk University Las Vegas at Las Vegas NV - Nov 15 - 17, 2016
TurboCAD pro : Limited Time offer

Internet Business Systems © 2016 Internet Business Systems, Inc.
595 Millich Dr., Suite 216, Campbell, CA 95008
+1 (408)-337-6870 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation GISCafe - Geographical Information Services TechJobsCafe - Technical Jobs and Resumes ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy Policy Advertise