Tag - MSC Nastran

15
Apr

Lightweight, High Performance Composites – How to Account for the Uncertainty in Composite Material Properties

Question: How can I account for the uncertainty in composite material properties? Answer: You can perform a Stochastic Analysis. I've quoted a description from Andrew Main's Use of Finite Element Analysis to Create Robust Composite Designs – Going Beyond First Ply Failure. Stochastic analysis is not a method that was developed for composites but the large ...
9
Apr

Lightweight, High Performance Composites – Using FEA to Predict the Gradual Failure of Adhesives

Question: How can FEA be used to model the gradual failure of adhesives in composites? Answer: You use the cohesive zone modeling technique. Here is quick explanation of CZM from Andrew Main’s Use of Finite Element Analysis to Create Robust Composite Designs – Going Beyond First Ply Failure. Unlike virtual crack closure, cohesive zone modeling ...
5
Apr

Lightweight, High Performance Composites – Predicting crack propagation of adhesives and resins

Question: How can FEA be used to predict the crack propagation of adhesives and resins in composites? Answer: You use the virtual crack closure technique. These methods work well for brittle adhesives, but if you have more flexible adhesives, use the cohesive zone modeling technique.  Here is quick explanation of VCCT from Andrew Main’s Use of ...
21
Mar

Why is NIVIDIA GPU computing in MSC’s FEA programs so fast?

Improve your FEA of composites Answer: Desktop Engineering recently did an article going detailing some of the reasons why engineers can do FEA faster with GPU computing. I have provided a copy of the article below. Prelude to GTC 2013: MSC Software’s Ted Wertheimer on GPU Acceleration of Simulation Published March 13, 2013 | By ...
23
Jan

Machinery Design – The Ups and Downs of Finite Elements in Elevator Design

Schindler Lifts automates its FE calculations with CAE tools from MSC Software. Schindler is market leader in the lift and escalator sector and has offices in all five continents. Schindler’s offerings range from passenger lifts suitable for small blocks of flats to sophisticated transport solutions for skyscrapers. Service lifts ensure the stress-free movement of goods and ...
19
Jan

Nonlinear Analysis – Simulation of Under Water Explosion

Question: How do you analyze a structure subjected to under water loading? Answer:You use explicit nonlinear analysis and simulate the event as detailed in this paper Simulation of Under Water Explosion using Dytran. The paper was orginally authored by Peiran Ding and Arjaan Bujik. I’ve included the abstract below. Abstract This paper describes the numerical ...
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