Category - Aerospace & Defense

27
Apr

Acoustic Simulation for the Aeronautical Industry

  Acoustic Simulation For the Aeronautical Industry   With the expansion of air travel around the world, competition between airlines has become much tougher. Airplane companies are under constant pressure from governments around the world to reduce noise and from consumers to reduce the cost of air travel. For many companies, noise is a chronic ...
18
Apr

Acoustic Simulation for Spacecraft Launch

Launching a rocket into the sky is not an easy thing. There are several thousands of unimaginably complex engineering processes occurring in the background, the competition is getting tougher every day, and companies frequently only have one chance to get the launch sequence right. So what is hindering efforts to launch more powerful rockets in ...
18
Mar

Assembly Modeling of Aerospace Structures Using Contact Simulation

Bolted or riveted airframe assemblies are typically modeled as continuous meshes. But advances in meshing and solver technology are changing the way we model these assembly structures. Today, continuous meshes are often replaced by individually meshed parts joined together by some type of connector or interaction definition. These individually meshed parts are typically joined together ...
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 ...
3
Apr

Over Designing Fiber Reinforced Plastics

Attend our seminar in Southern California on April 23, 3013 Attend training in Indiana on May 30, 2013 Imagine you have designed a part, only to find out later the predicted maximum stresses are in fact lower. It’s too late to make any design modifications, and now your part is produced for a maximum stress ...
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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