NEi Newsletter - NEi Software

NEi Newsletter October 2008

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Events & Trade Shows

Lockheed Martin Mechanical Analysis Conference MAC08
Booth#812
October 5-8, 2008
Orlando, FL

SAVIAC 79th Shock and Vibration Symposium
October 26-30, 2008
Orlando, FL

Workboat 2008
December 3-5, 2008
New Orleans, LA

SolidWorks World 2009
February 8-11, 2009
Swan & Dolphin Hotel
Orlando, FL

OTC Offshore Technology Conference 2009
May 4–7, 2009
Reliant Park, Houston, TX

SAE 2009 Noise and Vibration Conference and Exhibition
May 19-21, 2009
Pheasant Run Resort
St. Charles, Illinois

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Training Classes
(Westminster, CA)

Get the most from your analysis software. NEi Nastran and Femap Training classes are a great way to learn new features and keep your existing skills at their highest level. Consider one of the following classes:

Composites Analysis
October 1-2, 2008
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Basic FEMAP
November 17-18
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NEi Nastran Advanced Nonlinear Analysis
November 19-21, 2008
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NEi Nastran with FEMAP
December 8-12, 2008

Training Classes
(Regional)

NEi Nastran with FEMAP

Herndon, Virginia
October 7-9, 2008
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Troy, Michigan
October 21-24, 2008

Please call us at 714.899.1220 or email us at training@neisoftware.com to reserve your spot at one of these classes or to request an instructor to travel to your location. For more information regarding the training classes, click here.

Webinars

Too busy to attend a trade show or one of our training classes?
Consider one of our convenient webinars such as our webinar on using NEi software in the design process of heavy machinery. Register to attend an online session to see these capabilities and to experience how NEi Software can save you time and money. NEi’s one-hour webinar will introduce the ease-of-use capabilities of FEMAP's pre/postprocessor along with NEi Nastran's robust solver solutions.

We are offering webinars on:

Introduction to FEA modeling

Introduction to Nonlinear Analysis

FEA for Composites

FEA for Heat Transfer Applications

Do you have a topic you’d like to see covered in a webinar? If so, please click the Webinar button above to submit your topic.

NEi Explicit Dynamic Impact and Interaction Analysis - Nonlinear Transient Time Step

NEi Explicit
Coming Soon

A more efficient way to analyze impacts and explosions is coming in the next few months in the form of NEi Explicit. The new NEi Nastran add-on is the dynamic solution to many nonlinear transient problems involving fluid-structure interaction, liquid-solid-gas interaction and wave propagation with time-step precision. Click here to stay informed about the upcoming release of NEi Explicit.

NEi Software Products

Don’t forget to check out all of our products!

• NEi Nastran
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• FEMAP Modeler
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• NEi Works
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• NEi Fusion
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• NEi Fluid Dynamics
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• NEi Thermal Basic
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• NEi Thermal Advanced
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• NEi Fatigue
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• NEi Aeroelasticity
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• NEi Optimization
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• NEi Motion
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• NEi Acoustics
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• LS-DYNA
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• SmartBrowser
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• NEi Nastran for Pro/ENGINEER

Contact Us

NEi Software
5555 Garden Grove Blvd.
Suite 300
Westminster, CA 92683

Toll Free: 1-877-NASTRAN
Phone: (714) 899-1220
Email: info@neisoftware.com

NEiSoftware.com

• In This Issue:

• NEi Fusion V1.4 Coming Soon
• Preview of NEi Nastran V9.2 and Femap V10
• NEi Explicit - Impact and Explosions Add-on for NEi Nastran
• Recent AUVSI Trade Show
• Composites: Progressive Ply Failure Analysis PPFA™
• Drop Test: Automated Impact Analysis AIA™
• Case Studies: NuLens Accommodative Intraocular Lens & Propulsive Wing UAV
Nastran

NEi Fusion V1.4 Release Provides Designers with Easy-to-Use, Industry Proven Nastran Simulation

NEi Fusion Finite Analysis with 3D solid parametric modeler

NEi Fusion combines a 3D Parametric CAD Modeler, pre- and post-processors and Nastran solvers to give you powerful, easy-to-use finite element analysis. Version 1.4 coming Nov. 1.

The new V1.4 release includes enhanced Meshing, Material Library, Post-processing, Load and Boundary, Save, Display and Speed.

NEi Nastran is the powerful Finite Element Analysis tool with a brilliant graphical user interface and model editor used to analyze linear and nonlinear stress, dynamics and heat transfer of structures and mechanical components, including composites. Tightly integrated with Femap V10, the new NEi Nastran Version 9.2 is slated to arrive later this month.

The new V9.2 release includes enhancements in Performance, Linear Analysis, Nonlinear Analysis, Dynamic Analysis, Composites, Thermal Stress, Elements, Results and more. Arriving November 1, 2008.

NEi Nastran

NEi Software at AUVSI 2008 in San Diego, CA

The Association for Unmanned Vehicle Systems International Unmanned Systems North America is the world's largest unmanned systems conference, with 4,600 attending the San Diego, CA June 10-12, 2008 show.

At the NEi Software booth, Wil Weisenburg and Mitch Muncy demonstrated NEi Software's FEA engineering stress analysis tools including NEi Nastran integrated with Femap (Siemens PLM), NEi Fusion and NEi Works. The latest virtual test technology from NEi includes automated impact analysis (AIA), which is used for impact scenarios from military projectiles to drop testing of electronics (cell phones, laptops). Another recent NEi innovation popular with UAV engineers is our composite material modeling and progressive ply failure analysis (PPFA), which provides insight into composite damage mechanisms so engineers can get the maximum benefit from this class of material. Composites are a frequent material choice in unmanned systems because of their performance characteristics like high strength to weight ratio and stealth. Plus, automated surface contact generation (ASCG) makes realistic simulation of contact in assemblies practical and affordable because it saves time. Last, design optimization finds solutions to problems that have competing parameters — for example, structures that must be both strong and light.

AUVSI VIDEO
Association for Unmanned Vehicle Systems International

Composites: NEi Software's PPFA™ Progressive Ply Failure Analysis

With composites being used increasingly in general public applications in all forms of products from transportation to sports, designers seek greater understanding of the nature and mitigation of catastrophic failures. NEi Nastran's included PPFA is the perfect tool for composite part advanced design. The animation below shows progressive laminate damage of a plate hole rim under tensile load until collapse (courtesy SmartCAE).

In many practical cases, the residual strength of a laminated composite part after the first-ply-failure (FPF) is still high enough to prevent the rupture of a component. So applying FPF criteria for the design may lead to excessively conservative sizing. This is not desirable in high performance applications where the weight penalty is a serious factor. PPFA allows engineers to examine structural behavior beyond first ply failure and understand post FPF events of the composite material in the nonlinear field. PPFA can be used to perform: • Risk mitigation studies • Comparison of design alternatives • What – if analysis and sensitivity studies • Conceptual understanding of events beyond FPF

More Composite Resources: Composite Engineering Composites Brochure Progressive Ply Failure Analysis Brochure What Analysts Should Know About Composites

Automated Impact Analysis AIA - NEi Nastran

Just Drop It! With NEi Nastran's built-in Automated Impact Analysis, product development engineers can gain great detailed insight into the dynamic implicit nonlinear behavior of real world impact problems and product drop testing. By exploring the effects of design changes, you can improve design quality, optimize the structural performance of products and assure they meet safety, regulatory, warranty and customer satisfaction requirements.

Many consumer products with highly compressed design cycles, such as consumer electronic products, can realize faster time to market because impact analysis allows upfront validating of concepts early in the design cycle, reducing the number of prototypes required, eliminating the amount of physical testing that must be done, and avoiding time consuming redesigns.

For virtual drop testing, NEi Nastran AIA calculates the distance the object will travel up to the point where contact is made, automatically repositioning the projectile. NEi Nastran AIA then gives you Automatic Surface Contact Generation by automatically finding contacting mesh surfaces and creating contact between the two bodies. Vibration Characteristics, the natural frequencies of both the dropped object and the target, are assessed at the point where they are just in contact, and the dominant frequencies are identified. Both the impact duration and the time step can be assessed from the characteristic mode being excited in the impact. The user defines the starting position of the projectile or drop object, the initial velocity, and the acceleration.

Automated Impact Analysis Laptop Computer AIA NEi Nastran

NEi Nastran Case Studies

Accommodative Intraocular Eye Implant

Imagine an 80 year old patient having better eyesight than when they were 25!
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NuLens Ltd. has developed a prosthetic adjustable lens replacement using NEi Nastran FEA Software.
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Force and displacement were determined using NEi Nastran's unique advanced nonlinear analysis capabilities, including surface contact with large strain hyperelastic materials that can handle large displacement scenarios.

Propulsive Wing Unmanned Aerial Vehicle

A revolutionary unmanned aircraft platform, the Propulsive Wing design utilizes partially embedded crossflow fans for thrust and flow control instead of the conventional propeller!
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Surface modeling techniques in NEi Nastran were essential to investigate the effect of various carbon-fiber composite laminate schedules on the distribution of stresses in the airframe. Analysis showed large stress concentrations, determined material thickness and accelerated development of final construction techniques.

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