MultiMechanics Blog

What do the Model T and F-150 have in common? Advanced Materials!

Posted by MultiMechanics on Mar 24, 2015 2:23:00 PM

Henry Ford's Model T is on the verge of its 107th Birthday.  As we all know, the Model T was the first and most popular mass produced automobile in the world.  The Model T was introduced on Oct. 1, 1908 and by 1921, Ford Model Ts accounted for over half of the world’s automobile production.  

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Topics: automotive, advanced materials

Multiscale Analysis: A General Overview and Its Applications in Material Design

Posted by MultiMechanics on Mar 17, 2015 12:54:00 PM

Multiscale Modeling is a broadly used term to describe any instance where a physical problem is solved by capturing a system’s behavior and important features at multiple scales, particularly multiple spatial and(or) temporal scales.  For instance, the picture below is a temporal multiscale representation of the origins of life.  

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Topics: Multiscale, Composite Analysis

Why so Hard? Tips for the Analysis of Mass Concrete

Posted by MultiMechanics on Mar 10, 2015 1:58:36 PM

What’s the most used composite in the world?

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Topics: Composite Analysis, Concrete

The 5 Most Advanced Composites (and how to virtually test their behavior)

Posted by Andy MacKrell on Mar 3, 2015 4:21:00 PM

One of the greatest strengths of composites is their ability to be combined and used in an infinite number of ways. From race car monocoques, to space shuttle heat sheilds, to bottle openers. 

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Topics: Composite Analysis, Virtual Testing

Can Carbon Fiber Composites "Steel" the Show?

Posted by Andy MacKrell on Feb 24, 2015 2:19:00 PM

For the last 5 years, industry experts have been predicting the upspike in carbon-fiber use. For the last 5 years they have been largely right.

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Advanced Composites Spotlight: Long Fiber Thermoplastics

Posted by Andy MacKrell on Feb 17, 2015 11:30:00 AM

Much attention has been given recently to the advent of long fiber thermoplastics; some are touting them as the next revolutionary material [one, two].

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How Rule of Mixtures is Killing Your Composite Design

Posted by MultiMechanics on Feb 10, 2015 2:03:16 PM

What is considered a "composite" is always changing. Just as there is no single definition, there is also no single analytical method that can safely predict their dynamic behavior. The same way you can’t obtain ideal performance by using a single material throughout an entire car, you can’t expect to use a single analytical method to predict the behavior of all composites.

Rule of Mixtures is probably the most known, and widespread method of estimating composite properties. Its notoriety in composite design circles is also its main problem: Rule of Mixtures has been over used, and applied to cases that do not even come close to respecting its original, simplifying assumptions. If you wish to trust your analysis, it is essential to find out when it is OK, and (more importantly) NOT OK to use Rule of Mixtures. This article will describe what this rule really says, and will show some consequences of abusing this “rule of thumb” for composite behavior. 

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Topics: Composites Analysis, Composite Design

Top 5 Advanced Composite Cars at the Detroit Auto Show

Posted by MultiMechanics on Jan 27, 2015 1:00:00 PM

In 1899,  William Ernest Metzger helped organize the first Detroit Auto Show, and since 1907 the show has been running annually. 

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Topics: Composites Engineering, Composite Design

Composite Design and the World Wide Failure Excercises

Posted by MultiMechanics on Jan 20, 2015 11:30:00 AM

In our last blog, we talked about the importance of learning from failure in materials testing.  For better or worse, theoreticians have, in some ways, tried taken the burden of “learning from failure” off the plate of the common engineer.  Instead, they try to capture the insights gained from failure into flexible analytical theories; theories that (theoretically) allow us to predict a parts behavior, without knowing anything more than some material properties and part dimensions.  In computer science, this is known as abstraction.

The question is, Can composite failure theories sufficiently abstract all the nuance out of composite design? Do you need to understand the origins of a failure theory in order to use it properly?

Collectively evaluating individual failure theories:

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Topics: Composite Failure, Composite Design

Learning from Failure (in life and composite design)

Posted by MultiMechanics on Jan 13, 2015 1:13:00 PM

What thing is it, that the less it is, the more we dread it?

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Topics: Virtual Testing, Composites Engineering