3D Printed Metometrials Control Complex Geometry to moist mechanical vibration

In science and engineering, innovation is an unusual thing. It is often the work of a worker through which it gradually becomes normal.

But we can be at an infection point along the path when it comes to an engineer structure, whose mechanical properties are contrary to anything that appears in nature, also known as mechanical metometerial. A team headed by researchers from the University of Michigan and Air Force Research Laboratory (AFRL) has shown how 3D printing tubes that can use their complex structures in stamility.

Such structures can be useful in numerous applications where people want to reduce vibration, including transport, civil engineering and more. The team’s new study, appeared in the journal Physical review appliesFor decades, he has created theoretical and computational research to create a structure that disrupts vibration in an attempt to move from one end to another.

“This is the place where the real novelty is,” said James McNene, a research colleague at AFRL. Earlier, McKenni Um was a post -documentary fellow working with Professor Xiaoming Mao, who is also the author of this new research.

“We hope that they can be applied for good purposes,” said McKinny. In this case, this vibration is lonely. “

The UM Associate Professor of Mechanical Engineering participated in the study, such as the University of Texas’s Owlman Odghiri Idraysi and AFRL’s Carson Wali and Abigil Johal.

“For centuries, humans have improved the content by changing their chemistry,” Mao said. “These geometric principles can apply to Nanoskal to macroskel, which gives us extraordinary strength.”

Structural foundations

The new study is like the old school’s structural engineering, relatively new physics and modern fabric technologies, such as 3D printing, which is becoming increasingly impressive.

“There is a real possibility that we will be able to produce content from crazy precision land,” he said. “The vision is that we will be able to produce very special architecture and the question we are asking is,” What can we do with it? How can we create new materials that we are different from using? “” ‘

As Mao said, however, the team is not fighting with the content chemistry or molecular structure. Researchers are investigating how they can use the precise control of a discretionary building material to clarify new and beneficial features.

For example, human bones and plateton “shells” take advantage of this strategy in nature. They are created with complex geometry so that you can get more than you can make from the substances from which they are made. With 3D printing such as tools, researchers can now apply this strategy to the aftermath of engineer searching on metals, polymers and other materials that are not available before.

“The idea is not that we are going to change steel and plastic, but will use them more efficiently,” McKinny said.

Meeting old school from New School

Although this work relies on modern innovations, it has important historical defects. For one, the 19th -century renowned physicist, James Clerk, is the job of Maxwell. Although he is most famous for his work in electromagnetic and thermodynamics, he also doubled in mechanics and developed useful design protection for creating stable structures with subonitis called Maxwell Lotis, McChanni said.

Another important concept behind the new research came at the end of the 20th century, as physicists have found that interesting and disturbing behaviors have emerged near the edges and boundaries of material. Because of this, there was a new department of studies, known as Topology, which is still very active and is working to explain these behaviors and to help them in the real world.

“A decade ago, a seminal post, which found that Maxwell Lites could display a toopological phase,” McN Annie said.

In the past several years, McKinny and his colleagues have found the implications of this study as they are related to vibration isolation. The team has developed a model that describes this behavior and how to design a real item that shows it. The team has now proven that its model is still at its latest stage by making 3D printed nylon with such items.

A brief look at the structure shows why making them first was to make such a challenge. They resemble the fence of a chain link that is folded and turned with the internal and outer layer attached to a tube. Physicians call the Kagoom tubes, a traditional Japanese basket referring to the formation of similar samples.

However, this is the first step to understand the ability of such a structure, McKinny said. For example, the study also showed that better structure is in suppressing vibration, which may lose weight. He said it is a costly, potentially unacceptable, trade in terms of requests, but it highlights interesting opportunities and questions that are at the basic level.

Since such novel structures are made, scientists and engineers need to prepare new standards and perspectives to test, test, feature and evaluate them, which is a challenge that pleases mechanism.

“Since we have such new behaviors, we are still not only exposing models, but the way we will test them, the results we will get from the tests and how we will impose these results in the design process,” he said. “I think these are questions that need to be honestly answered before answering questions about the application.”