Essay on The Fastest Computer

Memo

To: Howard Wagner, Supervisor

From: Name

Date: January 29, 2018

Subject: Simulating materials failure by using up to one billion atoms and the world's fastest computer: Brittle fracture

Mr. Bobby Mo,

While the world is being innovative along with the latest technology, the fastest computer is really necessary to meet the current technological trends around the globe. In order to help the company effectively perform into the atomic simulation projects, I have researched on simulating materials failure and the fastest computer of the world.

Findings

World’s fastest computer was delivered to the “Lawrence Livermore National Laboratory” by IBM couple of years ago that was called “the computer of tomorrow” by Scientific American.

Accelerated Strategic Computing Initiatives (ASCI) white computer, for the first four months, was tuned so that different field’s scientists could get the privilege to play with this system. Department of Energy was some of those lucky players and the important goal of material science program was to achieve material failures’ better understanding under extreme conditions. The research is about crack propagations’ multimillion-atom simulation study in the rapid brittle fracture where speed of sound is lower than the cracks travel.

The authors accomplished two projects of atomistic simulation. The first project was the crack propagations’ multimillion-atom simulation in rapid brittle fracture while ductile failure was investigated in second one by using more than one billion atoms.  A dominant role is being played by the local wave speeds in the cracks’ behavior in the anharmonic crystals. The behavior of mixed case is like the interface crack somewhat between the stiff material and the soft material. Although a material properties are identical of anharmonic and harmonic crystals under the tiny deformation, biomaterial resembles the local material properties around tip of the crack.  Local wave speeds that are nonlinear dominates the crack behavior. This has practical importance as well as theoretical interest. It is known that rubbers and many other polymeric materials’ modulus is significantly increased when stretched.

Moreover, the polynomial chains, when stretched to high deformation, are straightened. The elastic module, in such solids, increase with the strain and speeds of local wave would be larger near the crack than the speed of linear elastic wave. In such speed, the cracks’ dynamic behavior should be propagating at the speed more than the conventional wave speeds. The findings of the study centers on the bilayer solid which operates under high strain such as interface crack between the linear and nonlinear wave speeds that can be in solid’s conventional sound speeds’ excess.

Recommendations

The speed of the computer plays a major role for successful and efficient operation of simulation materials. Installing fastest computer at the organization should be the first priority for the dynamic behavior of cracks and it should be made sure that speed must exceed the speeds of conventional waves. Local wave speeds’ nonlinear continuum theory is helpful to predict the velocities of crack in the strongly nonlinear solids.