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Composite Sports Car Body Design

KTM Technologies quickly and reliably designs a composite sports car using ANSYS technology. KTM Technologies GmbH, Salzburg, Austria The use of composites is rapidly growing across many industries, fostering the need for new design, analysis, and optimization technologies. Every industry feels increasing pressure to launch breakthrough products that outperform competitors and meet market needs. For many design applications that require strong, yet lightweight materials, layered composites are ideal. Even so, faster, more frequent product introductions and new technologies cannot compromise ultimate product quality, reliability, and speed to market.

Posted in: Mechanical Components, Software, Briefs

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Simulation and Visualization of Elastodynamics in Time- Evolving Generalized Curvilinear Coordinates

Deforming grids and stresses can be visualized as the solution proceeds in time. Ames Research Center, Moffett Field, California This innovation unifies an earlier innovation and a new solution method based on finite differences to simulate structural dynamic phenomena over time-varying grids in generalized curvilinear coordinates. The methodology is based on physics-based first principles partial differential equations of elastodynamics in the space-time domain. It provides a powerful, yet simple methodology to compute structural dynamic variables of interest such as stresses over an entire grid mapped over or inside a given body of interest directly in the time domain. The grid can be allowed to deform in time as the solution evolves. The simulation (deforming grids and stresses) can be visualized as the solution proceeds in time; the simulation can be suspended at any point in time based on the visualization of the state of the system, and the simulation can be resumed/terminated altogether as the evolving solution proceeds within/outside the expectation bounds dictated by physics. The attractiveness of the innovation lies in the intuitiveness of the approach where the physical variables such as stresses and the displacements can be visualized directly in space and time as the simulation proceeds.

Posted in: Information Sciences, Electronics & Computers, Software, Briefs

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3D Finite Element Model of Magnetic Mirror and Nano Antenna

Simulations are considerably cheaper and faster than the fabrication process. Goddard Space Flight Center, Greenbelt, Maryland A 3D finite element mathematical model has been developed for representing a behavior of a magnetic mirror and nano antenna subject to polarized incident light. This model represents the fourth generation of magnetic mirror with the goal of suppressing the diffraction.

Posted in: Information Sciences, Electronics & Computers, Software, Briefs

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Toolbox for Modeling and Analysis of Thermodynamic Systems (T-MATS)

Tools are included to make model creation easier than before. John H. Glenn Research Center, Cleveland, Ohio T-MATS is an open-source Simulink library for use in modeling and simulation of thermodynamic systems. It provides a user friendly graphical MATLAB/Simulink-compatible toolbox along with tools to increase ease of model creation. It also includes a generic nonlinear solver that allows the designer to ensure that all conservation equations are respected at every time step.

Posted in: Information Sciences, Electronics & Computers, Software, Briefs

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Advanced Numerical Tools for Design and Analysis of In-Space Valve and Feed Systems

Marshall Space Flight Center, Alabama A high-fidelity numerical simulation software (CRUNCH CFD®) predicts the transient performance of flight valve designs, provides design support by supplementing current empirical rules, and diagnoses system anomalies. Currently, transient analysis of valves is difficult to simulate because of the requirement to dynamically deform the grid due to the valve motion. For complex, transient problems such as engine startup or shutdown that also involve dynamic sealing of fluid flow paths due to valve/solid surface contact, it becomes nearly impossible to deform the grid in an automated fashion.

Posted in: Information Sciences, Electronics & Computers, Software, Briefs

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Method for Visualization of Analog Signals

The method can be used to identify changes or faults in a system. Ames Research Center, Moffett Field, California In this innovation, a method makes use of a new technique for describing analog information based on the roots of polynomial functions of infinite degree. Monotonic analog signals are transformed into characters that are fused into a two-dimensional composite visualization of the generating signal information. Examples of such signals include those arising from sensors, electronic equipment, or mechanical devices. Traditionally, such information is displayed by indicators, warning lights, or dials that discard the original content and temporal evolution of the source. Hence, they are not invertible back to the original signal for further examination.

Posted in: Electronics & Computers, Software, Briefs

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Time-Multiplexed Pipelined FFT Implementation

Goddard Space Flight Center, Greenbelt, Maryland A fast Fourier transform (FFT) was developed as part of the Soil-Moisture Active/Passive (SMAP) project. The FFT was created on 16-bit data arriving at a rate of 48 MHz to run on a resource-constrained, space-grade field programmable gate array (FPGA).

Posted in: Electronics & Computers, Software, Briefs

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