Last edited by Megami
Wednesday, May 13, 2020 | History

2 edition of Comparison of continuous and discontinuous collisional bumpers found in the catalog.

Comparison of continuous and discontinuous collisional bumpers

Comparison of continuous and discontinuous collisional bumpers

dimensionally scaled impact experiments into single wire meshes

  • 399 Want to read
  • 21 Currently reading

Published by National Aeronautics and Space Administration, Lyndon B. Johnson Space Center, For sale by the National Technical Information Service in Houston, Texas, [Springfield, Va .
Written in English

    Subjects:
  • Structural engineering.

  • Edition Notes

    StatementFriedrich Hörz ... [et al.].
    SeriesNASA technical memorandum -- 104749.
    ContributionsHörz, Friedrich., Lyndon B. Johnson Space Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15369826M

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Comparison of continuous and discontinuous collisional bumpers Download PDF EPUB FB2

An experimental inquiry into the utility of discontinuous bumpers was conducted to investigate the collisional outcomes of impacts into single grid-like targets and to compare the results with.

An experimental inquiry into the utility of discontinuous bumpers was conducted to investigate the collisional outcomes of impacts into single grid-like targets and to compare the results with more traditional bumper designs that employ continuous sheet : Friedrich Hoerz, Mark Cintala, Thomas See, Ronald Bernhard, Frank Cardenas, William Davidson, Jerry.

Comparison of continuous and discontinuous collisional bumpers: dimensionally scaled impact experiments into single wire meshes Author: Friedrich Hörz ; Lyndon B. Johnson Space Center.

An experimental inquiry into the utility of discontinuous bumpers was conducted to investigate the collisional outcomes of impacts into single grid-like targets and to compare the results with more traditional bumper designs that employ continuous sheet : Friedrich Hoerz, Mark Cintala, Thomas See, Ronald Bernhard, Frank Cardenas, William Davidson, Jerry.

This study investigates fragmentation of small hypervelocity projectiles on combined mesh-plate (discrete-continuous) bumpers. In its “conventional” design, the protective bumper is monolithic and made of an isotropic material, typically aluminum, known for its ability to efficiently break up medium-density projectiles.

“Comparison of Continuous and Discontinuous Collisional Bumpers: Dimensional Scaled Impact Experiments into Single Wire Meshes,” NASA-TM, [3] Friedrich Hörz, Mark J. Cintala, etc., “Impact Experiments into Multiple-Mesh Targets:Concept Development of a Lightweight Collisional Bumper,” NASA-TM, Davidson and J.

Haynes, Comparison of Continuous and Discontinuous Collisional Bumpers: Dimensionally Scaled Impact Experiments into Single Wire Meshes, NASA Technical MemorandumE.L. Christiansen and J.H. Kerr, Mesh Double-Bumper Shield: A Low-Weight Alternative for Spacecraft Meteoroid and Orbital Debris Protection.

The Evolution of Bumpers: An Auto Safety Apparatus. Published on Ma Of all the features outside your car, few are more important than bumpers. Acting as a barrier against the impact from other vehicles, bumpers are essential to the survival of your car and the wellbeing of everyone inside it during a crash.

Most drivers know that. Theoretical and experimental study of a method for the protection of spacecraft from high–speed particles F., Cintala, M., See, T., et al., Comparison of continuous and discontinuous collisional bumpers: Dimensionally scaled impact experiments into single wire The problem of obtaining high velocities of bumpers and models in.

This correlation substantiates that most debris is liberated from the bumper itself. Note that our mesh bumpers typically have an mF 2. Since the Multiple-mesh bumpers: a feasibility study areal mass of t]he soda-lime glass projectiles is g/cm2, our mesh bumpers are extremely light weight.

Varying its parameters the model naturally interpolates between a continuous solid state and a discontinuous dry granular state of the material. In order to demonstrate the wide applicability of the model simulations ranging from the quasi-static uniaxial loading and shearing of a solid to the dynamic fragmentation due to explosion, impact and.

Two collisional crustal fragments are stacked onto the deformed Afro-Adriatic crusts. The southern sector of the Tyrrhenian Sea is characterized by two abyssal basins floored by oceanic crust of different ages (ca.

Ma and – Ma for the Marsili and Vavilov basins, respectively; see Serri et al., ). In this paper, the impact process is numerically investigated by comparing the results obtained from software based on a discontinuous Discrete Element Method (DEM) and a continuous Material Point Method (MPM).

() Efficient construction of unified continuous and discontinuous Galerkin formulations for the 3D Euler equations.

Journal of Computational Physics() A stabilization for three-dimensional discontinuous Galerkin discretizations applied to nonhydrostatic atmospheric simulations.

We present semi-implicit (implicit-explicit) formulations of the compressible Navier–Stokes equations (NSE) for applications in nonhydrostatic atmospheric modeling. The compressible NSE in nonhydrostatic atmospheric modeling include buoyancy terms that require special handling if one wishes to extract the Schur complement form of the linear implicit problem.

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Q1: Is there really an edition called bumper edition in the radio programmes. I understand the columnist just created such an edition to start his writing here. Choose quality replacement bumpers from industry leaders like Goodmark, Original Parts Group, and GM Performance. Bring added toughness and utility to your truck with brush, tube, or winch-mount bumpers from Westin, Smittybilt, Warn, Body Armor 4x4, and more.

Or protect your race car’s front end with competition bumpers from Allstar Performance. Bumpers Bumpers Put your pride for your truck on display with the perfect bumper. Whether you're replacing a damaged one or looking for a unique custom option, Alliance™ offers an unlimited selection of bumpers to fit every make and model of heavy-duty truck.By carefully examining the evolving characteristic of the clusters, it is verified that the transition value of α is between and for the phase transition from continuous to multiple discontinuous, and the distinctly different behaviors of the relative variance of the order parameter at and confirm the result.JSC Director's Discretionary Fund Program Annual Report Compiled by New Initiatives Office Tests demonstrated that grid bumpers fragment the hypervelocity meteoroids or debris Comparison of Continuous and Discontinuous Collisional Shields.