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Wednesday, July 22, 2020 | History

3 edition of Dynamic finite element predictions for Mars sample return cellular impact test #4 found in the catalog.

Dynamic finite element predictions for Mars sample return cellular impact test #4

Dynamic finite element predictions for Mars sample return cellular impact test #4

  • 298 Want to read
  • 23 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, Available from NASA Center for AeroSpace Information (CASI) in Hampton, Va, Hanover MD .
Written in English

    Subjects:
  • Impact tests.,
  • Reentry vehicles.,
  • Finite element method.,
  • Computerized simulation.

  • Edition Notes

    StatementEdwin L. Fasanella, Marcus D. Billings.
    SeriesNASA/TM -- 2001-211023., ARL-TR -- 2539., NASA technical memorandum -- 211023., ARL-TR (Aberdeen Proving Ground, Md.) -- 2539.
    ContributionsBillings, Marcus D., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL16046763M

    Explicit formulation of the finite element method is used for crash analysis, having a nonlinear transient dynamic character. Basic finite element method concepts will be presented, followed by particularities and work flow of explicit crash analysis. In the second part of the paper, a test example is used toFile Size: KB. Development of a Finite Element Model for Predicting the Impact Energy Absorbing Performance of a Composite Structure Matthew Lowell Roberts Because of their high strength-to-weight ratio, Fiber Reinforced Composite (FRC) materials are well suited for use in high performance racing applications where weight must be kept to a minimum.

    The material that is presented is independent of any particular software package, making it ideally suited to current and potential users of all commercial finite element software systems. This course is a must for all engineers aiming to use FEA as . The primary goal of Introduction to Finite Element Analysis Using SOLIDWORKS Simulation is to introduce the aspects of Finite Element Analysis (FEA) that are important to engineers and designers. Theoretical aspects of FEA are also introduced as they are needed to help better understand the operation/5(3).

    Validation of a Finite Element Analysis (FEA) Model of a Nuclear Transportation Package under Impact Conditions Chris Berry Lead Engineering Analyst 11th October Outline of presentation • Background • Good agreement between Test vs FEA • Impact deformation measurements from FEA mostly under-predicts the test. Development of the Global Finite Element Model The proposed finite element model incorporates non-standard element formulations, solution algorithms and material models. As a result, some modification of the standard finite element computer code is necessary to accommodate the model and to enhance rep-File Size: 1MB.


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Dynamic finite element predictions for Mars sample return cellular impact test #4 Download PDF EPUB FB2

Dynamic Finite Element Predictions for Mars Sample Return Cellular Impact Test #4 One concept for a Mars Sample Return EEV developed at NASA Langley Research Center, and illustrated in Figure 1, is a circular aeroshell The model for cellular impact test #4 contained grid points and elements.

Get this from a library. Dynamic finite element predictions for Mars sample return cellular impact test #4.

[Edwin L Fasanella; Marcus D Billings; Langley Research Center.]. The dynamic response of a wheel during the impact test is highly nonlinear. Nonlinear dynamic finite element with a reasonable mesh size and time step can reliably estimate the dynamic response. The finite element results are verified by comparing the calculated strains with the measured by: For future study, a heavier striker or higher impact can be used to perform the test in order to produce the rupture at ality/value: In this study, the nonlinear dynamic finite.

experimental results and theoretical ones which are obtained by simulating the impact tests using the finite element method. The ALTERNAT model gave very good predictions for displacements of dense (Dr = 75 %) sands when subjected to double impacts.

Keywords: Double impact, triaxial test, finite elements, dynamic. IntroductionFile Size: 1MB. ON FINITE ELEMENT METHODS FOR NONLINEAR DYNAMIC RESPONSE Klaus-Jürgen Bathe Massachusetts Institute of Technology Cambridge, MAU.S.A.

ABSTRACT In this paper we briefly focus on the nonlinear analysis of solids and structures when these undergo large deformations, possibly over long time durations, and perhaps subjected to fluid-File Size: KB. The impact performance of wheel is a major concern of new design wheel.

The wheel impact test is intended to evaluate the impact performance of wheel, that the striker is dropped from a specified height above the tire–wheel assembly.

In this study, nonlinear dynamic finite element is used to simulate the SAE wheel impact by:   Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor.

Impact is based on an Explicit Time stepping algorithm/5. The Finite Element Method - Linear Static and Dynamic Finite Element Analysis - Thomas J. Hughes, ISBN ; Nonlinear Finite Elements for Continua and Structures - Ted Belytschko, Wing Kam Liu, Brian Moran. ISBN ; The first book is recommended to beginners and engineers in general since it deals with most issues from a.

Dynamic explicit finite element (FE) analysis of the Charpy impact test was conducted in this study to investigate the inertial effect on the stress field ahead of the V-notch in a Charpy specimen.

The deformation behavior of the Charpy specimen and the constraint effect on the stress field in the plastic zone near the V-notch were numerically simulated using three Cited by: 5. simulation of impact test for a new product by using finite element analysis. Simulation was conducted to investigate the stress and displacement distributions during impact test.

As a result, the use of explicit finite element method to predict the performance of new products design is replacing the use of physical test.

Request PDF | The calculation of dynamic JR-Curves from the finite element analysis of a Charpy test using a rate-dependent damage model | A two-dimensional analysis of. Finite Element Analysis of Impact Damaged Honeycomb Sandwich 4 Figure 3 shows a typical plot of the nominal stress-strain behaviour for a Nomex™ sample under quasi-static through-thickness compression.

From a mechanical perspective the most notable difference between non-metallic and metallic honeycomb structure is the post. / Damage prediction for electronic package drop test using finite element method and peridynamic theory. Proceedings 59th Electronic Components and Technology Conference, ECTC pp.

(Proceedings - Electronic Components and Technology Conference).Cited by:   Honeycomb sandwich structures, composed of many regularly arranged hexagonal cores and two skins, often show excellent impact performance due to strong energy absorption ability under impact loads.

This paper studies dynamic mechanical responses of aluminum honeycomb sandwich structures. Parametric geometry modeling using UG software and finite Cited by: 1.

Explicit finite element codes have become increasingly more accessible to analysts and engineers for the solution of dynamic problems that are both non-linear and transient in nature.

The functionality of these codes has also seen rapid development, as new applications are defined and older ones better : Jacob & Goulding. Structural Dynamic Finite Element Model Based on MSC/NASTRAN code Assembled configuration nodes Used 40 modes for the flutter analysis Creating a Test Validated Structural Dynamic Finite Element Model of XA Aircraft Top Front Side Flow Side Unsteady Aerodynamic Model Based on ZAERO code elements.

peak force acquired the dynamic response is applied to the finite element model to calculate the stress and strain energy density. The total plastic work is utilized as a damage criterion to predict a wheel failure.

In this study, the nonlinear dynamic finite element analysis is performed to simulate a forged aluminium wheel during SAE impact test. DYNAMIC BEHAVIOUR OF MULTI-SPAN BEAMS UNDER MOVING LOADS. Abstract:In this paper, an exact dynamic stiffness element under the frame work of finite element approximation is presented to study the dynamic response of multi-span structures under a convoy of moving loads.

A dynamic model coupled,with a FFT algorithm is developed. The finite element models presented in this paper are used in conjunction with experimental impact tests to examine the response of the human tissue simulant blocks. The development of the finite element models enhances the understanding of the experimental models and defines areas in which future improvements can be made.

Drop test simulation is one of the important tool uses for the impact behaviour study of cellular phones. It identifies weak design points during the impact behaviour of cellular phone.

Keywords: Finite Element Analysis, LS – Dyna, Product & Broad Level, Explicit vs. Implicit. uction Due to the great popularity of handheld and portable. Toughness index is an important parameter of the quality of super-abrasive grits. In order to improve the design of the toughness index tester more reasonably and efficiently, we calculated the velocity of a steel ball in the capsule and simulated the impact process between the steel ball and the different capsule end faces with the ANSYS/: Hui Yang, Lv Bo Mai, Can Hua Lu, Yi Tong, Zhi Tao Wang, Feng Ling Zhang, Feng Lei Huang.Commerical Finite Element Program.

ABAQUS - Suite of general-purpose nonlinear finite element analysis (FEA) programs for mechanical, structural, civil, biomedical, and related engineering applications.; ADINA Finite Element System - Provides software program package for linear and nonlinear finite element analysis of structures, CFD, and fluid flows with fluid-structure .