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Thursday, July 23, 2020 | History

3 edition of DYCAST, a finite element program for the crash analysis of structures found in the catalog.

DYCAST, a finite element program for the crash analysis of structures

DYCAST, a finite element program for the crash analysis of structures

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Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in [Washington, D.C.], [Springfield, Va .
Written in English


Edition Notes

Other titlesFinite element program for the crash analysis of structures
StatementA.B. Pifko, R. Winter, and P.L. Ogilvie
SeriesNASA contractor report -- 4040, NASA contractor report -- NASA CR-4040
ContributionsWinter, R, Ogilvie, P. L, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch
The Physical Object
FormatMicroform
Pagination1 v
ID Numbers
Open LibraryOL14985824M

1) Static analysis of plane truss and plane frame structures. 2) Free-vibration analysis of plane truss and plane frame structures. 3) Static analysis using six-degree-of-freedom triangular plane stress and plane strain finite elements. 4) Static analysis using sixteen-degree-of-freedom rectangular plate finite elements in by: crash simulation of composite aircraft structures. 1 Introduction For aircraft manufacturers, designing new structures requires deep investments covering the different phases of the development, including the design, the prototyping and .

The capabilities of the ACTION finite element computer program (ref. 5) are similar to those of DYCAST, described in the next section. Both material and geometric nonlineari ti es are handled by ACTION in a manner similar to DYCAST. The element library is also comparable to that of DYCAST. The difference between ACTION and DYCAST lies in the. Finite Element Analysis (FEA) is a powerful tool that essentially divides a complex structure up into many small elements, where for each the stresses and deformations can be solved for using known equations of elasticity.

  A mathematical model for crash simulation of aircraft structures--built up from beams, stringers, and skin panels--is being developed in the form of a finite element, large displacement elastic-plastic computer code called DYCAST. As a preliminary exercise, the code was applied to simulate a low-speCited by: Description: From the fundamentals of impact mechanics and biomechanics to modern analysis and design techniques in impact energy management and occupant protection this book provides an overview of the application of nonlinear finite elements, conceptual modeling and multibody procedures, impact biomechanics, injury mechanisms, occupant mathematical modeling, and .


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DYCAST, a finite element program for the crash analysis of structures Download PDF EPUB FB2

Corpus ID: DYCAST: A finite element program for the crash analysis of structures @inproceedings{PifkoDYCASTAF, title={DYCAST: A finite element program for the crash analysis of structures}, author={A.

Get this from a library. DYCAST, a finite element program for the crash analysis of structures. [A Pifko; R Winter; P L Ogilvie; United States.

National Aeronautics and Space Administration. Scientific and Technical Information Branch.]. DYCAST is a nonlinear structural dynamic finite element computer code developed for crash simulation.

The element library contains stringers, beams, membrane skin triangles, plate bending triangles and spring elements. Changing stiffnesses in the structure are accounted for by plasticity and very large : P. Ogilvie, A.

Pifko and R. Winter. DYCAST, a finite element program for the crash analysis of structures / By A. Pifko, P. Ogilvie, R. Winter, Grumman Aerospace Corporation., United States. National Aeronautics and Space Administration. and Langley Research Center. Usage of DYCAST for the crash simulations Theory and application of finite element analysis to structural crash simulation of aircraft type structures was reported in Rcfs.

[11,17], and more recently, automobile barrier impact analyses have been by: Theory and application of finite element analysis to structural crash simulation would be to redesign the front end to allow a greater stroking distance in the energy absorbing structure, thereby reducing the internal loads and the average acceleration levels, while dissipating the same by: DYCAST DYCAST (llinamic Crash Analysis of Structures) is developed at the Grumman Aerospace Corporation (GAC), Bethpage.

DYCAST is an updated Lagrangian finite element program and an outgrowth of the PLANS system of finite element programs for static nonlinear structural : Wem Wim Bruijs. The purpose of a crash analysis is to see how the car will behave in a frontal or sideways collision.

Crashworthiness simulation is one typical area of application of Finite-Element Analysis (FEA). This is an area in which non-linear Finite Element simulations are Cited by: 5. Vehicle crash is a highly nonlinear transient dynamics phenomenon. The purpose of a crash analysis is to see how the car will behave in a frontal or sideways collision.

Crashworthiness simulation is one typical area of application of Finite-Element Analysis (FEA). This is an area in which non-linear Finite Element simulations are particularly.

The second book in the Easy Money trilogy discusses how the global financial system evolved in the aftermath of the First World War and how that finally led to the dot-com crash in the United States, in the early s.

It gives an overview of how in the aftermath of the First World War, Europe was in major trouble. The model developed for the purposes of this study was created with PLAXIS 3D which is a finite element software that has been developed especially for the analysis of deformation and stability in geotechnical engineering projects.

PLAXIS uses node tetrahedral elements for soil layers and 6-node plate elements. Plate. produce finite element models of structures which match measured dynamic data. Two new types of updating parameters are introduced in this thesis which allow the effects of loading to be accounted for in a finite element model.

The parameters are shown to be suitable for implementation in the popular sensitivity based approach to Size: 3MB. Based on the dynamic stress analysis of tower members under the strong wind, tower collapse procedure is simulated by finite element method.

Finite element method together with material nonlinearity, large [Show full abstract] deformation, contact, etc, is adopted to model the accident transmission : Dhananjay Thombare. FOREWORD This report describes the DYCAST computer program. DYCAST (DYnamic Crash Analysis of Structures) is a finite element program developed for structural crash simulation.

As such it has as its basis the capability to perform nonlinear structural dynamic finite element analysis. A generic finite element library written in C++ with interfaces for Python, Matlab and Scilab.

It focuses on modeling of contact mechanics and discontinuities (e.g. cracks). General purpose computation software.

Linux, Mac OS X, Windows, Raspbian, Online service. from this study as well as those from DYCAST are presented in the paper. DYCAST FORMULATION DYCAST is a finite element program for the nonlinear transient dynamic analysis of structures with particular emphasis on crashworthiness Size: 1MB.

Quadratic element Cubic element-Field quantity is assumed to be a polynomial over an element. (which is not true) True deformation-Geometry is simplified.

Domain Approximated domain FEM Linear element FEM-Use very simple integration techniques (Gauss Quadrature) x f(x)-1 1 1 1 11 Area: () 33 fxdx f f.

Partial Contents: Laterally Compressed Metal Tubes as Impact Energy Absorbers; The Static Approach to Plastic Collapse and Energy Dissipation in Some Thin-walled Steel Structures; Crushing Behaviour of Plate Intersections; Energy Absorption by Structural Collapse; Axial Crushing of Fibre Reinforced Composite Tubes; Impact Scalability of Plated Steel Structures.

Finite Elements - A Crash Course Mats G Larson [email protected] Basic data structures of a triangulation 1. A set of nodes P = fpig (the triangle vertices) Finite Elements Finite elements are obtained by replacing H1 0 by Vh.

Finite Element. A finite element model of the wet filament winding process was developed. In particular, a general purpose software for finite element analysis was used to. Finite Element Analysis: A Powerful Tool for Structures In today's world of high-end computers, the finite element method has emerged as a powerful analysis tool for structural applications.

The method involves simulating the structure's behavior by building a computer model and breaking down the structure into an assembly of finite-sized elements.The main features of the book include: application of graph theory for efficient analysis; extension of the force method to finite element analysis; application of meta-heuristic algorithms to ordering and decomposition (sparse matrix technology); efficient use of symmetry and regularity in the force method; and simultaneous analysis and design.This paper provides an overview of Finite Element (FE) analysis of motor vehicle crashworthiness and occupant protection technology for frontal crash simulation.

Particular attention is devoted to the development of an integrated FE model combining the vehicle structure, interior components, dummy and air bag in one by: 9.