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White Papers

Analysis of Innovative Composite Aircraft Structures ...

Analysis of Innovative Composite Aircraft Structures

Company :3DS  Category :Avionics

A FINITE ELEMENT MODEL FOR TBC DAMAGE DETECTION AND LIFETIME PREDICTION...

Thermal Barrier Coatings (TBC) have been used for almost three decades for heat insulation in high-temperature components to increase efficiency. Reliable diagnostic techniques that are practical to implement are needed to identify the location and severity of degradation in TBCs to protect against premature TBC failure.

Company :Dassault Systems  Category :Paint/Coatings

SUPERPOSITION OF COHESIVE ELEMENTS TO ACCOUNTS FOR R-CURVE TOUGHENING IN THE FRACTURE OF COMPOSITES...

The relationships between a resistance curve (R-curve), the corresponding fracture process zone length, the shape of the traction/displacement softening law, and the propagation of fracture are examined in the context of the through-the-thickness fracture of composite laminates. A procedure that accounts for R-curve toughening mechanisms by superposing bilinear cohesive elements is proposed.

Company :Dassault Systems  Category :Aerospace Designs

STRUCTURAL DESIGNS,ANALYSIS, AND TESTING OF AN EXPANDABLE LUNAR HABITAT ...

ILC Dover, under contract by NASA Langley Research Center, and in cooperation with NASA Johnson Space Center is designing and manufacturing an expandable lunar habitat.

Company :Dassault Systems  Category :SpaceFlight, Inflatables,

FULL CYCLE STOCHASTIC ANALYSIS OF COMPOSITE STRUCTURES UNDER BUCKLING LOADS, DESIGNS & MANUFACTURING SCATTER...

Structures in general are subject to uncertainty due to manufacturing, assembly, environment of work, loads, etc … This scatter more specifically is associated for example to tolerances of thickness, position, waviness, etc, material mechanical properties distribution, layup alignment axes.

Company :Dassault Systems  Category :Aerospace Designs

PRELIMINARY DESIGN OF A COMPOSITE WING-SAIL...

An Abaqus/Standard FEA based study was carried out to develop a structural format for a wing sail used on a sailing boat, V-39 Albatross. As well as providing a novel structural solu-tion to meet a challenging set of requirements, the study has given the necessary mass properties and stiffness data required to further progress the preliminary design phase of the overall boat.

Company :Dassault Systems  Category :Composites, Fun,

MICROMECHANICS-BASED STRUCTURAL ANALYSIS (FEAMAC) AND MULTISCALE VISUALIZATION WITHIN ABAQUA/CAE ENVIRONMENT...

A unified framework is presented that enables coupled multiscale analysis of composite structures and associated graphical pre and post processing within the Abaqus/CAE environment. The recently developed, free, Finite Element Analysis - Micromechanics Analysis Code (FEAMAC) software couples NASA's Micromechanics Analysis Code with Generalized Method of Cells (MAC/GMC) with Abaqus/Standard and /Explicit to perform micromechanics based FEA such that the nonlinear composite material response at each integration point is modeled at each increment by MAC/GMC.

Company :Dassault Systems  Category : Aircraft Design,

MODELLING OF AN IMPROVEMENT DEVICE FOR A TENSION TEST MACHINE IN CRIPPLING TESTS...

The ability to accurately model welding processes in order to predict residual stresses and distortions is becoming increasingly important in the engineering industry. Abaqus can be used to model the welding process but this has been found to be considerably time consuming and requires a large number of assumptions to be made. Virtual Fabrication Technology is an analysis software suite that is designed to allow Abaqus to accurately model complex welding procedures.

Company :Dassault Systems  Category :Aerospace Manufacturing

GUIDELINES AND PARAMETER SELECTION FOR THE SIMULATION OF PROGRESSIVE DELAMINATION...

Guidelines and Parameter Selection for the Simulation of Progressive Delamination

Company :Dassault Systems  Category :Composites

X-FEM FOR ABAQUS(XFA) TOLLKIT FOR AUTOMATED CRACK ONSET AND GROWTH SIMULATIONS...

A software tool for automated crack onset and growth simulations based on the eXtended Finite Element Method (X-FEM) has been developed. For the first time, this tool is able to simulate arbitrary crack growth and composite delamination without remeshing. The automated tool is integrated with Abaqus/Standard and Abaqus/CAE via the customization interfaces.

Company :Dassault Systems  Category :Aerospace Designs
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