In this paper, preliminary results from a numerical study undertaken to study abrasive wear of tillage tools by soil particles are presented. The wear process is modeled as a single sand particle scratching at a prescribed speed on the surface of a tillage tool.
The study presented that simulations agree favorably with the test results and produce higher fidelity solutions than traditional analytical or empirical blast models. The work is shown that Abaqus/Explicit can be used to accurately predict the response of a structure subjected to a near-field blast event with specific application to underbelly blast events on vehicles.
The presented work depicts results of a two-scale approach to the problem of damage and failure prediction on laminated composite structures.This work shows results of the application of the most commonly used micromechanical failure criteria applied for unidirectional composites.
Optimization and Flowchart Control in the Industry Process using Abaqus, CATIA, Moldflow with Isight Integration -2012Submitted by SIMULIA on Mon, 2012-09-24 08:34.
This study will be shown how to perform this integration with Isight as a manager of several different solvers and how all work together. The key aspect of the optimization process is the ability to integrate different analysis models such as: injection, structural, thermal, modal and etc.
This study shows a plug-in for Abaqus/CAE that helps the user to define a tunneling, excavation and temporary structures, with support facility and other geotechnical analysis. The paper explores the steps to define a geotechnical analysis and Abaqus/CAE capabilities. It also includes two examples of the plugin usage: a tunnel and a retaining wall.
Computational Study of Cortical Bone Screw Pullout using the Extended Finite Element Method (XFEM) - 2012Submitted by SIMULIA on Fri, 2012-09-21 15:34.
In this study, using a UDMGINI subroutine, stress components relative to a predefined osteon orientation were computed and an anisotropic damage criterion was used to determine damage initiation and to predict crack propagation.
Evaluate Medical Device Design Robustness by Combining Statistical and Probabilistic Tools with Finite Element Analysis - 2012Submitted by SIMULIA on Fri, 2012-09-21 15:32.
In this study, FEA using Abaqus is combined with statistical and probabilistic analysis using Isight to demonstrate how these techniques work together to evaluate the robustness of medical device designs.
This paper presents helical buckling analyses are performed primarily to determine the critical effective axial load at which the inner pipe of a pipe-in-pipe (PiP) system snaps into a sinusoidal or helical buckling deformation mode.
The work presented demonstrates how Isight may be used to drive STAR-CCM+ and CATIA V5 for parametric optimization. A key requirement from the OEM was to remove time-consuming manual iterations from the design process and this example case was setup to demonstrate the automatic optimization process using their existing design and analysis tools.
This study allows mechanical engineering models to be used in place of legacy constructive solid geometry descriptions, which are far less sophisticated. This capability also allows for the seamless integration of radiation transport calculations with analysis of the resulting thermal and mechanical effects on materials.
The objective of the present study was to develop and validate an explicit FE model of the lumbosacral spine and the FSU L4-L5 using patient-specific in vitro data and to evaluate load-deflection characteristics, contact mechanics and efficiency of the FSU. It is also to create a probabilistic model to efficiently predict the performance of the FSU by incorporating disc and ligament material variability.
The application of the CEL method significantly enhances the capability of the compaction model for simulating multiple machine passes on level ground and slopes, traction behavior under large wheel slip, as well as blade dozing operations. It includes also some application examples for optimizing the design of a new generation of landfill compactors.
This study consists of an Isight application with the aim of automation and optimization of a structural design process of the SAR Plate Assembly. The multiobjective optimization problem that regards this specific helicopter component is handled through the use of 4 different genetic algorithms.
Numerical Model of the Structural Behavior of Energy Disipators, Based on Buckling Restrained Braces - 2012Submitted by SIMULIA on Fri, 2012-09-21 15:13.
This article presents a numerical model of structural behavior of buckling restrained braces for the seismic protection of buildings. This design provides slender braces, which consequently, would buckle when shortened;conversely, this buckling is prevented by embedding the core in a stockier casing.
The Dynamic Response and Evaluation of a Flare Storage Container during Slow Cook-off using Abaqus Explicit – CEL - 2012Submitted by SIMULIA on Fri, 2012-09-21 15:08.
In the case of accidental ignition, ammunition containers are designed to fail in a way that minimizes danger to nearby personnel. In the constant effort to improve the performance and safety of such containers, extensive experimental testing is required to assess new or modified designs.
The goal of this work was to simulate both the flow in a rocket engine nozzle and the resulting flow-induced transient loads on the nozzle. This unsteady nozzle flow results in structural dynamic excitation, which contributes not only to nozzle stress and deformation but also to the dynamic loads that are transmitted to the rest of the engine.
This study demonstrates how to arrive at optimum
values of forming process parameters viz. blank size and blank holding force. An Abaqus based stamping process template has been developed with an objective to achieve desired quality of deep-drawn components.
This paper will discuss the question on the interaction forces between the human heart and the valvular prosthesis to illustrate how the core issues are dealt with in the biomedical device numerical simulation practice.
In this study, the analysis parameters have been investigated and a correlation with physical test results has been set. This test is much more important for a light commercial vehicle (LCV) because LCV has bigger roof area, more straight style and as a result of these two properties it has heavier roof panel than the other vehicle.
In this study finite element computations are conducted using Abaqus to simulate indentation of transversely isotropic materials. Indentation simulation is carried out both perpendicular and parallel to the plane of isotropy using a 70.3 degree cone half-angle indenter.
This presentation demonstrate how all of the experimentally observed behaviors of this important material can be accurately simulated using Abaqus. Particular emphasis will be placed on the material model
selection and calibration.
Structural Optimization of a Transversal Rolling Mill Component to Improve Flexional Stiffness - 2012Submitted by SIMULIA on Fri, 2012-09-21 13:50.
The structural component investigated is a roll mill bar which sustain a plug for atransversal rolling of steel pipes. The improvement of the stiffness of this component is the target of the simulation to achieve the desired flexional displacement. An optimization tool is used to achieve the target in a proper and fast way.
In this paper we identify two components as candidates for weight reduction. In order to achieve this goal without sacrificing the current performance of these components we use ATOM optimization software
within Abaqus environment.
Development of Realistic Simulation Techniques to Predict Cure-Induced Microcracking in 3D Woven Composites - 2012Submitted by SIMULIA on Fri, 2012-09-21 13:41.
The main goal of this study is to improve the understanding of cure-induced microcracking through the development of realistic numerical models validated with experimental data. Specifically, microcracking predictions of unit cell FEA models of two different fiber architectures are compared with results of micro-computed tomography scans of actual panels with the same fiber architectures.
Incremental Finite Element Model for Component Interaction Investigation of a Full-Depth Deck Panel System - 2012Submitted by SIMULIA on Fri, 2012-09-21 13:37.
This paper presents use of contact simulation and *MODEL CHANGE features in Abaqus to simulate the construction process of the 23-degree skew Parkview Bridge for design verification and assessing durability of the structural system.