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finite element analysis

Jie-Hua Zhao's picture

Sr. Packaging Mechanical Analyst at Apple

 Sr. Packaging Mechanical Analyst

  • Job Number: 25557504 
  • Santa Clara Valley, California, United States
  • Posted: Jan. 3, 2013
  • Weekly Hours: 40.00

Job Summary

Mechanical engineer working in the central IC packaging group.

Key Qualifications

markbathe's picture

MIT Postdoctoral Position in Finite Element Analysis for DNA nanotechnology

The Laboratory for Computational Biology and Biophysics at MIT ( is seeking a highly motivated recent PhD graduate with expertise in nonlinear finite element analysis, ideally in the area of beam theory, with a keen interest in applying this knowledge to molecular modeling of DNA-based nanostructures. The candidate must have excellent written and verbal communication skills, PhD-level training in finite element analysis, and a strong record of publishing archival journal articles.

Boundary conditions for strain based loading


I would like to perform a loading on a 2D specimen using a commercial software to obtain a stress-strain curve for  shape memory alloy (using the Ginzburg-Laundau model). To obtain the stress-strain curve following methods can be applied (refer to the figure for the nomenclature of boundaries)

(a) Displacement based loading: Constraint (Dirichlet boundary condition) the boundary 1 (in x and y direction) and load the boundary 4 in the x direction.

SIMULIA's picture

Road Restraint Systems in Abaqus - 2012

In this paper, a correlation between simulation and a full crash test is presented. In order to achieve good agreement in the correlation, several Abaqus analysis techniques are evaluated.

SIMULIA's picture

Traction Prediction of a Smooth Rigid Wheel in Soil using Coupled Eulerian-Lagrangian Analysis - 2012

The approach to modeling soil is validated by comparing predicted traction of a trolling rigid wheel to measured traction test date available in the literature. Comparison of the measured and predicted traction force shows that this approach is reasonable for predictin traction in soil.

SIMULIA's picture

Integrated Tool for Strain Extraction in Virtual Testing - 2012

This paper presents an automated approach to extract strains of aircraft structural models from widely used CAD and FE environments. The developed approach has been implemented as an integrated tool in widely used CATIA V5 and Abaqus environment. The integrated tool is a quick inexpensive and effecive technique for predicting structural strains.

SIMULIA's picture

Modeling the COnstitutive Response of Metals Under Complex Loading - 2012

In this paper, the different "built in" material models based on the isotropic, kinematic and combined istropic-kinematic hardening theories available in Abaqus/Standard are evaluated for carbon steels. The results presented in this study are expected to provide important insight to practicing engineers dealing with inelastic material characteristics.

SIMULIA's picture

Structural Topology Optimization of Multilink Suspension System Using ATOM - 2012

This study demonstrates a simulation of an integrated multilink suspension system model in
Abaqus. The model is assessed in Abaqus to determine the suspension strength and fatigue life of each individual link. This topological design optimization is executed for this multilink suspension model using ATOM to determine the critical load path, alternative concept designs, and locations for mass reduction in order to meet the performance requirements.

SIMULIA's picture

Thrust Collar Bearing Design Optimization using Isight - 2012

This paper describes the parameter-based geometrical optimization of a thrust collar bearing. The thrust bearing, for example, has to carry the whole axial force of the rotor with only minimal deformation of the collar surface over the turbocharger’s complete operating range.

SIMULIA's picture

Pipeline Dynamics with Flowing Contents in Abaqus/Standard - 2012

This paper discusses a method to address this challenge by the creation of a moving
tie constraint via the MPC user routine. This approach allows the change in weight; change in inertia and effects of fluid momentum to be correctly and conveniently captured using dynamic modelling.

SIMULIA's picture

Using the Failure Assessment Diagram Method with Fatigue Crack Growth to Determine Leak-before- Rupture - 2012

The objective of this paper is to use Abaqus/Standard to compute elastic-plastic J-integral results along the crack front. These results are then used to calculate the plastic collapse crack reference stress, especially for cases when the reference stress solution is not available for a structural component.

SIMULIA's picture

Finite Element Analysis in Offshore Geotechnics – A Thirty-Year Retrospective - 2012

The paper covers foundation performance issues and applications for pile-founded, gravity base, and deep water structures. Many of the significant applications were complemented by extensive experimental test programs to confirm or validate the analyses.

SIMULIA's picture

Stress analysis and modal analysis of the largest bearing test rig in the world - Astraios - 2012

The principal objective was to ensure reliable design of the large size bearing test rig. The main challenge here concerned the simulation method for representing the complex mechanical construction of the machine with sufficient precision in an FE model.

SIMULIA's picture

GPU Computing with Abaqus 6.11 and its Application in Oil & Gas Industry - 2012

This paper examines the performance characteristics of Abaqus 6.11 release for the latest GPU computing technology. The results are provided for finite element models with material, geometric and boundary nonlinearities relevant to current practice in the oil and gas industry, on workstation configurations, including a network of workstations.

SIMULIA's picture

Nonlinear Response of a Skin Panel Under Combined Thermal and Structural Loading - 2012

This paper presents a detailed investigation of the interactions and interplay among these parameters as evidenced by the nonlinear response of the panel. The study focuses on the nonlinear response of the skin panel under combined thermal and structural loading.

SIMULIA's picture

Using Abaqus to Model Delamination in Fiber- Reinforced Composite Materials - 2012

In this paper, a failure criterion and damage properties are investigated to model delaminations in composite parts. Different modeling techniques are explored to evaluate their ability to replicate experimental results.

SIMULIA's picture

Using Abaqus/Explicit to Link the Manufacturing Process to the Final Part Quality - 2012

The ability of the design tool to predict part quality based on manufacturing process parameters is dependent upon the mechanical behavior of the fabric reinforcements, which includes the in-plane shearing and tensile behaviors, bending stiffness and friction between contacting surfaces during the manufacturing process.

SIMULIA's picture

Parameterization and Optimization of balloon expandable Stent - 2012

This paper discusses the use of such advanced technique to solve the stent design problems. The paper would cover the essence of Finite Element Analysis, FE Model Parameterization and Optimization. Finite element modeling (FEM) and analysis with SIMULIA is used to estimate stress distribution in the stent.

SIMULIA's picture

A fundamental study of the flow past a circular cylinder using Abaqus/CFD - 2012

Taking fluid flows generated around a circular cylinder immersed in a uniform flow as an object of study. As a consequence, the study has obtained comprehensive knowledge and findings that can be applied to problems associated with fundamental estimation of the flow around the circular cylinder.

SIMULIA's picture

Lamb Wave Propagation Simulation in Smart Composite Structures - 2012

This study presents Abaqus/Standard simulation of Lamb waves in smart composite plates is investigated for detecting delamination type damage and the effect of delamination size on the structural response.

SIMULIA's picture

An innovative gear tooth analysis and evaluation technique - 2012

In this paper, an analytical example of this innovative technique will be presented on one of Nabtesco Corporation (“Nabtesco” hereinafter)’s products. To determine the most advantageous crowning, it is very important to accurately evaluate surface stress for all phases of engagement.

SIMULIA's picture

Analysis of High Cycle Fatigue Cracks in the Welds of Large Diesel Engines - 2012

In this aspect of study is investigating the recent introduction of the Extended Finite Element Method (XFEM) in Abaqus. This paper demonstrates and discusses how a real case of fatigue crack growth in a large diesel engine can be analyzed by the use of the XFEM in Abaqus.

SIMULIA's picture

A 3D Discrete Damage Modeling Methodology for Abaqus for Fatigue Damage Evaluation in Bolted Composite Joints - 2012

This study presents a discrete crack network model (DCN) for damage progression prediction has been developed by combining mesh independent matrix cracking with cohesive zone delamination models at the ply interfaces.

SIMULIA's picture

Realistic Simulation of Golf Ball Impact - 2012

This paper presents an Abaqus/Explicit simulation of the impact event when a golf club hits a golf ball. The simulation emphazies accurate material characterization and realistic model construction.

SIMULIA's picture

Modeling Component Assembly of a Bearing Using Abaqus - 2012

Simulation techniques used in present work include shrink fits at various analysis steps, model change at different analysis steps. This will demonstrate the capability of Abaqus in simulating reality of a complex bearing assembly and further stress analysis for different loading conditions.


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