hesamaldin askari Avatar

hesamaldin askari

Research and Teaching Fellow

4+ years of experience in Multiscale modeling, Finite Element Method, Dislocation Dynamics, Crystal plasticity, Molecular Dynamics, ICME and programming languages. Specialties: - Failure analysis and modeling - Forming and Superplastic deformation - Deformation mechanisms and Strengthening...
See More

experience

Graduate Research Assistant  
Washington State University, August 2010 to Present

• PhD thesis title:”Superplastic deformation of Mg Alloys”. • Investigated hot and cold deformation processes on AZ31 Mg alloys under different deformation conditions through a combination of modeling and experiments. • Developed an optimized continuum dislocation density model for general single crystal deformation. This model was further improved for use in polycrystal models to study the material response, initial texture effect and final texture predictions • Coupled with VPSC model, this new approach was used to study the superplastic deformation, grain boundary sliding, long range effects, size effects and stochastic material response. • Investigated the effect of nano-precipitates on the strength of advanced high strength steels using multiscale modeling approach from molecular level to dislocation dynamics and continuum level. This project required simulations at molecular level, dislocation model and continuum mechanics level, with information being passed from lower and upper scales to the meso-scale model.

Mechanical design department Head.  
CEMAG Middle East, January 2004 to January 2008

• Responsible for plant layout design, basic and detail design of machinery and equipments, drafting supervision, manufacturing consulting and technical meetings with clients. • Design and analysis of an integrated bridge structure for belt conveyors and presented an optimized design which weight by 35% and enabled simplicity in manufacturing and installation. • Analysis and optimized design of the structural and mechanical systems (including stacking-reclaiming systems, belt conveyors, silos, cyclones, etc) for cement, oil and energy industries. • Supervision and preparation of detailed design drawings for manufacturer. • Supervision on manufacturing and installation stages.

Mechanical Equipment Designer  
Pars Sanat, January 2003 to January 2004

- Material handling systems design (including belt conveyors and bins) - FEM design of mechanical components and systems.

Lab Assistant  
ICI, January 1999 to January 2004

• Responsible for design, optimization and experiments on composite materials. • Designed and performed various characterization experiments on composite specimens and performed post manufacturing tests on composite structures. • Investigated the buckling and post-buckling of composite plates using a progressive damage modeling scheme and FEM calculations. Successfully formulated a user material subroutine (UMAT) in ABAQUS to model the material response and damage of the laminates due to loading condition. • Designed a new composite guardrail with the ability to improve road safety. The procedure was to model the crash test using ANSYS LS-Dyna and predict the safety of the passengers according to the NHTSA standards to come up with the optimum design parameters of the guardrail profile.

education

Washington State University  
Phd, Mechanical Engineering, Jan, 2009 to Jan, 2013


Iran university of science and technology  
Masters, Aerospace Engineering, Jan, 2005 to Jan, 2009


Iran university of science and technology  
BS, Mechanical Engineering, Jan, 1999 to Jan, 2004


projects

Superplastic deformation of Magnesium alloys  by  Hesam Askari    
August, 2010 - Present

Strengthening mechanisms of advanced high strength steels  by  Hesam Askari    
August, 2009 - Present