Xiaoshi Stone Jin

• Served as a technical lead in an Injection Molding Core Team for multiple projects. • Submitted two Invention Disclosures (ID) and four Restricted Technical Reports (Corning Internal RTR) • Introduced DIGIMAT for anisotropic and nonlinear composite material property study • Developed codes for material characteristics based on material data collected and process simulations

Work on auto company projects for part design improvement and manufacturability, and collaborated with cross-functional team members on various aspects of design, simulation as well as research on material properties and validations Achievements: • Simulation and design changes on a number of plastics parts for GM, Ford, and some other companies that use Celanese materials • Successfully passed exam for Autodesk Moldflow Expert Level Certification --- Moldflow Gold Certified. • Coded scripts for regression testing of Celanese materials automatically, and report generating. • Proposed a new rheometric approach for measuring viscosity for LFT, LCP and other materials more accurately, especially on pressure dependency

Using ASP.NET / WebGL / Node.js to build a cloud based CAE platform, and using Lattice Boltzmann Method to explore its broader applications in multi-phase flows.

Lead a team to work on auto company research projects utilizing ESI simulation tools. Lead a composite group providing technical sales support and customer training. Developed training materials and customer training classes. Lead engineer for a few other research projects, such as wind turbine repair, autoclave process simulation, process simulations for manufacturing ceramic matrix composites. Achievements: Prepared US-CAR virtual material models to simulate manufacturing process of composite front bumper and crush-cans. Published paper presented at the ACCE in 2016. Utilized simulation tools to calculate material properties, simulate draping and RTM processes for Department of Energy funded GM Integrated Composites Manufacturing Engineering projects. Co-authored a paper published in ACCE 2016 on this project work. Working with colleagues on a UL project for wind turbine repair assessment, and co-authored a paper on the work. Built simulation models for Hanwha's project on composite bumper crash test. Utilized Pam-Crash / LS-DYNA to cross-check the composite bumper crash simulations and compared the simulation results with the real test. Developed simulation software training materials for Honda America including technical benchmark cases. Utilizing simulation tools for Hexion project on a carbon fiber composite car-roof, especially on preforming / draping of different layups to predict possible wrinkles, and connecting to RTM simulations. Lay-flat / layout optimization of composite preform pieces for CSP battery box project based on fiber orientation requirements and draping simulations of different layup designs.

Lead two research and development teams building simulation tools of long fiber thermoplastics and a mold stress and fatigue analysis tool for injection molds. Achievements: Implemented fiber breakage PDE models for Department of Energy funded long fiber thermoplastics and long carbon fiber thermoplastics projects. Reduced fiber breakage model memory requirements by 70% by developing / implementing a POD-based Reduced Order Modeling (ROM) for Long Carbon Fiber Breakage Model. Initiated a R&D project in responding to customers requested prediction tool to analyze early mold failures. Lead a team developing a Mold Fatigue tool inside Autodesk Simulation Moldflow Insight to analyze mold stress and fatigue. Provided lecture on mold stress and fatigue analysis at the Autodesk University in 2012, and presented at the NAFEMS World Congress in 2013. Joined Autodesk Helius Composites project for mapping composite properties to ABAQUS and ANSYS. Provided the basic libraries for anisotropic material modeing for mechanical properties of fiber-filled composites and point-based mapping Promoted product features and technical advances by presenting technical papers at multiple major technical and user conferences.

Directed a R&D group for Moldflow solver technology development and improvement activities. Coordinated with QA, Support, GUI, Material Labs, Documentation, UX and executive management for technology development. leading and driving projects, reviewed proposals and managed code merge of new and improved features into the main production line. Provided technical consulting for basic modules. Achievements: Integrated core technologies from Moldflow and C-MOLD after the merger of the two companies. Managed the integration and improvement of Moldflow product suites utilizing the best features from both companies products. Designed a bridging library for Moldflow and C-MOLD mesh models for a unified solver set. Led team tasked with improving residual stress calculation model for fiber-filled polymer composites. Implemented a Corrected Residual In-Mold Stress (CRIMS) model and a correlation procedure to improve warp prediction and CRIMS measurement. Developed Moldflow Interfaces to pass fiber-filled polymer composite and residual stress data to structural analysis packages including ABAQUS, ANSYS, LS-DYNA and NASTRAN. Built the basic modules and API for Moldflow Structural Alliances (MSA) and a later product Autodesk Helius Composites (AHC) to meet customer requirements. Served as a control master for data-driven GUI design to bridge between GUI development / designs and individual / integrated solver features corresponding to various processes.

Provided Research and Development for solver technologies including tech-transferring, design modules and process estimates. Worked on external projects including a NIST TED (thermoplastics engineering design) for short fiber-filled polymer composites project with GM and GE, and a 3D Viscoelastic flow project with Los-Alamos National Laboratory. Achievements: Designed and implemented an optimization scheme for polymer flow runner balancing to optimize feed system. Performed process-induced residual stress calculations by converting thermo-rheologically simple model from FORTRAN code model into C code, and developed an instant-freeze residual stress model for fiber-filled polymer composites. Implemented Tandon-Weng and Advani-Tucker orientation averaging model for fiber-filled composites to calculate anisotropic mechanical properties. Developed structure analysis to predict warpage for injection molded fiber-filled polymer composites as a major product feature for C-MOLD and Moldflow software. Served in Quick Solution Team developing Quick tools for quick fill, transient cooling, and optimization tools for process setup, gate location and runner systems for C-MOLD software. Worked with Los Alamos National Laboratory on 3D Viscoelastic flow project. Served as C-MOLD representative to develop 3D flow code with VE models.

Mainly research on computational fluid dynamics with hydro-elastic-plastic model, and assistant advisor for graduate students Presented my first conference paper in an international computational physics conference: X. Jin and K. Zhang, Proceedings of the International Conference on Computational Physics, 424-429, 1988

Continue my research work on hydrodynamic elasto-plastic flows Research activity with other research institutes Helping professor in some daily activities

Runner system optimization for polymer flow in injection molding simulation, developed a runner balancing scheme with an optimality criterion. The work was carried out further and extended to a design optimization tool for multi-gate and multi-cavity molding system in C-MOLD. The following paper has some details: X. Jin, Runner System Design Optimization for Multigated and Multicavity Injection Molds. Paper presented at CAE and Related Innovations for Polymer Processing, in Orlando, Florida, 2000

Parabolic Navier-Stokes (PNS) approach is an efficient way to calculate 3D flow field in its transverse 2D calculation domain of a dominated flow direction. The key feature is the PNS formulation, Jacobian derivatives, and Osher scheme. 3DNS is a full scale three dimensional code for Reynolds Averaged Navier-Stokes equation for turbulent flows. The following paper has more details. T. Birch, N. Qin, and X. Jin, Computation of supersonic viscous flows around a slender body at incidence. AIAA 12th Applied Aerodynamic Conference, 1994, AIAA paper 94- 1938.

PhD dissertation: Developments on Computer Simulation of Injection Moulding -- modelling with boundary element and finite element methods Abstract: Several mathematical models which are based mainly on the boundary integral equations are developed for computer simulation of injection moulding. The models are then implemented for the viscous flows in the filling stage, and the temperature field during the cooling stage of the process. Starting with the modelling of nonisothermal laminar flow in ducts, the dependence of viscosity on the pressure, temperature and shear rate is taken into account,... http://search.proquest.com.proxy.library.cornell.edu/docview/301526561?pq-origsite=summon

Computational Elasto-plasto-hydrodynamics with finite difference method Experimental activities for explosive metal cladding for metal composites, and explosive metal forming Courses: Compressible Fluid Dynamics, Structural Optimization, Metallurgy, Elasto-plastic dynamics, Large deformation analysis, Tensor Analysis, etc. Thesis: Numerical Calculation of High Velocity Impact

First paper published on Discrete Variable Optimum Design of Structural Columns for a Single-Story Workshop