The objective of this course is to provide engineers with the fundamental theoretical background on the SPH formulation, the available formulations, implementations, and the latest developments of the SPH method coupled with the Lagrangian formulation in LS-DYNA. The class will emphasize on the advantages and disadvantages of the SPH method also on which SPH formulation is suitable for various applications including fluid and solid materials. Detailed descriptions of the data required to run LS-DYNA analysis are given. Examples are used to illustrate the points made in the lectures. To address some numerical issues of SPH in low-speed material failure analysis of solids and structures, a novel particle method SPG (Smoothed Particle Galerkin) is introduced with theoretical background, features, keywords and applications.
DURATION: One day LANGUAGE: Mandarin MAIN CONTENTS: 1. History, Smoothing function (kernel), Variable Smoothing Length, Different SPH formulations 2. SPH Discretization of Continuum/Balance Equations, Total and updated Lagrangian 3. SPH thermal formulations, Thermomechanical coupling options between SPH and solids 4. Tension instability, Lagrangian and Eulerian kernel Functions, Renormalization and Consistency 5. Coupling with solids and its application in fluids 6. General features and applications (sold and fluid), keywords and use of SPH 7. Boundary conditions, Contacts, SPH/Lagrangian coupling, Thermal options, Coupling between SPH parts and between SPH and other particle methods (e.g. DEM, SPG and peridynamics) 8. LS-PREPOST: Creation of SPH models, Visualization of SPH particles 9. Details of an Example: Control cards, Material, Sections, Parts, Outputs 10. Introduction to SPG: kernel types, stabilized DNI, keyword, bond-based failure mechanism 11. SPG applications：impact and penetration, waterjet impact
INSTRUCTORS: * Jingxiao Xu Ph.D. Received his Ph.D degree of Mechanical Engineering from Northwestern University on 2004 then joined LSTC. He has been working on the meshfree methods and their applications since the day he joined LSTC. Currently he is developing and maintaining the code of the smoothed particle hydrodynamics of LS-DYNA and its’ application on high velocity impact, high explosive detonation, penetration, bird strike testing, multi-phase flows, fluid-structure interaction, thermal-structure coupling and so on.
* Youcai Wu Ph.D. Graduated from the Department of Civil and Environmental Engineering, UCLA (University of California, Los Angeles) in 2005. Joined Karagozian & Case Inc. in January 2006, focusing on advanced LS-DYNA applications in structural analysis, concrete constitutive modeling and independent development of meshfree methods. Joined LSTC in 2015, focusing on development of advanced FEM and meshfree/particle methods and their applications in the integrated analysis of manufacturing and material failure and fragmentation processes.
Course fee:
1.CNY 2000 for each day including electronic class material and lunch.
2.Not including hotel fee.
3.The traning is hosted by LSTC and Shanghai Fangkun.
4.All participates will receive a course completion certificate issued by Livermore Software Technology Corp, US office and Shanghai Fangkun.
Shanghai Fangkun Software Technology Ltd. as the domestic master distributor authorized by LSTC, is fully responsible for domestic sales, marketing, technical support and engineering consulting services of LS-DYNA. Relying on strong technical support and product development capability of LSTC, by attracting a group of top LS-DYNA application engineers to join, with integrating and managing a wide range of resources such as LS-DYNA distributors and partners in China, Shanghai Fangkun provides strong technical support services for domestic LS-DYNA users, and facilitates customers to use LS-DYNA software for product design and development more efficiently.
LS-DYNA is a highly advanced general purpose nonlinear finite element program that is capable of simulating complex real world problems. The distributed and shared memory solver provides very short turnaround time on desktop computers and clusters running under Linux, Windows, and Unix. The major development goal of Livermore Software Technology Corporation (LSTC) is to provide, through LS-DYNA, capabilities to seamlessly solve problems that require "Multi-Physics", "Multi-Processing", "Multiple Stages", "Multi-Scale".
