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Tokura Simulation Research is a consultant company to assist application of advanced simulation technology.


11th Optimization Symposium 2014

activity  The CEO Sunao Tokura made a presentation about an application example using particle based CFD software Particleworks titled as "Optimization of Mixing Process using Particle Method MPS" at the 11th optimization symposium (OPTIS 2014) (organized by the Japan Society of Mechanical Engineering) held on December 12 and 13 in Kanazawa, Japan. Material production using mixing are used in various industries including food, pharmaceuticals, chemical products and so on. As the boundary conditions are changed by the rotation of impellers in the mixing process, it is considered that particle based methods which do not need mesh generation are suitable for such kind of problems. Mixing status of multi materials can be traced by counting the ratio of the number of particles using particle method and this technique can be applied for the optimization of many parameters in manufacturing, e.g., geometry and the number of rotation of impellers, location and geometry of inlet.

International CAE Conference 2014

activity The CEO Sunao Tokura made a presentation about the simulation technique for fuel tank sloshing problem using combination of Particleworks and LS-DYNA titled as "Application of Particle Method MPS-Based CFD Software Particleworks for Product Design" at "International CAE Conference" (organized by EnginSoft, Italy) held on October 27 and 28, 2014 in Verona. In this presentation behavior of the fuel is simulated using Particleworks, then plastic deformation of the fuel tank caused by the pressure load obtained by Particleworks simulation is computed with LS-DYNA. As EnginSoft, the organizer of the conference, is also a LS-DYNA distributor in Italy, many LS-DYNA users attended and had interest in the unique analysis technique with the combination of LS-DYNA and a particle based CFD software.

"Fundamentals and Application on Impact Engineering" has been published

activity The book contains the papers presented at the technical seminar "Impact Engineering Forum" sponsored by the Society of Material Science, Japan during the period from 2004 to 2008. Fundamental issues in impact engineering including wave propergation theory, impact experiment methods, constitutive equations, damage parameter identification etc. and the application of practical engineering problems including (impact response of reinforced concrete, numerical simulation of impact problems etc. are covered in this book. The book is useful for both the beginners and expart engineers in impact engineering field. (1st edition on May 25, 2014)

1st International Conference on Computational Engineering and Science for Safety and Environmental Problems "COMPSAFE2014"

Extreme climatic events in global scale,  huge earthquake, tsunami and similar catastrophic disasters have happened very frequently in recent years. More sophisticated cities and facilities may cause more severe human and economical damage by natural disasters. Protection technologies against natural disasters and solution on environmental problems based on computational engineering are strongly required. In this situation, 1st International Conference on Computational Engineering and Science for Safety and Environmental Problems "COMPSAFE2014" sponsored by the Japan Association for Computational Mechanics (JACM) and the Japan Society for Computational Engineering and Science (JSCES) was held in Sendai and many papers concerning natural disaster simulation, protection technologies and so on were presented. The auther made a presentation about the tsunami simulation and the vehicle damage estimation technique using a particle method MPS and impact analysis software LS-DYNA titled "Simulation Technique to Estimate Damage of Auto Body Washed Away by Flooding" using a particle method MPS and impact analysis software LS-DYNA. (April 13-16, 2014)

"Handbook on Industrial and Applied Mathematics" has been published

 "Handbook on Industrial and Applied Mathematics" compiled by The Japan Society for Industrial and Applied Mathematics has been published from Asakura Publishing (in Japanese). Wide range of fields including mathematical theories as the foundation, numerical analysis methods for fluid mechanics, fracture mechanics, optimization etc. and application in industries are comprehended in the book. The author contributes an article "Origami Engineering    Function in Structural Strengthening of Origami : Development of New Core Material - Forming Method of Core Material from Space Filling" with Prof. Hagiwara at Meiji University. Readers can review interesting many topics for computational methods and these application which are considered notably important at present. (1st edition on October 25, 2013)

"Geometrical Mathematics for Origami and Its Industrial Application" has been published


  Industrial and Applied Mathematics Series Vol.3 "Geometrical Mathematics for Origami and Its Industrial Application" has been published from Kyoritsu Shuppan. One of the traditional papercraft origami can produce light wweight 3D structure from 2D geometry. Multidisciplinary researches for mathematical investigation and industrial application of the characteristics of origami have been executed continuously. The book contains totally seven chapters from preliminary to application issues. The auther writes the chapter 7 about the forming procedure of the core material. This chapter describes the detail of the procedure and the important key points for the forming simulation. We recommend the book for the engineers who have much interist in origami and space filling techniques for industrial application. (1st edition on September 25, 2012)

12th LS-DYNA International Conference Report

  The LS-DYNA International Conference where users, distributers and developers of LS-DYNA participate has been held every two years in USA. The conference was held also in this year at the hotel near Detroit on June 4 and 5. The conference were divided into following 10 sessions;
·Automotive ·Occupant Safety ·Metal Forming
·Constitutive Modeling ·Fluid Structure Interaction/ALE
·Electromagnetic ·Optimization ·Blast/Impact 
·Simulation ·Computing Technology
The author made a presentation titled "Simulation for Forming and Performance Evaluation of Structures Developed Based on the Concept of 'ORIGAMI Engineering'" (photo). Many engineers from automotive industries and so on could have much interest in the characteristics of light weight and high strength for the products from Origami engineering. (June 4 & 5, 2012)

Collaboration with LSTC

  Livermore Software Technology Corporation (LSTC) is undoubtedly one of aggressive developer of numerical analysis software in the world. LSTC is the development company of general-purpose finite element software LS-DYNA®, one of de facto standard for impact simulation such as vehicle crash. LSTC also develop a pre and post processor LS-PREPOST® which improves efficiency to use LS-DYNA, LS-OPT® for design optimization and so on. Our company collaborates with the staffs of the development team including excellent engineers, mathematicians, and computer scientists from all over the world and propose up-to-date analysis technology for CAE engineers as simple as possible.

Dr. John O. Hallquist, the original developer of LS-
DYNA, President of LSTC, and me at the front of
the headquarters of LSTC




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