In recent years, light weight design has been required especially in automotive industry in order to meet strict fuel emission standards as well as other features such as safety, riding comfort and maneuverability. In order to achieve it, importance of robust design which minimizes the influence of scatters from production phase is increasing. DIFFCRASH, developed by SIDACT GmbH in Germany, is a software which visualizes scatter in physical behavior by statistical analysis of multiple animation files from LS-DYNA. This poster illustrates functionalities of DIFFCRASH for scatter visualization of spring back in stamping process.
Vibration and acoustic analysis are used for various purposes such as vibration characteristics of structures and NVH performance of vehicles, indoor, outdoor noise, acoustic evaluation, prediction of structural fatigue. LSTC which is developer of LS-DYNA is working on developing functions of vibration and acoustic analysis methods. In this poster, we will introduce examples of vibration and acoustic analysis, and comparison examples with experiment in acoustic analysis.
Fluid Structure Interaction problem requires the interaction of both fluid dynamics solver and structure solver. LS-DYNA is a cutting-edge tool to simulate such multi-physics problems under its concept of "One Code Strategy". LS-DYNA has multiple methods to simulate fluids, and users can choose one of them according to their aims and physical phenomena. In order to choose an appropriate method for fluids, a typical direction will be presented in this poster by comparing the pros and cons of these methods. A tool cooling simulation for hot forming and S-ALE are introduced in detail as one of the applications and one of the fluid solvers, respectively.
Today's CAE are required many roles, a one of its is to enable to do simulation based design. There are mainly application examples with CAE, for instance, it is able to alternate the test with expensive cost or reproduce the phenomenon which is difficult to measure its accurately such as fracture and crack growth event. LSTC which is developer of LS-DYNA is working on developing the meshfree method a long times as a solution to enable to do simulation based design. From a wide range of choices, It is available a suitable features for each phenomenon. In this presentation, we'll introduce the new features of LS-DYNA R10, R11 and under development about meshfree method and the application examples which is mainly for fracture and crack growth event. And, we'll offer the guidelines which is useful to choice a right technique depending on each simulation object.
JSOL is focusing on developing simulation technology for fiber reinforced plastics. We released J-Composites, composites material analysis support tool incorporating some of efforts, in 2017. This poster will introduce one example of recent efforts related to the theme of material analysis, forming analysis and impact analysis.
Recent years, the automotive industry has been working on developing the more eco-friendly car. ZEV (Zero Emission vehicle) in the U.S. and NEV (New Energy Vehicle) in China is one of the major rules involved. We see that EV/HEV cars become further popular in Japan as well. Development high-performance and the high-quality battery is essential for achieving better EV/HEV car design. Such batteries require a broad understanding of various terms from "the molecular behavior in electrode and catalyzer" to "the safety assurance of the battery" and "the influence of electro-magnetic waves on health." The lightweight solution is still important as an approach to reduce gas emission. JSOL provides a variety of solutions that are effective for issues emerged in the development of EV/HEV cars. JSOL's solution can help to facilitate the development of EV/HEV.
LS-OPT and LS-TaSC are the optimization tools that have a high affinity for LS-DYNA, both developed by LSTC. The growing use of these tools proves the increasing demand for the optimal design with the help of CAE simulation. This poster will introduce the usage examples for these tools.
Moldex3D is one of the 3D Injection simulation software of the world's top market share. Moldex3D can analyze the whole mold including all parts, runner and cooling system in 3D and reproduce real phenomenon with high precision. In the preparation process of analysis, the wizard function supports setting of gate, runner, cooling system and so on. It is highly usable software that can be used by not only analytical experts but also parts designer and production engineer. In addition to a solver dedicated to resin flow analysis such as flow, cooling and deformation, calculation functions such as fiber orientation, stress and viscoelasticity are substantial. It is possible to visualize various phenomena in injection molding and to study countermeasures from the reproduction of defect phenomena. Moreover, it corresponds to various special molding methods, it can realize efficiency reduction of trial production number and molding condition optimization.
Visualization of mechanism and consideration of countermeasure by using finite element method are being promoted not only in design fields such as strength analysis but also in manufacturing fields such as press forming simulation. Among them, welding has not been the subject of analytical approach despite the essential joining technologies in almost all manufacturing industries. However, with the reduction of skilled workers, while making the welding process robot and stabilizing the quality, it is becoming difficult to take measures against welding deformation using the past knowledge. In JSOL, we apply the finite element analysis technology that we have cultivated to welding analysis, and package software Virfac which can calculate complicated welding phenomena requiring handling of multi physics of thermal and structural calculation with a simple operation screen has been released. We would like to introduce to you everyone how we can use analytical techniques as an aid in grasping the phenomenon of welding process becoming important in the future as factory automation progresses.
Measurement images obtained by X-ray CT and electron microscopy can be used not only for non destructive inspection purposes but also for a wide range of applications such as actual 3D model creation and internal statistical analysis. Also the use of surface data measured with a laser scanner is increasing. Simpleware software is a tool that can be used to create models using data obtained from these measuring devices and use them for various analyzes and application to FEA and feedback to development. However, due to the quality and noise of measured data, there are cases where it is determined that it is difficult to create the desired shape. Here we introduce cases where image noise can be reduced by filtering, and also modeled using interpolation tools. We will also introduce application examples of the center line and useful measurement tools.
The mission of production engineering department of manufacturing is to consider Quality, Cost and Delivery (QCD). In addition, there are a variety of requests and environmental requirements we need to respond flexibly. Application of simulation technology is rapidly expanded so as to prepare mass production efficiently in recent years. In this section, press simulation solution will be introduced such as sheet metal forming simulation software JSTAMP and related tools and forge simulation software AFDEX.
JSTAMP is an integrated forming simulation system supporting press die designing from initial to final stage. In pursuit of accuracy, speed, and ease of use, JSTAMP provides various features such as Blank/Trim line Development, Crack, Wrinkle, and Springback prediction, and springback compensation etc. Recently, applications of super high tensile strength steel and aluminums are increasing because of the high demand for lightweight and crashworthiness in automotive industry. Short leading time of die manufacturing and mass production robustness are also required to reduce cost. To help customers to solve these challenges they are facing, JSTAMP is developed under the principle of high accuracy, operation efficiency, die-design supporting, and integrated processing. This section is going to introduce some of the new features of JSTAMP/NV 2.16 which is going to be released as next version in near future.
J-Composites is a software series created to support process and process chain simulation of composite materials. It was developed with the aim of providing efficient analysis of complicated modeling, so that it can be utilized during design and development phases. It contributes to reduced development time and costs by enabling the automatic setup of a model that, with the general-purpose solver LS-DYNA, can precisely analyze material behavior at molding time. As of now, the J-Composites series consists of two tools. "Form Modeler" is a modeling tool for press forming simulation. And "Fiber Mapper" is a mapping tool which can map the result of injection molding to a structural analysis model. Going forward, we plan to develop more tools for the support of various process and process chain analysis of composite materials.
Jvision is an FEM pre- and post-processor created by JSOL. It is compatible with "LS-DYNA" and "JOH/NIKE". (We have Japanese version and English version.) Over the years, we listen to as many customer voices as possible, present efficiency and offer various functions. Currently, RPA (Robotic Process Automation) and AI (Artificial Intelligence) technologies are attracting attention, and improvement of operation efficiency (operation improvement) is one of important issues for CAE. In order to make effective use of Jvision, we will ask directly on your request and help you to create the special menu. Why not customize Jvision to special specifications for your company?
JFOLD is a software tool for simulation based airbag folding in LS-DYNA. Today's airbag deployment analysis demands accurate folding of complex designs, but this is often a very time consuming process requiring expert input. JFOLD's continuous development focuses on making the process simpler and quicker and to give the non-expert access to complex folding techniques. This is achieved through three core elements: intuitive user interface, built-in customizable tool libraries and realistic, state of the art examples and tutorials.
J-SEATdesigner is database integrated system for automotive seat design. Automotive seat design requires that H-Point estimation, crash safety performance corresponding to the several assessment, comfort performance and the physical appearance for excellent interior design. J-SEATdesigner provides several features to evaluate these performances with less effort. Thanks to the integration with database management system, the user can set up proper models for each assessment. J-SEATdesigner also provides sewing simulation set-up feature to simulate actual seat manufacturing process and VR based design evaluation with photorealistic rendering technique.
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