Tips & Tricks

How to simulate welding process with variable weld speed and Heat power ?

In real process, the user changes the velocity depending to the distance already covered or still to cover in welding process. To better reproduce the start and the end of a welding process, the velocity must be able to vary during at least these two phases as well as the heat source power. And to be more generic, this feature introduces a time dependency of the heat source velocity and its power density.

Visual-Environment Highlight of Visual-Seat: STAN Thermal Dummy

STAN is a thermal dummy to test thermal comfort and moisture management characteristics of automobile, truck, and airplane seating. This device is commercialized by Thermetrics® and some relevant information can be found here: https://thermetrics.com/products/manikin/stan/. In collaboration with Thermetrics, ESI developed a numerical model of the STAN dummy for the prediction of its thermal behavior. No humidity is managed in this version of the model. A process for the setup of the seating and the thermal simulations of the STAN dummy have been added in this version.

Visual-Environment Highlight of Visual-Seat: Sewing Simulation Guided Setup

Sewing simulations aim at assembling flat cover patterns and wrapping them around deformable foam block. This application exists in Visual-Seat for many versions as a set of toolboxes and functionalities enabling to set-up this type of input. This has been enhanced with a workflow gathering all tools and functionalities and proposing them in the right sequential order to provide some user guidance.

Visual-Environment Highlight of Visual-Seat: Foam Blocks Positioning

When assembling the different components of the seat, it may happen that the foam at rest is intersecting the frame and/or the suspensions. In order to remove those intersections, a simulation-based technique had been implemented previously by applying surface pressure on foam. Upon customer request, a new method has been added where the frame (and suspensions) can be scaled down and moved initially to retrieve progressively their size and position during simulation, when the contact with foam is active.

e-Café #2 PYFUN, PYSTOP - Programmer ses propres critères d'arrêt de calcul

Comment programmer des critères d'arrêt de calcul en Python

e-Café #1- Construire sa propre carte matière MMAT à l’aide de Visual-Crash PAM

Construire sa propre carte matière MMAT à l’aide de Visual-Crash PAM

『VPS2016にて廃止されるキーワード』

ESIでは、日々、ソルバーへ機能を追加し性能の向上を図っています。しかし、中には時代遅れとなったり、他と連携が難しくなったりする機能が出てくることがあります。

『Sensorのオフセット機能（Load定義時）』

VPS2017に追加されたSensorの新機能について紹介します。Load定義の起動トリガーとしてSensorで設定した場合、VPS2017以前ではSensorが起動した時刻におけるLoadカーブの値が参照され、計算に適用されていました。VPS2017からはSensorが起動したタイミングをLoadカーブの時刻0とし、オフセットして計算を開始することが可能となりました

『DMP計算の領域分割方法』

DMP計算（Distributed Memory Parallel、分散メモリ並列計算）では、計算モデル（メッシュ）を指定した数に領域分割（Domain Decomposition）し、計算を行います。

『Linuxのレベルについて』

VPS2016からLinuxバージョンの開発環境がRHEL5.2から6.7へ変更されています。インストールがお済みでないお客様は事前にOSレベルをご確認ください。