Impact 프로그램은 Explicit Dynamic 유한요소해석에 이용할 수 있습니다.
예를 들면 차량충돌이나 금속박판 펀치 공정과 같이 매우 짧은 시간 동안에 변화하는 거동을 예측하는 데 이용할 수 있습니다. 이러한 해석은 대변형 및 고속 운동에 대한 영향을 고려해야하며, 일반 유한요소해석 프로그램에서는 답을 얻기가 어렵습니다.
Impact는 또한 Pre/Post프로그램인 GiD 와 통합하여 편리하게 사용할 수 있으며, 자세한 사항은 첨부 자료를 참고하시기 바랍니다.
GiD 에 대한 자료는 별도로 준비하여 올리겠습니다.
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Impact is an open source finite element program suite which can be used to predict most dynamic events such as car crashes or metal sheet punch operations. They usually involve large deformations and high velocities.
Impact_and_GiD_integration_paper.pdfSimulations are made on a virtual three dimensional model which can be created with a pre-processor or with the built-in Fembic language. Results are viewed in a post-processor.
Impact is designed to interface with the included pre- and postprocessor by default, but there are also interfaces available for more advanced pre-and postprocessors such as GiD or Gmsh. Impact also has rudamentary support for Nastran file format.
Development is made by a team of volunteers from all over the world with the aim of creating a clean and compact program which is simple to understand and use.
Impact is licensed under the Gnu Public License which makes it free to use and modify as long as you release and publish your improvements under the same license.
Impact is written in Java which means it can be run on most hardware and operating systems.
Screen Shots
Simulation of a bumper beam low speed impact test
Pressing of a cup
Plotting a curve with the built in grapher
Download & Installation
You need to install the following to get started with Impact:
- A Java Engine You can take either the Runtime environment (JRE) or the Development Kit (SDK).
- The Impact Program
Impact has built in model creation and result viewing, but there are more powerful alternatives available. Gmsh is a free pre-processor which can be used to build Impact models
Optionally, you can create models and/or view simulation results with a powerful commercial program which also has a limited free license for academic purpouse:
If you plan to run Impact on a cluster network, you will require JavaParty to be installed and functioning first.
- JavaParty home page (for documentation)
- JavaParty program version 1.09 (for download and installation)
To install Impact, just unzip the file into your home directory and enter the Impact directory. The program can be started with several different scripts depending on which version you want to run. .bat files are for Windows and .sh are for Unix based environments such as Linux, Mac-OS X, BeOs etc:
- ImpactGUI.bat / .sh - Starts the Impact GUI environment (recommended)
- ImpactGL.bat / .sh - Starts the Impact GUI with accelerated graphics
- Impact.bat / .sh - Starts only the solver or translator
- ClusterGUI.bas / .sh - Starts the GUI but on a Cluster network
- Cluster.bat / .sh - Starts solver or translator but in a Cluster network
For example, bash Impact.sh examples/Ver_01.in will start the Impact solver from command line on a Linux based system and solve examples problem Ver_01
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