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VISUAL CRASH STUDIO

Visual Crash Studio (VCS) is an unique tool for the pre-design stage of product development. In order to optimally use the software capabilities it is important fully understand the specificity of VCS usage, its characteristic workflow and its application in the overall design process.

Visual Crash Studio environment enables constant verification of the model. The advantage of VCS application is the fact that calculation of a solution can be performed at each modelling stage. First calculations start at the cross section level. Subsequent calculation can be performed as each part of the structure is created. In case of simple structure calculation time should not exceed several dozen of seconds. If the structure is advanced the time required for calculation should not exceed several minutes. This way a final simulation is performed for verified and complete structure.

The approach of parallel modelling and analysis is optimal for the VCS workflow. Thanks to the very short calculation time (seconds to minutes compared to hours in FE solvers) this design process is very efficient. In consequence, VCS is recommended to be used in the pre-design stage of product development, where possibility of fast verifications and adjustments of the designed construction are essential.

As software designed for the pre-design stage, VCS does not compete with FE methodology solvers but can and should be used as their complement. VCS gives the possibility to develop, verify and optimize a construction concept with accurate crash analysis. Basing on this concept a detailed construction can be created, and additional detailed calculations conducted (with the use of FE methodology).

Using VCS in the pre-design stage of a project gives the benefit of avoiding time and cost–consuming major modifications is later stages of product development.

VCS 4.0 - Main Features

VCS Main features

VCS Introduction video


CRASH CALCULATIONS IN SECONDS? – IT’S POSSIBLE!


Constantly growing crash safety requirements enforce implementation of various strategies in vehicle body design.

Test procedures involve laboratory experiments as well as numerical simulations.

Process of structure development is time and cost consuming, therefore more effective procedures are sought.

Possibility of studying the influence of various parameters on crushing response is a tempting perspective.

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The Macro Element Method (MEM) fits in optimization purposes perfectly and can be treated as a complementation to the finite element methods. Macro element approach is especially useful in the field of large deformations of thin walled members made of variety of ductile isotropic materials. Implementation of MEM gives the highest efficiency at the early stages of vehicle development.

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Macro Element Method is based on simplified modeling. The concept of Super Folding Element at the cross sectional level and Super Beam Element in case of a 3D structure, enable creation of simplified models of variety of design concepts.

Most significant for the optimization purpose is the possibility of easy modification of a simplified structure (coordinates of points, plate thickness, assigned material).

Calculation time, which does not exceed several seconds in case of various cross sections and several minutes in case of complex beam structures, guaranties that numerous analysis of an optimization loop will be performed in a reasonable amount of time.

Any optimization “arrangement” including input data modifier tool + solver + output collection + results visualization can be combined with a MEM solver without a great effort thanks to its transparent file format.

Last but not least, the results of Macro Element calculations are comparable with the ones received in laboratory test and FE calculations. Additionally, what is highly important in optimization, MEM calculation process comes with low computation cost.


USE CASE EXAMPLE – B PILLAR


One of the practical examples presents strength testing of B-Pillar, where bending response of the assembly is tested.

One of the greatest challenges faced by the engineers is to reduce mass of the part and at the same time fulfil crash requirements.

MEM can be implemented in such design process on two levels.

On the level of cross sections bending moment analysis for various materials and geometry variants can be performed.

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FE model

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MEM model

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The simplicity of the model enables quick and easy modification of the geometry. Each plate of a cross section can be defined individually which enables testing of various thicknesses and materials.

The time of calculation at 2D level usually takes less than a fraction of second on standard PC.

As a result several blocks of results are available including bending response of the analyzed cross section.

On the level of a 3D structure, MEM allows definition of simplified B-Pillar beam model build of nodes and Super Beam Elements. This gives the possibility to test various geometrical and material specifications in many configurations. The modeling procedure can be conducted semi-automatically using the import from FE tool.
The initial and boundary conditions are defined in form of kinematic constraints assigned to the nodes. The presented B-Pillar structure consists of 11 cross sections, 14 Nodes and 13 Super Beam Elements.

In case of presented load case (350 ms of simulation time, 87 500 time steps) calculations take only 6 seconds.

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For downloads please visit Downloads section

Detailed information about Macro Element Methodology is available in Crash Academy’s Publications section

What's new

The company Impact Design Europe is glad to inform you about the development of Visual Crash Studio.

Below please find latest information about novelties and improvements introduced into our software.

Please feel welcome to share with us all your comments and suggestions. We will try to meet your expectations in the future versions of VCS software.

Agata Abramowicz Sokoll- Impact Design Europe
contact: support@impactdesign.pl

VCS 4.0

In the newest version of Visual Crash Studio, VCS 4.0 available since spring 2017, you will find several new functionalities improving the user friendliness of our software.

The Tool Settings window provides easy access to all functionalities and options of a selected tool. Additionally you will find handy help information.
Dynamic Engineering Assistant (DEA) provides information about all errors and inaccuracies detected in the currently opened VCS Solution.
Moreover in VCS 4.0 several improvements have been introduced to the Cross Section Editor
Additional major improvements:
– Marking Of Selected Elements
– Cross Sections Results – Curve Comparison
– Improved Import Functionalities
– “Assign Initial Velocity” Tool

(*)For more information please see: VCS Newsletters – VCS 4.0