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Accurate material modeling for additive manufacturing


비선형 멀티 스케일 재료 및 구조 모델링 플랫폼
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최근 기업의 주요 과제는 설계에서 중량을 현저히 절감하기 위해 소재를 금속에서 복합재료로 전환하는 것입니다. 이를 위해서는 특정한 복합재의 거동을 제대로 구현할 수 있는 툴을 절대적으로 필요로 합니다. 기존에 사용해온 설계 툴들은 국부적인 복합재의 거동을 정교하게 예측할 수 없어서, 안전율 도입이나 설계 신뢰도의 저하와 같은 결과를 초래하게 됩니다.

Digimat의 기술은 복합재의 국부적인 거동을 정교하게 해석할 수 있기 때문에, 설계자가 복합재 설계 제품에 대해 100% 신뢰할 수 있게 해줍니다. 정교한 재료 모델링은 복합재가 그 기능을 100% 발휘할 수 있게 해주어, 금속재료 대비 중량 절감의 경쟁력을 극대화하고 "안전율"을 낮출 수 있게 해줍니다. Digimat의 모듈들은 기존의 FEA 솔버를 이용한 프로세스에 유기적으로 연계되어, 제조 공정과 구조해석 간의 격차를 없애줍니다.

Digimat의 기술은 전체 공급망(재료 공급업체, 부품 업체 및 OEM 업체)을 연결해주고 다음과 같은 부분을 돕습니다:
• 대규모 복합재 혼합 사용에 대한 거동의 평가 및 예측
• 고성능 복합재 부품 사용을 통한 설계 및 제조 혁신
• 적절한 복합재 부품을 통한 중량 및 비용의 최소화 및 개발 기간 단축
• 제조공정 프로세스를 반영한 해석으로 구조해석의 정확도 향상
• 재료의 시험 및 시제품 제작 감소

Digimat은 단순한 소프트웨어를 넘어서서, 성능과 제조공정 사이의 격차를 해소해주며 복합재 시장을 함께 만들어 가고 있습니다. Digimat은 엔지니어가 복합재에 대해서 미시적 및 거시적 해석을 수행할 수 있게 해, 대부분의 주류 FEA 솔버에서 재료의 기계적, 열 및 전기적 특성을 분석할 수 있게 해줍니다.

Digimat-MF is the Mean-Field homogenization module of Digimat which offers the capability to define the local material behavior as a function of the material behavior of:

  1. the matrix and inclusion phases
  2. the composite microstructure morphology (inclusions weight, shape and size)

Digimat-MF is a user-friendly micromechanical material modeling software where the user inputs the material behavior of the phases, the microstructure description and the loading applied to the resulting multi-phase material, guided by a tree data structure.

Digimat-FE is used to generate a realistic representative volume element (RVE) of large variety of material microstructures (plastics, rubbers, metals, graphite, ...) Digimat-FE allows to describe the microstructure of your composite as well as the material properties of its constituents in order to generate the FE model of the composite’s RVE.

Digimat-FE uses Abaqus/CAE to generate the microstructure mesh and the actual finite element model that is then solved with Abaqus/Standard. Model post processing is then done in Abaqus/CAE and Digimat.

Digimat-MX is a composite materials database giving access to experimental data at different strain rates, temperatures and so on. It contains Digimat material files already reverse engineered based on experimental data. This software clearly helps sharing data between stakeholders or simply internally in a company. It provides optimization tools to perform parameters identification and to reverse engineer easily and efficiently Digimat material models for a whole of material range. 

Digimat-CAE enables you to integrate Digimat and the following manufacturing tools:

  • 3D Timon
  • Autodesk Moldflow Insight
  • Moldex3D
  • REM3D
  • SigmaSoft
  • Simulayt

Digimat-CAE also allows you to integrate Digimat and the following simulation tools:

  • Abaqus/CAE, Standard & Explicit
  • ANSYS Mechanical
  • LS-DYNA, Implicit & Explicit
  • Marc
  • MSC Nastran SOL400
  • Optistruct
  • SAMCEF-Mecano

Digimat-MAP is a 3D mapping software used to transfer fiber orientation, residual stresses and temperature from the injection molding mesh to the optimal structural FEA mesh.

Digimat-MAP is fully integrated within Digimat’s multi-scale modeling process. Digimat-MAP is an accurate, efficient, robust and flexible software tool used to transfer the fiber orientation, residual stresses and temperature between dissimilar injection molding and structural analysis meshes where they can be used by Digimat-MF to FEA interfaces (ANSYS, LS-DYNA, Abaqus, PAM-CRASH, SAMCEF...) to perform state-of-the-art nonlinear multi-scale analysis. 

Digimat-HC is a multi-scale tool for the modeling of bending and in plane shear tests of sandwich panels. It is a complete, simple, accurate and flexible software tool. 

Digimat-HC takes into account the effect of the microstructure for both the core and the skins of the sandwich: 

  • For the honeycomb core, the homogenized properties are computed by Digimat-HC based on the geometry of the unit cell of the honeycomb.
  • For the skins the same choice is available. A skin is made of several layers piled up in a given order, with given orientations and thickness. Each layer can be defined at the macro or micro level. In this last case, Digimat-MF is used to compute the macroscopic stiffness properties of the layer based on the description of its microstructure.

Digimat Additive Manufacturing (AM) is a holistic simulation chain for AM, providing the unique combination of material engineering, process simulation and structural engineering to bring AM efficiency and performance to the next level.

By applying multi-scale material modeling techniques to AM of polymers (unfilled and reinforced), Digimat virtual material compounding and characterization is a key enabler to developing new materials. Users can significantly reduce physical tests, understand key parameters driving the material behavior and easily create new material systems such as lightweight lattices, opening the door to even more innovative designs.

For Additive Manufacturing to make a successful transition to a standard production technique, dedicated design and engineering tools are required. By enabling as-manufactured part performance predictions – and therefore design optimization, integrative simulation such as proposed by e-Xstream is certainly a must. By accounting for the printing direction and the effects of defects, customers are now able to perform accurate structural analyzes and bring more confidence in the design validation of Plastic and Composite parts.

Digimat-RP (Reinforced Plastics) is an easy and efficient solution for the design of fiber reinforced plastic parts. It provides engineers with a guided workflow tool that aids in the setup and streamlines the process of accurate analysis of plastic parts in a robust, fast and easy manner. It bridges the gap between injection molding and nonlinear FEA of plastic parts.

Digimat 5.0.1 supports the setup of 3D analyses with Marc, Nastran, Abaqus, Ansys, and LS-Dyna based on Moldflow, Moldex3D, Sigmasoft or Timon 3D processing results. All Digimat solution technologies are supported. Jobs can either be run and monitored on a local computer or packaged for the remote solution on a cluster.

Digimat-RP is an intuitive 3-step process that enables a part engineer (not necessarily a material expert) to do predictive analysis of plastic parts using one single process oriented product (RP) instead of the original four. RP is easy to learn and to use by “non-experts”. The experts can continue to use the general-purpose building blocks and prepare the models for easy use in RP.

Key benefits:

  • Linear & Nonlinear FEA or reinforced plastic parts with all major FEA code
  • Takes into account the effect of injection and compression molding
  • Include an extensive database of plastic properties
  • The industry standard: used and supported by all major material suppliers, Tier1 and OMEs

Digimat-VA (“Virtual Allowables”) is an efficient solution that empowers engineers to virtually compare materials before going into the lengthy physical allowables. By generating virtual allowables, engineers can now start the component design in parallel to the physical allowable campaign.

Digimat-VA is a vertical solution is developed to compute, instead of test, the behavior of composite coupons (unotched, open hole, filled hole, ...) to screen, select and compute the allowables of composite materials.

Key benefits:
  • It defines test matrix in a few clicks
  • It creates multiscale material models based on composite datasheet
  • It models batch and process variability
  • It can go beyond recommended CMH17 procedures
  • It turns a test matrix into FEA runs to obtain virtual allowables

일반적인 제품별 플랫폼 지원은 Platform Support 페이지를 참조하십시오.

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