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  • Chaining Manufacturing Engineering and Assembly Prototyping
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    Chaining Manufacturing Engineering and Assembly Prototyping

    In the previous section, the fabrication of components including the physics of materials has been tackled. In an automotive manufacturing process, the components are then assembled in the body shop. Again, shape, material properties, and stiffness are modified in this process. Product and process architects would benefit from this information, if available at the right time. To provide this information at the right time is the goal of the Virtual Body Shop. In technical terms, distortion due to the assembly process and related assembly problems, the true point in the stress-strain space, stiffness properties, residual stresses, and remaining hardening capabilities are provided to product and process architects – at the right time.

    Areas of initial penetration

    Areas of initial penetration

    Computed distortion after unclamping

    Computed distortion after unclamping

     without forming history

    Residual stress after assembly (spot welds): without forming history

     with forming history

    Residual stress after assembly (spot welds): with forming history

    The virtual assembly process is described hereafter and illustrated with a few milestones.

    • Structural steel sheet metal parts are formed by stamping simulation,
    • Parts are positioned on fixtures,
    • Contact interference is detected between stamped geometries,
    • Clamping tools are closed,
    • Contact and distortion is updated,
    • Effects of pin locators etc. are taken into account,
    • Spot welds join components,
    • Effects of gap closing and thermal shrinkage is taken into account,
    • Contact and distortion is updated,
    • Assembly is unclamped and final distortion / residual stresses / true point in the stress-strain space are computed and made available for any virtual investigation.

    The benefits for product and process architects lie on hand:

    • Uncover positioning problems,
    • Study effects of pin locators, fixtures, clamps, welds, gaps between parts,
    • Find assembly problems and apply counter measures,
    • Save cost for prototyping and apply costly engineering only where necessary,
    • Improve virtual performance evaluations in the field of durability and crash behavior.

    Concept Validation

    Evaluated prototype – Courtesy Chrysler

    Evaluated prototype – Courtesy Chrysler

    Excellent correlation between computed and measured results – Courtesy Chrysler

    Excellent correlation between computed and measured results – Courtesy Chrysler

     

    Making engineers productive – What is available and how does it work:

    • Topology check, cleanup and repair
    • Material cost estimation
    • Die face design next generation based on B-Spline geometry
    • Fast link with simulation
    • Accurate numerical methods
    • Geometrical drawbeads
    • Springback - Kinematic Hardening Model
    • Ironing
    • Triple speed mode for breathtaking short simulation times
    • Precise prediction of wrinkles including folding – no numerical flattening
    • Blank & Trim Line Optimization
    • Springback of High Strength Steel
    • (Multi-operation) compensation
    • Virtual prototyping of the full stamping chain
    • Cosmetic defects
    • Customization
    • High quality results without tradeoffs in cost and time
    • Hot Forming , End-to-End Virtual Prototyping
    • Chaining with manufacturing engineering and assembly prototyping
    • Virtual Reality

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    Page URL:
    https://jp.esi-group.com/software-solutions/virtual-manufacturing/sheet-metal-forming/pam-stamp/chaining-manufacturing-engineering-and-assembly-prototyping
    Permanent link to the page:
    https://jp.esi-group.com/node/2928
    • Virtual Prototyping
      Building the Virtual Prototype Enabling the Factory of the Future Delivering the Hybrid Twin™
    • 製品情報
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