Virtual Prototyping
Verifying the structural integrity of mechanical components is a critical step in the design cycle, particularly for parts that must withstand loads. The concurrent demand for reduced production costs and timelines, while simultaneously improving quality, necessitates the use of advanced design techniques like “Virtual Prototyping.”
Finite Element Models allow for a virtual representation of an object’s structural behavior. This makes it possible to determine, even before manufacturing, whether a part can resist the forces it will encounter in its intended application. The economic and time-saving advantages of this approach are self-evident.
However, caution is essential when using such advanced tools. While the benefits of numerical analysis are significant for a designer exploring various project solutions, it is crucial to maintain strict control over both the input data and the results generated by the software.
This is where the role of the Structural Engineer becomes paramount. This professional is responsible for:
- Implementing the Finite Element Model (building geometry, selecting element types, applying appropriate boundary conditions).
- Evaluating the quality of the numerical calculation.
- Interpreting the results to analyze the structure’s components.
- Validating the model through experimental testing (e.g., using strain gauge techniques).
Needless to say, this role requires deep knowledge of
- Solid Mechanics
- Structural Calculation,
- Numerical Analysis
- and the Finite Element Method theory.
Unfortunately, modern software is often marketed for its ease of use, downplaying the risks associated with its misuse. This can lead to inexperienced users performing analyses based on flawed assumptions (e.g., inadequate mesh, unsuitable element types, unrealistic constraints and loads). The severity of the consequences depends on the application’s field.
It is therefore clear that this critical design phase, especially during final structural checks, must be entrusted exclusively to qualified professionals, whether they are employees, consultants, or collaborators.
